Category Archives: Classroom Content

Building bridges: Medical physiology teaching in China
Ryan Downey, Ph.D.
Assistant Professor
Co-Director, Graduate Physiology Program
Team Leader, Special Master’s Program in Physiology


Department Pharmacology and Physiology
Georgetown University Medical Center
Washington, D.C.

The Chinese Society of Pathophysiology hosted the 2019 Human Functional Experiment Teaching Seminar and the Second Human Physiology Experimental Teaching Training Course 25-27 October. Across two and a half days, educators from across China met at Jinzhou Medical University in the province of Liaoning to discuss and workshop the latest ideas in active learning and interactive teaching techniques. In many ways, especially in terms of the esteem in which this meeting is held by its attendees, this meeting was not dissimilar from the APS Institute on Teaching and Learning, which will hold its next biennial meeting this coming June in Minneapolis. For the 2019 meeting, the organizers decided to invite an international speaker, which is how I found myself on a plane headed to China. As part of my visit, not only did I get to attend the workshop hosted at Jinzhou Medical University, but also I was hosted by several of the meeting organizers at their home institutions to see their facilities. In this writeup, I will reflect on some of the observations that I made during the many different conversations that I had with the educators participating in the meeting.

The most common question that I got from my hosts was, “What kinds of technology do you use in your classrooms and labs and how do you use them?” What surprised me the most about this question wasn’t the actual question itself, but the perception that many of the educators at the meeting held that they were lagging behind in the implementation of using technologies as   teaching and learning tools. The large majority of teaching spaces that I visited were equipped with much the same technology as any classroom or lecture hall that I would find in an American university: computers, projectors, large-screen LCD displays, and power at every seat to accommodate student personal electronic devices. While there was the occasional technological oddity, such as a computer here or there that was still running Windows XP, the technology available to these educators was very much on par with the technology I would expect at any modern university, which is why I was surprised that the educators had the perception that they were behind in implementing different technologies. In my conversations with them, I discussed the use of audience response systems like iClicker and PollEverywhere as well as interactive elements like gamification through websites such as Kahoot!, but my emphasis in these conversations was exactly the same as I have with educators at home: we need to make sure that there is a sound pedagogical basis for any engagement we use with our students and that the technology doesn’t matter. I can use 3×5 colored  index cards to create an audience response system that functions as well as (or sometimes even better!) than clickers because no one has any problems with the WiFi while using a 3×5 card. The technology facilitates our instruction and should never drive it for the sake of itself.

A common thread of many discussions was the use of internet technologies in teaching. While there is much to be said about the limitations of the ‘Great Firewall’ of China and the amount of government regulation that occurs over their communications, it’s important to note how little these limitations affect the day-to-day activities of the majority of citizens. There are Chinese versions of almost every single internet convenience that we would take for granted that function at least as well as our American versions. Their social media system has grown to the point that many international users are engaging on their platforms. There are food delivery apps and the local taxi services have all signed on to a common routing system (at least in Beijing) that functions in a similar way to Uber or Lyft. In a side-by-side comparison between my phone and one of the other meeting participants, there is near feature parity on every aspect. From an educational standpoint, however, there are some notable differences. The lack of access to Wikipedia is a notable gap in a common open resource that many of us take for granted and there is not yet a Chinese equivalent that rivals the scope or depth that Wikipedia currently offers. Another key area in which internet access is limited is their access to scholarly journals. This lack of accessibility is two-fold, both in the access to journals because of restrictions on internet use as well as the common problem that we are already familiar with of journal articles being locked behind paywalls. The increasing move of journals to open access will remove some of these barriers to scholarly publications, but there are still many limits on the number and types of journal articles that educators and learners are allowed through Chinese internet systems.

The most common request that I received while attending the educators meeting was, “Tell me about the laboratories you use to teach physiology to your medical students.” I think this is the largest difference in teaching philosophy that I observed while in China. The teaching of physiology is heavily based on the use of animal models, where students are still conducting nerve conduction experiments with frogs, autonomic reflex modules with rabbits, and pharmacological studies in rats. These are all classic experiments that many of us would recognize, but that we rarely use anymore. One key area of the workshops were modules designed to replace some of these classic animal experiments with non-invasive human-based modules, such as measuring nerve conduction velocities using EMG. My response that the majority of our physiology teaching is now done through lecture only was met with a certain degree of skepticism from many of them because the use of labs is so prevalent throughout the entire country. Indeed, the dedication of resources such as integrated animal surgical stations runs well into the hundreds of thousands of dollars per laboratory room set up, and to facilitate the entirety of students each year, there are multiple labs set up at each university. As the use of non-invasive human experiments expands, an equal amount of space and resources are being given to setting up new learning spaces with data acquisition systems and computers for this new task. In this area, I think that we have much to gain from our Chinese counterparts as many of the hardest concepts in physiology are more easily elucidated by giving students the space to self-discover in the lab while making physiological measurements to fully master ideas like ECG waves and action potential conduction.

Upon returning home, I have been asked by nearly everyone about my travel experiences, so I think it may be worth a brief mention here as well. I cannot overstate the importance of having a good VPN service setup on all of your electronic devices before traveling. Using a VPN, I had near-normal use of the internet, including Google and social media. My largest problem was actually trying to access local Chinese websites when my internet address looked like I was outside of the country. I have had good experience with NordVPN, but there are several other very good options for VPN service. Carrying toilet paper is a must. There are lots of public restrooms available everywhere in the city, but toilet paper is either not provided or available only using either social media check-ins or mobile payments. For drinking water, I traveled with both a Lifestraw bottle and a Grayl bottle. This gave me options for using local water sources and not having to rely on bottled water. The Lifestraw is far easier to use, but the Grayl bottle has a broader spectrum of things that are filtered out of the water, including viruses and heavy metals, which may be important depending on how far off the tourist track you get while traveling. My final tip is to download the language library for a translator app on your mobile device for offline use so that you can communicate with others on the streets. When interacting with vendors and others not fluent in English, it was common to use an app like Google Translate to type on my device, show them the translated results, and they would do the same in reverse from their mobile device.

One of the themes across the meeting was building bridges — bridges between educators, bridges between universities, bridges across the nation and internationally. I’m glad to have had the opportunity to participate in their meeting and contribute to their conversation on building interactive engagement and human-focused concepts into the teaching of physiology. Overall, the time that I spent talking to other educators was useful and fantastic. Everyone I met and interacted with is enthusiastic and excited about continuing to improve their teaching of physiology. I left the meeting with the same renewed energy that I often feel after returning from our ITL, ready to reinvest in my own teaching here at home.

