Monthly Archives: August 2022

Do Animals & Aliens belong in a Human Physiology course?

As a human physiology instructor, one of the most frequent comments I get from students is about how hard the course is. In fact, I have started to bring this up right at the beginning of the semester and offer my students many ways to overcome the challenges, including keeping up with the reading and the homework, coming to office hours with questions, forming study groups, etc… There are several reasons why the students struggle with the physiology course. Physiology can be hard for students due to the amount of material and the nature of the subject which requires integrating knowledge from other fields such as anatomy, biochemistry, cell biology, physics, and chemistry. There is also a lot of heterogeneity among the students learning human physiology. They may be biology majors taking physiology as an elective, or those who are preparing for a career in a health profession, and they may be coming from different backgrounds with varying levels of preparation. Some students may start the course with basic biology knowledge and some pre-conceived notions that may even hinder their ability to learn the intricacies of human physiology.

There is a belief among many physiology students that since there is a lot of factual detail then memorization is the way to go. This inevitably leads to memorization fatigue, and confusion when seemingly contradictory material is encountered. Instead of focusing on the overwhelming number of details, a better strategy would be to focus on common themes or core concepts that once learned will allow the formation of a strong foundation. When the students learn core concepts, they do not need to learn all the details of all the systems, just the common themes and this reduces the cognitive load. By having to remember fewer items, the students can work on learning as opposed to memorizing. Focusing on core concepts allows the students to transfer their learning from one body system to another with an understanding of the basics. Core concepts provide a way to raise the level of knowledge of the students, so that long after they have completed the course, they can continue to learn physiology even if they do not remember all the details.

Michael & McFarland (2011) have compiled a list of 15 physiology core concepts based on physiology faculty surveys that describe the most important parts of teaching physiology. It is clear from Michael et al. (2017) that these core concepts are ‘general models’ as they are widely applicable in most areas of physiology. Some of these core concepts include homeostasis, cell membrane, cell-cell communication, flow-down gradients, and interdependence and provide an excellent framework for the teaching of physiology.

The wide applicability of core concepts allows the instructor to generate models involving animals as well as hypothetical aliens. It may be reasonable to assume that learning core concepts will then enable the students to answer questions and solve problems involving animals and aliens. There are some really good reasons for the use of animal and alien models for teaching core concepts as well as for assessment. The use of animals & aliens in teaching and assessment removes any preconceived notions about how the human body works and can hone in on the most important facets of the concepts that we want the students to learn. Animal & alien models in assessment can be an excellent way to test for comprehension of concepts and the ability to transfer the learning from the known system to a novel scenario.

Problem sets with animals & aliens can be used in teaching as well as assessment. Courses on animal physiology or comparative physiology can shine a spotlight on the common themes between animals and humans. Animal models are routinely used in research to study human diseases as well as to test interventions. Teaching modules that incorporate animal physiology like the one from HHMI Biointeractive on dinosaurs’ ability to maintain their body temperature can engage the students to apply principles of physiology to understanding how dinosaurs were able to regulate their body temperature. Tools like the Fictional Animal project (Batch et al. 2017) help students in their systems thinking to identify the most important physiological models to integrate the various body systems and in addition to understanding the interactions between an animal and its environment.

With the increased interest in space exploration and human travel to moon and Mars, physiology questions on aliens can help us learn more about human physiology and how we might adapt to space. Research on extraordinary life forms at the bottom of the oceans and hydrothermal vents that provide us with more ways to imagine life in space while emphasizing similarities with human physiology. Most importantly, bringing animals, fictional or real, and aliens into the classroom can increase student engagement and impact learning and transfer of knowledge.

One way to use non-human examples is by using the framework of Test Question Templates (TQTs; Crowther et al. 2020), in which clearly articulated Learning Objectives (LO) are used to generate questions. Every TQTs based on an LO can be used to create multiple questions, thus reducing the possibility of memorizing answers. The use of TQTs can result in questions that