Ryan Downey is an Assistant Professor in the Department of Pharmacology & Physiology at Georgetown University. As part of those duties, he is the Co-Director for the Master of Science in Physiology and a Team Leader for the Special Master’s Program in Physiology. He teaches cardiovascular and neuroscience in the graduate physiology courses. He received his Ph.D. in Integrative Biology from UT Southwestern Medical Center. His research interests are in the sympathetic control of cardiovascular function during exercise and in improving science pedagogy. When he’s not working, he is a certified scuba instructor and participates in triathlons

The Benefits of Learner-Centered Teaching

Jaclyn E. Welles
Cell & Molecular Physiology PhD Candidate
Pennsylvania State University – College of Medicine

In the US, Students at Still Facing Struggles in the STEMs

Literacy in the World Today:
According to the United Nations Educational, Scientific, and Cultural Organization (UNESCO), there are approximately 250 million individuals worldwide, who cannot read, write, or do basic math, despite having been in school for a number of years (5, 8). In fact, UNESCO, is calling this unfortunate situation a “Global Learning Crisis” (7). The fact that a significant number of people are lacking in these fundamental life skills regardless of attending school, shows that part of the problem lies within how students are being taught.

Two Main Styles of Teaching – Learner or Teacher-Centered

Learning and Teaching Styles:
It was due to an early exposure to various education systems that I was able to learn of that there were two main styles of teaching – Learner-centered teaching, and Teacher-centered teaching (2). Even more fascinating, with the different styles of teaching, it has become very clear that there are also various types of learners in any given classroom or lecture setting (2, 6, 10). Surprisingly however, despite the fact that many learners had their own learning “modularity” or learning-style, instructors oftentimes taught their students in a fixed-manner, unwilling or unable to adapt or implement changes to their curriculum. In fact, learner-centered teaching models such as the “VARK/VAK – Visual Learners, Auditory Learners and Kinesthetic Learners”, model by Fleming and Mills created in 1992 (6), was primarily established due to the emerging evidence that learners were versatile in nature.

VARK Model of Learners Consists of Four Main Types of Learners: Visual, Auditory, Reading and Writing, and Tactile/Kinesthetic (touch)

What We Can Do to Improve Learning:
The fundamental truth is that when a student is unable to get what they need to learn efficiently, factors such as “learning curves” – which may actually be skewing the evidence that students are struggling to learn the content, need to be implemented (1, 3). Instead of masking student learning difficulties with curves and extra-credit, we can take a few simple steps during lesson-planning, or prior to teaching new content, to gauge what methods will result in the best natural overall retention and comprehension by students (4, 9). Some of methods with evidence include (2, 9):

  • Concept Maps – Students Breakdown the Structure or Organization of a Concept
  • Concept Inventories – Short Answer Questions Specific to a Concept
  • Self-Assessments – Short Answer/Multiple Choice Questions
  • Inquiry-Based Projects – Students Investigate Concept in a Hands-On Project

All in all, by combining both previously established teaching methodologies with some of these newer, simple methods of gauging your students’ baseline knowledge and making the necessary adjustments to teaching methods to fit the needs of a given student population or class, you may find that a significant portion of the difficulties that can occur with students and learning such as – poor comprehension, retention, and engagement, can be eliminated (4, 9) .

Jaclyn Welles is a PhD student in Cellular and Molecular Physiology at the Pennsylvania State University – College of Medicine. She has received many awards and accolades on her work so far promoting outreach in science and education, including the 2019 Student Educator Award from PSCoM.

Her thesis work in the lab of Scot Kimball, focuses on liver physiology and nutrition; mainly how nutrients in our diet, can play a role in influencing mRNA translation in the liver. 

Student Evaluation of Teaching – The Next 100 Years

Mari K. Hopper, PhD
Sam Houston State University

Student evaluation of teaching (SET) has been utilized and studied for over 100 years. Originally, SET was designed by faculty to gather information from students in order to improve personal teaching methods (Remmers and Guthrie, 1927). Over time, SET became increasingly common. Reports in the literature indicate 29% of institutions of higher education employed this resource in 1973, 68% in 1983,  86% in 1993, and 94.2% in 2010 (Seldin, 1993).

Today, SET is employed almost universally, and has become a routine task for both faculty and students. While deployment of this instrument has increased, impact with faculty has declined. A study published in 2002 indicated only 2-10% of instructors reported major teaching changes based on SET (Nasser & Fresko, 2002). However, results of SET has become increasingly important in making impactful faculty decisions including promotion and tenure, merit pay, and awards. A study by Miller and Seldin (2010), reported that 99.3% Deans use SET in evaluating their faculty (Miller & Seldin, 2014)

The literature offers a rich discussion of issues related to SET including bias, validity, reliability, and accuracy. Although discussions raise concern for current use of SET, institutions continue to rely on SET for multiple purposes. As a consequence, it has become increasingly important that students offer feedback that is informative, actionable, and professional. It would also be helpful to raise student awareness of the scope, implications, and potential impact of SET results. 

To that end, I offer the following suggestions for helping students become motivated and effective evaluators of faculty:

  • Inform students of changes made based on evaluations from last semester/year
  • Share information concerning potential bias (age, primary language, perception of grading leniency, etc.)
  • Inform of full use including departmental and campus wide (administrative decisions, awards, P & T, etc,)
  • Establish a standard of faculty performance for each rating on the Likert scale (in some cases a 3 may be the more desirable indicator)
  • Inform students of professionalism, and the development of professional identity. Ask students to write only what they would share in face-to-face conversation.
  • Ask students to exercise caution and discrimination – avoid discussing factors out of faculty control (class size, time offered, required exams, classroom setting, etc.)
  • If indicating a faculty behavior is unsatisfactory – offer specific reasons
  • When writing that a faculty member display positive attributes – be sure to include written comments of factual items, not just perceptions and personal feelings
  • Give students examples of USEFUL and NOT USEFUL feedback
  • Distinguish between ‘anonymous’ and ‘blinded’ based on your school’s policy

Although technology has made the administration of SET nearly invisible to faculty, it is perhaps time for faculty to re-connect with the original purpose. It is also appropriate for faculty to be involved in the process of developing SET instruments, and screening questions posed to their students. Additionally, it is our responsibility to help students develop proficiency in offering effective evaluation. Faculty have the opportunity, and perhaps a responsibility, to determine the usefulness and impact of SET for the next 100 years.

Please share your ideas about how we might return to the original purpose of SET – to inform our teaching. I would also encourage you to share instructions you give your students just prior to administering SET. 

Mari K. Hopper, PhD, is currently the Associate Dean for Biomedical Sciences at Sam Houston State University Proposed College of Osteopathic Medicine. She received her Ph.D. in Physiology from Kansas State University. She was trained as a physiologist with special interest in maximum capabilities of the cardiorespiratory and muscular systems. Throughout her academic career she has found immense gratification in working with students in the classroom, the research laboratory, and in community service positions. Dr Hopper has consistently used the scholarly approach in her teaching, and earned tenure and multiple awards as a result of her contributions in the area of scholarship of teaching and learning. She has focused on curriculum development and creating curricular materials that challenge adult learners while engaging students to evaluate, synthesize, and apply difficult concepts. At SHSU she will lead the development of the basic science curriculum for the first two years of medical school. Dr Hopper is very active in professional organizations and currently serves as the Chapter Advisory Council Chair for the American Physiological Society, the HAPS Conference Site Selection Committee, and Past-President of the Indiana Physiological Society. Dr Hopper has four grown children and a husband David who is a research scientist.

Fostering an Inclusive Classroom: A Practical Guide

Ah, the summer season has begun! I love this time of year, yes for the sun and the beach and baseball games and long, lazy summer reading, but also because it gets me thinking about new beginnings. I’ve always operated on a school-year calendar mindset, so if you’re like me, you’re probably reflecting on the successes and shortcomings of the past year, preparing for the upcoming fall semester, or maybe even launching into a new summer semester now. As campuses become more diverse, fostering an inclusive learning environment becomes increasingly important, yet the prospect of how to do so can be daunting. So where to start?

First, recognize that there is not just one way to create an inclusive classroom. Often, the most effective tactics you use may be discipline-, regional-, campus-, or classroom-specific. Inclusive teaching is a student-oriented mindset, a way of thinking that challenges you to maximize opportunities for all students to connect with you, the course material, and each other.

Second, being proactive before a semester begins can save you a lot of time, headaches, and conflict down the road. Set aside some dedicated time to critically evaluate your course structure, curriculum, assignments, and language choices before ever interacting with your students. Consider which voices, perspectives, and examples are prominent in your class materials, and ask yourself which ones are missing and why. Try to diversify the mode of content representation (lectures, videos, readings, discussions, hands-on activities, etc.) and/or assessments types (verbal vs. diagrammed, written vs. spoken, group vs. individual, online vs. in-class, etc.). Recognize the limits of your own culture-bound assumptions, and, if possible, ask for feedback from a colleague whose background differs from your own.

Third, know that you don’t have to change everything all at once. If you are developing an entirely new course/preparation, you’ll have less time to commit to these endeavors than you might for a course you’ve taught a few times already. Recognize that incremental steps in the right direction are better than completely overwhelming yourself and your students to the point of ineffectiveness (Trust me, I’ve tried and it isn’t pretty!)

Below, I have included some practical ways to make a classroom more inclusive, but this list is far from comprehensive. As always, feedback is much appreciated!

Part 1: Course Structure and Student Feedback

These strategies require the largest time commitment to design and implement, but they are well worth the effort.

  • Provide opportunities for collaborative learning in the classroom. Active learning activities can better engage diverse students, and this promotes inclusivity by allowing students from diverse backgrounds to interact with one another. Furthermore, heterogeneous groups are usually better problem-solvers than homogeneous ones.
  • Implement a variety of learning activity types in order to reach different kinds of learners. Use poll questions, case studies, think-pair-share, jigsaws, hands-on activities, oral and written assignments, etc.
  • Select texts/readings whose language is gender-neutral or stereotype-free, and if you run across a problem after the fact, point out the text’s shortcomings in class and give students the opportunity to discuss it.
  • Promote a growth mindset. The language you use in the classroom can have a surprising impact on student success, even when you try to be encouraging. How many of us have said to our students before a test, “You all are so smart. I know you can do this!”? It sounds innocent enough, but this language conveys that “being smart” determines success rather than hard work. Students with this fixed mindset are more likely to give up when confronted with a challenge because they don’t think they are smart/good/talented enough to succeed. Therefore, when we encourage our students before an assessment or give them feedback afterwards, we must always address their effort and their work, rather than assigning attributes (positive or negative) to them as people.
  • Convey the same level of confidence in the abilities of all your students. Set high expectations that you believe all students can achieve, emphasizing the importance of hard work and effort. Perhaps the biggest challenge is maintaining high expectations for every student, even those who have performed poorly in the past. However, assuming a student just can’t cut it based on one low exam grade may be as damaging as assuming a student isn’t fit due to their race, gender, background, etc.
  • Be evenhanded in praising your students. Don’t go overboard as it makes students feel like you don’t expect it of them.

Part 2: Combating Implicit Bias

Every one of us harbors biases, including implicit biases that form outside of our conscious awareness. In some cases, our implicit biases may even run counter to our conscious values. This matters in the classroom because implicit bias can trigger self-fulfilling prophecies by changing stereotyped groups’ behaviors to conform to stereotypes, even when the stereotype was initially untrue. Attempting to suppress our biases is likely to be counterproductive, so we must employ other strategies to ensure fairness to all our students.

  • Become aware of your own biases, by assessing them with tools like the Harvard Implicit Association Test (https://implicit.harvard.edu/implicit/takeatest.html) or by self-reflection. Ask yourself: Do I interact with men and women in ways that create double standards? Do I assume that members of one group will need extra help in the classroom – or alternatively, that they will outperform others? Do I undervalue comments made by individuals with a different accent than my own?
  • Learn about cultures different than your own. Read authors with diverse backgrounds. Express a genuine interest in other cultural traditions. Exposure to different groups increases your empathy towards them.
  • Take extra care to evaluate students on individual bases rather than social categorization / group membership. Issues related to group identity may be especially enhanced on college campuses because this is often the first time for students to affirm their identity and/or join single-identity organizations / groups.
  • Recognize the complexity of diversity. No person has just one identity. We all belong to multiple groups, and differences within groups may be as great as those across groups.
  • Promote interactions in the classroom between different social groups. Even if you choose to let students form their own groups in class, mix it up with jigsaw activities, for example.
  • Use counter-stereotypic examples in your lectures, case studies, and exams.
  • Employ fair grading practices, such as clearly-defined rubrics, anonymous grading, grading question by question instead of student by student, and utilize activities with some group points and some individual points.

Part 3: Day-to-Day Classroom Culture

These suggestions fall under the “biggest bang for your buck” category. They don’t require much time to implement, but they can go a long way to making your students feel more welcome in your classroom.

  • Use diverse images, names, examples, analogies, perspectives, and cultural references in your teaching. Keep this in mind when you choose pictures/cartoons for your lectures, prepare in-class or take-home activities, and write quiz/test questions. Ask yourself if the examples you are using are only familiar or relevant to someone with your background. If so, challenge yourself to make it accessible to a wider audience.
  • Pay attention to your terminology and be willing to adjust based on new information. This may be country-, region-, or campus-specific, and it may change over time (e.g. “minority” vs. “historically underrepresented”). When in doubt, be more specific rather than less (e.g. “Korean” instead of “Asian”; “Navajo” instead of “Native American”).
  • Use inclusive and non-gendered language whenever possible (e.g. “significant other/partner” instead of “boyfriend/husband,” “chairperson” instead of “chairman,” “parenting” instead of “mothering”).
  • Make a concerted effort to learn your students’ names AND pronunciations. Even if it takes you a few tries, it is a meaningful way to show your students you care about them as individuals.
  • Highlight the important historical and current contributions to your field made by scientists belonging to underrepresented groups.
  • Limit barriers to learning. You will likely have a list of your own, but here are a few I’ve compiled:
    • Provide lecture materials before class so that students can take notes on them during class.
    • Use a microphone to make sure all students can hear you clearly.
    • Consider using Dyslexie font on your slides to make it easier for dyslexic students to read them.
    • Speak slowly and limit your use of contractions so that non-native-English speakers can understand you more easily.
    • Write bullet points on the board that remain there for the whole class period, including the main points for that lecture, important dates coming up, and key assignments.
    • Be sensitive to students whose first language is not English and don’t punish them unnecessarily for misusing idioms.

As a final parting message, always try to be mindful of your students’ needs, but know that you don’t have everything figured out at the outset. Make time to reevaluate your approach, class materials, and activities to see where improvements can be made. Challenge yourself to continually improve and hone better practices. Listen to your students, and be mindful with the feedback you ask them to give you in mid-semester and/or course evaluations.

For more information, I recommend the following resources:

  1. Davis, BG. “Diversity and Inclusion in the Classroom.” Tools for Teaching (2nd Ed). San Francisco: Jossey-Bass, A Wiley Imprint. p 57 – 71. Print.
  2. Eredics, Nicole. “16 Inclusive Education Blogs You Need to Know About!” The Inclusive Class, 2016 July 27. http://www.theinclusiveclass.com/2016/07/16-inclusive-education-blogs-you-need.html
  3. Handelsman J, Miller S, Pfund C. “Diversity.” Scientific Teaching. New York: W. H. Freeman and Company, 2007. p 65 – 82. Print.
  4. “Instructional Strategies: Inclusive Teaching and Learning.” The University of Texas at Austin Faculty Innovation Center. https://facultyinnovate.utexas.edu/inclusive

Laura Weise Cross is an Assistant Professor of Biology at Millersville University, beginning in the fall of 2019, where she will be teaching courses in Introductory Biology, Anatomy & Physiology, and Nutrition. Laura received a B.S. in Biochemistry from the University of Texas and a Ph.D. in Molecular and Cellular Pathology from the University of North Carolina. She recently completed her post-doctoral training in the Department of Cell Biology & Physiology at the University of New Mexico, where she studied the molecular mechanisms of hypoxia-induced pulmonary hypertension. Laura’s research is especially focused on how hypoxia leads to structural remodeling of the pulmonary vessel wall, which is characterized by excessive vascular smooth muscle cell proliferation and migration. She looks forward to engaging undergraduate students in these projects in her new research lab.

Do You Want To Be On TV?

Last summer, some colleagues and I published a paper on how high school students can communicate their understanding of science through songwriting.  This gradually led to a press release from my home institution, and then (months later) a feature article in a local newspaper, and then appearances on Seattle TV stations KING-5 and KOMO-4.

It’s been an interesting little journey.  I haven’t exactly “gone viral” — I haven’t been adding hundreds of new Twitter followers, or anything like that — but even this mild uptick in interest has prompted me to ponder my relationship with the news media. In short, I do enjoy the attention, but I also feel some responsibility to influence the tone and emphases of these stories. In this post, I share a few bits of advice based on my recent experiences, and I invite others to contribute their own tips in the comments section.

(1) Find out how your school/department/committee views media appearances.  In April, I was invited to appear on KING’s mid-morning talk show, which sounded cool, except that the show would be taped during my normal Thursday physiology lecture!  My department chair and my dean encouraged me to do the show, noting that this sort of media exposure is generally good for the school, and so, with their blessing, I got a sub and headed for the studio.

(2) Respect students’ privacy during classroom visits.  After some students were included in a classroom-visit video despite promises to the contrary, I realized that I needed to protect their privacy more strongly. I subsequently established an option by which any camera-shy students could live-stream the lecture until the TV crew left.

(3) Anticipate and explicitly address potential misconceptions about what you’re doing.  I’ve worried that these “singing professor” pieces might portray the students simply as amused audience members rather than as active participants, so, during the classroom visits, I’ve used songs that are conducive to the students singing along and/or analyzing the meaning of the lyrics. (Well, mostly. “Cross-Bridges Over Troubled Water” wasn’t that great for either, but I had already sung “Myofibrils” for KING, and KOMO deserved an exclusive too, right?)

(4) Take advantage of your institution’s public relations expertise.  Everett Community College’s director of public relations offered to help me rehearse for the talk show — and boy am I glad that she did!  Being familiar with the conventions and expectations of TV conversations, Katherine helped me talk much more pithily than I normally do. In taking multiple cracks at her practice question about “how did you get started [using music in teaching]?” I eventually pared a meandering 90-second draft answer down to 30 seconds. She also asked me a practice question to which my normal response would be, “Can you clarify what you mean by X?” — and convinced me that in a 4-minute TV conversation, you don’t ask for clarifications, you just make reasonable assumptions and plow ahead with your answers.

(5) Ask your interviewers what they will want to talk about. Like a novice debater, I struggle with extemporaneous speaking; the more I can prepare for specific questions, the better.  Fortunately, my interviewers have been happy to give me a heads-up about possible questions, thus increasing their chances of getting compelling and focused answers.

Readers, what other advice would you add to the above?

Gregory J. Crowther, PhD has a BA in Biology from Williams College, a MA in Science Education from Western Governors University, and a PhD in Physiology & Biophysics from the University of Washington. He teaches anatomy and physiology in the Department of Life Sciences at Everett Community College. His peer-reviewed journal articles on enhancing learning with content-rich music have collectively been cited over 100 times.

An inventory of meaningful lives of discovery

by Jessica M. Ibarra

I always had this curiosity about life. Since the very beginning, always wanting to understand how animals’ breathe, how they live, how they move. All that was living was very interesting. – Dr. Ibarra

“I always had this curiosity about life and I wanted to become a doctor, but my parent told me it was not a good idea,” Lise Bankir explained in her interview for the Living History Project of the American Physiological Society (APS).  The video interview (video length: 37.14 min.) is part of a rich collection over 100 senior members of the APS who have made outstanding contributions to the science of physiology and the profession. 

The archive gives us great insight into how these scientists chose their fields of study.  As Dr. Bankir, an accomplished renal physiologist, explain how she ended up “studying the consequences of vasopressin on the kidney.”  She describes her work in a 1984 paper realizing “high protein was deleterious for the kidney, because it induces hyperfiltration,” which of course now we accept that high protein accelerates the progression of kidney disease. Later she describes her Aha! moment, linking a high protein diet to urea concentration, while on holiday. 

“It came to my mind that this adverse effect of high protein diet was due to the fact that the kidney not only to excrete urea (which is the end product of proteins), but also to concentrate urea in the urine.  Because the plasma level of urea is already really low and the daily load of urea that humans excrete need that urea be concentrated about 100-fold (in the urine with respect to plasma).” 

Other interviews highlight how far ahead of their time other scientists were.  As is the case when it comes to being way ahead of teaching innovations and active learning in physiology with  Dr. Beverly Bishop.  In her video interview, you can take inspiration from her 50 years of teaching neurophysiology to physical therapy and dental students at SUNY in New York (video length: 1 hr. 06.09 min.).  Learn about how she met her husband, how she started her career, and her time in Scotland.  Dr. Bishop believed students could learn better with experimental laboratory activities and years ahead of YouTube, she developed a series of “Illustrated Lectures in Neurophysiology” available through APS to help faculty worldwide.

She was even way ahead of others in the field of neurophysiology.  Dr. Bishop explains, “everyone knows that they (expiratory muscles) are not very active when you are sitting around breathing quietly, and yet the minute you have to increase ventilation (for whatever reason), the abdominal muscles have to play a part to have active expiration.  So, the question I had to answer was, “How are those muscles smart enough to know enough to turn on?” Her work led to ground breaking work in neural control of the respiratory muscles, neural plasticity, jaw movements, and masticatory muscle activity.

Another interview shed light on a successful career of discovery and their implications to understanding disease, as is the case with the video interview of Dr. Judith S. Bond. She describes the discovery of meprins proteases as her most significant contribution to science (video length: 37.38 min.), “and as you know, both in terms of kidney disease and intestinal disease, we have found very specific functions of the protease.  And uh, one of the functions, in terms of the intestinal disease relates to uh inflammatory bowel disease.  One of the subunits, meprin, alpha subunit, is a candidate gene for IBD and particularly ulcerative colitis. And so that opens up a window to – that might have significance to the treatment of ulcerative colitis.”

Or perhaps you may want to know about the life and research of Dr. Bodil Schmidt-Nielsen, the first woman president of the APS (video length: 1 hr. 18.07 min.) and daughter of August and Marie Krogh.  In her interview, she describes her transition from dentistry to field work to study water balance on desert animals and how she took her family in a van to the Arizona desert and while pregnant developed a desert laboratory and measured water loss in kangaroo rats.  Dr. Schmidt-Nielsen was attracted to the early discoveries she made in desert animals, namely that these animals had specific adaptations to reduce their expenditure of water to an absolute minimum to survive. 

The Living History Project managed to secure video interviews with so many outstanding contributors to physiology including John B. West, Francois Abboud, Charles TiptonBarbara Horwitz, Lois Jane Heller, and L. Gabriel Navar to name a few.  For years to come, the archive provides the opportunity to learn from their collective wisdom, discoveries, family influences, career paths, and entries into science. 

As the 15th anniversary of the project approaches, we celebrate the life, contributions, dedication, ingenuity, and passion for science shared by this distinguished group of physiologists.  It is my hope you find inspiration, renewed interest, and feed your curiosity for science by taking the time to watch a few of these video interviews. 

Dr. Jessica M. Ibarra is an Assistant Professor of Physiology at Dell Medical School in the Department of Medical Education of The University of Texas at Austin.  She teaches physiology to first year medical students.  She earned her B.S. in Biology from the University of Texas at San Antonio.  Subsequently, she pursued her Ph.D. studies at the University of Texas Health Science Center in San Antonio where she also completed a postdoctoral fellowship.  Her research studies explored cardiac extracellular matrix remodeling and inflammatory factors involved in chronic diseases such as arthritis and diabetes.  When she is not teaching, she inspires students to be curious about science during Physiology Understanding Week in the hopes of inspiring the next generation of scientists and physicians. Dr. Ibarra is a native of San Antonio and is married to Armando Ibarra.  Together they are the proud parents of three adult children – Ryan, Brianna, and Christian Ibarra.

Engaging students in active learning via protocol development

Physiology, particularly metabolic physiology, covers the fundamentals of biophysics and biochemistry for nutrient absorption, transport, and metabolism. Engaging pre-health students in experimentation may facilitate students’ learning and their in-depth understanding of the mechanisms coordinating homeostatic control. In addition, it may promote critical thinking and problem-solving ability if students are engaged in active learning.

Traditionally, students are provided instructions that detail the stepwise procedures before an experiment or demonstration. Although students are encouraged to ask questions before and during the experiments, an in-depth discussion would not be possible until they understand each step and the underlying principles. This is particularly true nowadays when commercial kits come with stepwise instructions where no explanation can be found of principles behind the procedure. The outcomes may contrast in three ways: (1) students are happy with the perfect data they acquire by following the instructions provided by the manufacturer, but they miss the opportunity to chew on the key principles that are critical for students to develop creative thinking; (2) students are frustrated as they follow the instruction but fail the experiments, without knowing what is wrong and where to start for trouble shooting; and (3) driven by self-motivation, students dig into the details and interact intensively with the instructor to grasp the principles of the procedure. As such, the students can produce reliable data and interpret the procedure and data with confidence, and in addition, they may effectively diagnose operational errors for trouble shooting. Evidently, the 3rd scenario demonstrates an example of active learning, which is desirable but not common in a traditional model of experimentation.

To engage students in active learning, one of the strategies is to remove the ready-to-go procedure from the curricular setting but request the students to submit a working protocol of their own version at the end of an experiment. Instead of a stepwise procedure (i.e., a “recipe”), the students are provided with reading materials that discuss the key principles of the analytical procedures. When students show the competency in the understanding of the principles in a formative assessment (e.g., a 30-min quiz), they are ready to observe the demonstrations step by step, taking notes and asking questions. Based on their notes and inspiration from discussion, each student is requested to develop a protocol of their own version. Depending on how detail-oriented the protocols are, the instructor may approve it or ask students to recall the details and revise their protocols before moving forward. Once students show competency in the protocol development, they are ready to conduct the steps in groups under the instructor’s (or teaching assistant, TA’s) supervision. Assessment on precision and accuracy is the key to examine the competency of students’ operation, which also provides opportunities for students to go back to improve or update their protocols. In the case of unexpected results, the students are encouraged to interpret and justify their results in a physiological setting (e.g., fasting vs. feeding states) unless they choose not to. Regardless, students are asked to go back to recall and review their operation for trouble shooting under the instructor’s (or TA’s) supervision, till they show competency in the experiment with reproducible and biologically meaningful data. Trouble shooting under instructor’s or TA’s supervision and inspiration serves as an efficient platform for students to take the lead in critical thinking and problem solving, which prompts students to go back to improve or update their protocols showing special and practical notes about potential pitfalls and success tips.

Often with delight, students realize how much they have grown at the end of experimentation. However, frustration is not uncommon during the troubleshooting and learning, which has to be overcome through students’ persistence and instructor’s encouragement. Some students might feel like “jumping off a cliff” in the early stage of an experiment where a ready-to follow instruction is not available. Growing in experience and persistence, they become more confident and open to pursue “why” in addition to “what”.

Of note, logistic consideration is critical to ensure active learning by this strategy. A single experiment would take up to 3-fold more time for the instructor and students to work together to reach competency. To this end, the instructor needs to reduce the number of experiments for a semester, and carefully select and design the key experiments to maximally benefit students in terms of skill learning, critical thinking, and problem solving. Furthermore, group size should be kept small (e.g., less than 3 students per group) to maximize interactive learning if independent experimentation by individuals is not an option. Such a requirement can be met either by increasing TA support or reducing class size.

 

 

Zhiyong Cheng is an Assistant Professor of Nutritional Science at the Food Science and Human Nutrition Department, University of Florida’s Institute of Food and Agricultural Sciences (UF/IFAS). Dr. Cheng received his PhD in Analytical Biochemistry from Peking University. After completing his postdoctoral training at the University of Michigan (Ann Arbor) and Harvard Medical School, Dr. Cheng joined Virginia Tech as a faculty member, and recently he relocated to the University of Florida. Dr. Cheng has taught Nutrition and Metabolism, with a focus on substrate absorption, transport, and metabolism. As the principal investigator in a research lab studying metabolic diseases (obesity and type 2 diabetes), Dr. Cheng has been actively participating in undergraduate and graduate research training.
The Large Lecture: Minor Adjustments, Major Impacts

Large lecture courses are hard, for both students and faculty alike, and while an exhaustive body of Scholarship of Teaching & Learning (SOTL) research boasts benefits of smaller classes (Cuseo, 2007), budgetary and a myriad of other restrictions leave many higher education institutions with few options for reducing class sizes.  Accordingly, many instructors are forced to figure out a way to best serve our students in this unideal setting.

Three years ago, in my first year as a full time faculty member, I found myself teaching one of these large lecture classes.  There were ~250 students, split across two sections, piled into an outdated auditorium.   The setting was intimidating for me, and if one thing was certain, it was that however intimidated I felt, my students felt it even harder (and as an aside, three years later, I still find myself, at times, intimidated by this space).  So, in a high-stakes, pre-requisite course like Anatomy & Physiology that is content-heavy and, by nature, inherently intense, what can be done in a large lecture hall to ease the tension and improve student learning?

When looking to the SOTL research for evidence-based recommendations on student engagement and active learning ideas in high-enrollment courses such as mine, I quickly became overwhelmed with possibilities (not unlike a kid in a candy store).  Before I knew it, finding meaningful ways to reshape my class in the best interest of the student became defeating – how was I supposed to overhaul my course to integrate best-practice pedagogy while still juggling the rest of my faculty responsibilities?

Thankfully, last year a colleague introduced me to a book, Small Teaching: Everyday Lessons from the Science of Learning, by James Lang.  Admittedly – I still have not finished this book (rest assured – I am currently in a book club studying this book, so I WILL finish it!); that being said, Lang’s powerful message about the significance of small changes resonated with me pretty early on in the text.  Minor, thoughtful adjustments to the daily classroom routine are capable of eliciting substantial impacts on student learning.  In other words, I did not need to reinvent the wheel to better serve my students; instead, I set a goal for myself to try out one or two small, reasonable adjustments per semester.  While I am still navigating best-practice teaching and experience a healthy dose of trial-and-error, here is what I have found useful thus far:

 

1. Learning names. This is perhaps the most straightforward, obvious classroom goal, but when you have a large number of students, something as simple as learning student names can quickly slip through the cracks.  Now, I appreciate that implementing this goal takes considerable time and intention, and depending on the structure of your high-enrollment course, it may or may not be feasible.  In my course, for example, it is a two-part series, which means I have the same students for an entire academic year rather than one semester.  Moreover, in addition to lecture, I have all of my students in smaller lab sections.  Accordingly, I have plenty of opportunity to interact with students and pay attention to names.

From a purely anecdotal observation, if and when a student musters up the courage to ask a question in the large auditorium, addressing them by name appears to increase the likelihood of the student asking again.  Moreover, it seems to have an impact on other students in the classroom, too; anecdotally, I have noticed in lectures where I address student questions using student names, the number of different students asking questions appears to increase.  Overall, addressing students by name seems to communicate a message that students in our classrooms are not simply a body in a seat or a number in the system, but they are a member of a learning community.

2. Finding an inclusive platform for voicing questions. Despite reaching a point in the academic year where everyone knows each other by name, some students will never feel comfortable enough raising their hand to ask questions in the big lecture hall. Knowing this, along with the notion that student confusion rarely exist in isolation, this semester I made it a point to explore alternative platforms for asking questions during lecture.  Cue in the Google Doc: this handy, online word-processing tool gave me a platform for monitoring student questions in real time during lecture.  On the logistical end, it is worth noting that I have a TA monitoring our Google Doc during lecture, so that when a stream of questions comes through, common themes in questions are consolidated into one or two questions.  A few times during the lecture, I will check in with our TA and address questions.  It is also worth mentioning that the document has been set up such that student names are linked to their comments; this was implemented as a measure to keep comments appropriate and on track.  So far, this has turned out to be a great platform, not only for students asking lecture questions in real time, but also for facilitating some really great discussion amongst students.

 

3. Holding students accountable for in-class activities.  I quickly realized in my large lecture class that students were generally unmotivated to participate in any in-class activity unless I collected it and assigned points (which, by the way, can be a logistical nightmare with 250 students).  Yet, as I learned in Making it Stick: The Successful Science of Learning, by Brown, Roediger, and McDaniel (a previous book club endeavor of mine), engaging students in activities like 5 minute recall exercises is widely supported as an effective tool for long-term learning and retention.  So, I decided to piggy back off my previous idea of the Q&A Google Doc, and open up an entire classroom folder where, in addition to our Q&A doc, students had daily folders for submitting in-class activities (again, in real time).  As of now, the way that it works is as follows: upon completing the short recall exercise, or other in-class activity, students will snap a photo of their work and upload it to our Google drive.  Then, I choose a piece of student work to display as we review the activity prompt, which has proven to be a great method for maintaining student accountability (I disclosed to the students that I will randomly choose a few days in the semester to award extra credit for those who submitted during class).  Additionally, this provides quick feedback to me (in real time) regarding student comprehension and common misunderstandings; in fact, I will occasionally choose to review a student submission that represents a common mistake to highlight and address a common problem area.

In summary, implementing these small changes has offered realistic approaches to improving my students’ experience and creating community in an otherwise challenging setting: the large lecture.  While I retain other long-term teaching goals that require more of a time commitment, Lang’s sentiment that small ≠ insignificant provides a solid ground for improvement in the present.

References:

Brown, PC, Roediger, HL, and McDaniel, MA (2014). Making it Stick: The Successful Science of Learning.  Cambridge, MA: Harvard University Press.

Cuseo, Joe. (2007). The empirical case against large class size: Adverse effects on the teaching, learning, and retention of first-year students. Journal of Faculty Development: 21.

Lang, James (2016).  Small Teaching: Everyday Lessons from the Science of Learning. San Francisco, CA: Jossey-Bass.

 

Amber Schlater earned her B.S. from the University of Pittsburgh in Biological Sciences, and her M.S. and Ph.D. from Colorado State University in Zoology; she also completed a two-year post-doctoral fellowship at McMaster University.  Currently, Amber is an Assistant Professor in the Biology Department at The College of Saint Scholastica in beautiful Duluth, MN, where she teaches Human Anatomy & Physiology, Super Physiology (a comparative physiology course), and mentors undergraduate research students.  Outside of work, Amber enjoys hiking, biking, camping, canoeing, and doing just about anything she can outside with her family.
It was Just a Bag of Candy, but Now It’s a Lung – Don’t Be Afraid to Improvise When Teaching Physiology

Many of us have been teaching the same course or the same topic in a team-taught course for many years.  I have been teaching the undergraduate Anatomy and Physiology-II (AP-II) course at a community college for four years.  People often ask, “Doesn’t it get old?  Don’t you get bored, teaching the same topic?”  Without hesitation, I answer, “No.” Why?  First, on-going research continually brings new details and insight to nearly every aspect of cell and integrative physiology.  You’re always learning to keep up with the field and modifying lectures to incorporate new concepts.  Second, you truly want your students to learn and enjoy learning and continually seek out ways to teach more effectively.  You try new approaches to improve student learning.  However, the third reason is truly why teaching physiology will never get old or dull.  No two students and no two classes are alike; individual and collective personalities, career goals, academic backgrounds and preparedness, and learning curves vary from class to class.  About half my students have not taken the general biology or chemistry courses typically required for AP-I or AP-II (these are not required by the college).  The unique combination of characteristics in each group of students means that on any given day I will need to create a new makeshift model or a new analogy for a physiological mechanism or structure-function relationship to help students learn.  Thus, even if all physiological research came to complete fruition, the teaching of physiology would still be challenging, interesting, and entertaining.  Many of my peers share this perspective on teaching physiology.

Irrespective of one’s mastery of integrative physiology, as teachers we must be ready and willing to think creatively on our feet to answer questions or clarify points of confusion.  A common mistake in teaching is to interpret the lack of questions to mean our students have mastered the concept we just explained, such as the oxygen-hemoglobin dissociation curve.  Despite the amazing color-coding of green for pH 7.35, red for pH 7.0 and blue for pH 7.5 and perfectly spaced lines drawn on that PowerPoint slide, your Ms./Mr. Congeniality level of enthusiasm, and sincerest intentions – you lost them at “The relationship of oxygen saturation of hemoglobin to the partial pressure of oxygen is curvilinear.”  You know you lost them.  You can see it in their faces.  The facial expression varies: a forehead so furrowed the left and right eyebrows nearly touch, the cringing-in-pain look, the blank almost flat stare, or my favorite – the bug-eyed look of shock.  Unfortunately, it will not always be obvious.  Thus, it is essential we make an effort to become familiar with the class as a group and as individuals, no matter how large the class.  Being familiar with their baseline demeanor and sense of humor is a good start.  (I have students complete ‘Tell Me About Yourself’ cards on the first day of class; these help me a great deal.)  During lecture, we make continual and deliberate eye contact with the students and read their faces as we lecture and talk to them, rather than at them.  In lab we work with and talk to each group of students and even eavesdrop as a means to assess learning.  Time in class or lab is limited, which tempts us to overlook looks of confusion and move on to the next point.  However, when students do not accurately and confidently understand a fundamental concept, they may have even greater difficulty understanding more integrated and complicated mechanisms.  You must recognize non-verbal, as well as subtle verbal cues that students are not following your logic or explanation.  In that immediate moment you must develop and deliver an alternative explanation.  Improvise.

As per Merriam-Webster, to improvise is to compose, recite, play, or sing extemporaneously; to make, invent, or arrange offhand; to fabricate out of what is conveniently on hand.  What do you have on hand right now to create or develop a new explanation or analogy?  Work with what you have within the confines of the classroom.  These resources can be items within arm’s reach, anything you can see or refer to in the classroom.  You can also use stories or anecdotes from your own life.  Reference a TV commercial, TV show, movie, song, or cartoon character that is familiar to both you and your students.  Food, sports, and monetary issues can be great sources for ideas.  I cook and sew, which gives me additional ideas and skills.  Play to your strengths.  Some people are the MacGyvers of teaching; improvisation seems to be a natural born gift.  However, we all have the basic ability to improvise.  You know your topic; you are the expert in the room.  Tap into your creativity and imagination; let your students see your goofy side.  Also, as you improvise and implement familiar, everyday things to model or explain physiological or structure-function relationships you teach your students to think outside the box.  Students learn by example.  My own undergraduate and graduate professors improvised frequently.  My PhD and post-doc advisors were comparative physiologists – true masters of improvised instrumentation.

Improvise now, and improve later.  Some of my improvised explanations and demonstrations have worked; some have fallen flat.  In some cases I have taken the initial improvised teaching tool and improved the prototype and now regularly use the demonstration to teach that physiological concept.  Here are three examples of improvisational analogies I have used for the anatomy of circular folds in the intestine, the opening and closing of valves in the heart, and the role of alveoli in pulmonary gas exchange.  Disclaimer:  These are not perfect analogies and I welcome comments.

Surface area in the small intestine.  Students understand that the surface area of a large flat lab table is greater than the surface area of a flat sheet of notebook paper.  A sheet of paper can be rolled into a tube, and students understand that the surface area of the ‘lumen’ is equal to the surface area of the paper.  In AP-I, students learned that microvilli increase the surface area of the plasma membrane at the apical pole of an epithelial cell, and many teachers use the ‘shag carpet’ analogy for microvilli.  Similarly, they understood how villi increase surface area of the intestinal lumen.  However, some students did not quite understand or cannot envision the structure of circular folds.  As luck would have it, I was wearing that style of knit shirt with extra-long sleeves that extend just to your fingertips.  I fully extended the sleeve and began to explain. “My sleeve is the small intestine – a tube with a flat-surface lumen (my arm is in the lumen) – no circular folds.  This tube is 28 inches long and about 8 inches around.  As I push up my sleeves as far as I can, and the fabric bunches up.  These messy folds that form are like circular folds.  And, now this 6 inch tube with all these circular folds has the same surface area as the 28-inch plain tube.”  (I sew; I know the length of my own arm and am great at eyeballing measurements.)

Heart valves open and close as dictated by the pressure difference across the valve.  This is integral to ventricular filling, ejection of blood into the lung and aorta, and the effect of afterload.  Heart valves are one-way valves.  A few students heard ‘pressure difference’ and were lost.  Other students had trouble understanding how stroke volume would decrease with an increase in afterload.  What can I use in the room?  There’s a big door to the lab, and it has a window.  It opens in one direction – out, because of the doorframe, hinges and door closure mechanism; it only opens, if you push hard enough.  I ran over to the door.  “The lab door is a heart valve.  It’s the mitral valve, the lab is the atrium, and the hallway is the ventricle.  The door only opens into the hall – the mitral valve only opens into the ventricle.  When it closes, it stops once it sits in the frame.”  I asked a student about my size to go outside the room, and push against the door closed – but let me open it; she could see and hear me through the window.  “As long as I push with greater force than she applies to keep it shut, the door or valve will open.”  The student played along and made it challenging, but let me open the door.  ‘Blood flows from the atrium into the ventricle, as long as the valve is open.  But, as soon as the pressure in the ventricle is greater than the pressure in the atrium the valve closes.”  The student forcefully pushed the door shut.  They got it!  Now, afterload …?  Back to the lab door.  “Now the lab door is the aortic valve, the lab is the left ventricle, and the hall is the aorta.  This valve will open and stay open as long as the pressure in the ventricle is greater than the pressure in the aorta.  The longer the valve is open, the greater the volume of blood ejected from the ventricle.  The volume of blood ejected from the ventricle in one beat is the stroke volume.  The pressure that opposes the opening of the aortic valve is afterload.  What happens with afterload?”  I then asked the tallest, strongest student in class to play the role of Afterload; he too got into the role.  “Afterload has now increased!  The pressure that opposes the opening of the valve has increased.  Will I or won’t I have to push harder to open the door – now that afterload has increased?”  The student is very strong; I can barely push the door open.  “I not only have to push harder, but I can’t keep the door or valve open for very long.  Look.  Even though the ventricle pressure is greater, the valve is open for a shorter period – so less blood is ejected and stroke volume decreases.”

Alveoli increase the surface area for gas exchange.  Students see the lungs as 2 large sacs, and the surface area available for gas exchange between air and blood is simply the inner lining of each sac.  However, each lung is made of millions of tiny air sacs or alveoli into which air flows.  How this anatomical arrangement greatly increases surface area for gas exchange is not intuitively obvious.  The overall size of the lung does not increase, so why would the surface area increase?  As luck would have it, it was Halloween.  I had brought a big bonus bag of individually wrapped bite-size candies to class.  “One lung is like this bag.  If we cut open the bag and measure the sheet of plastic, it would be about 18 inches by 12 inches or 216 square inches.  But if we completely fill it with candy, it might hold at least 150 pieces of candy.”  I quickly unwrapped one piece of candy, held up the wrapper, and estimated a single wrapper was 4 square inches.  “If we fill one bag with 150 pieces of candy, we then have 600 square inches of surface area.  Which would provide greater area for gas exchange: one big lung or millions of alveoli?”  I revised this particular improvised explanation using scissors, a ruler and two 11-oz bags of Hershey’s® kisses.  I carefully opened both bags and transferred kisses from one bag to the other, until it was completely full, i.e., 112 kisses, and taped it shut.  I then fully opened up the other bag; it was 10 inches x 8 inches or 80 square inches.  An individual kiss wrapper is 4 square inches; all 112 individual wrappers are 448 square inches.

My improvised analogies are not perfect, but they have served as great teaching tools.  If you can improve upon these, please do.  Share any suggestions you have and lastly, share your improvised explanations and analogies.  Thanks.

Alice Villalobos received her B.S.in biology from Loyola Marymount University and her PhD in comparative physiology from the University of Arizona-College of Medicine.  She has been in the Department of Biology at Blinn College for 4 years where she teaches Anatomy and Physiology II and Introduction to Human Nutrition.  She guest lectures in undergraduate courses at Texas A&M University on the topics of brain barrier physiology and the toxicity of heavy metals.
How to motivate students to come prepared for class?

The flipped classroom is a teaching method where the first exposure to the subject occurs in an individual learning space and time and the application of content is practiced in an interactive guided group space. Freeing up class time by shifting traditional lecture outside of class allows the instructor more time for student-centered activities and formative assessments which are beneficial to students. The flipped teaching model has been shown to benefit students as it allows self-pacing, encourages students to become independent learners, and assists them to remain engaged in the classroom. In addition, students can access content anytime and from anywhere. Furthermore, collaborative learning and peer tutoring can be integrated due to freed-up class time with this student-centered approach. Given these benefits, the flipped teaching method has been shown to improve student performance compared to traditional lecture-based teaching. Compared to the flipped classroom, the traditional didactic lecture is considered a passive type of delivery where students may be hesitant to ask questions and may omit key points while trying to write or type notes.

There are two key components in the flipped teaching model: pre-class preparation by students and in-class student-centered activities. Both steps involve formative assessments to hold students accountable. The importance of the pre-class assessment is mainly to encourage students to complete their assignments and therefore, they are better prepared for the in-class application of knowledge. In-class activities involve application of knowledge in a collaborative space with the guidance of the instructor. Although the flipped teaching method is highly structured, students still come to class unprepared.

Retrieval practice is yet another powerful learning tool where learners are expected to recall information after being exposed to the content. Recalling information from memory strengthens information and forgetting is less likely to occur. Retrieval of information strengthens skills through long-term meaningful learning. Repeated retrieval through exercises involving inquiry of information is shown to improve learning.

The use of retrieval strategy in pre-class assessments is expected to increase the chance of students completing their pre-class assignment, which is often a challenge. Students attending class without having any exposure to the pre-class assignment in the flipped classroom will drastically affect their performance in the classroom. In my flipped classroom, a quiz consisting of lower level of Bloom’s taxonomy questions is given over the pre-class assignment where the students are not expected to utilize any resources or notes but to answer questions from their own knowledge. Once this exercise is completed, a review of the quiz and the active learning portion of the class occurs. I use a modified team-based learning activity where the groups begin answering higher order application questions. Again, no resources are accessible during this activity to promote their preparation beforehand. Since it is a group activity, if one student is not prepared, other students may fill this gap. The group typically engages every student and there is a rich conversation of the topic being discussed in class. The classroom becomes a perfect place for collaborative learning and peer tutoring. For rapid feedback to the students, the group answers to application questions are discussed with the instructor prior to the end of the class session.

Student preparation has improved since the incorporation of the flipped teaching model along with retrieval exercises in my teaching, but there are always some students who are not motivated to come prepared to class. It is possible that there are other constraints students may have that we will not be able to fix but will continue to be searching for and developing newer strategies for helping these students maximize their learning.

Dr. Gopalan received her PhD in Physiology from the University of Glasgow, Scotland. After completing two years of postdoctoral training at Michigan State University, she began her teaching endeavor at Maryville University where she taught Advanced Physiology and Pathophysiology courses in the Physical Therapy and Occupational Therapy programs as well as the two-semester sequence of Human Anatomy and Physiology (A&P) courses to Nursing students. She later joined St. Louis Community College where she continued to teach A&P courses. Dr. Gopalan also taught at St. Louis College of Pharmacy prior to her current faculty position at Southern Illinois University Edwardsville where she teaches Advanced Human Physiology and Pathophysiology for the doctoral degrees in the Nurse Anesthetist and Nurse Practitioner programs. Besides teaching, she has an active research agenda in teaching as well as in the endocrine physiology field she was trained in.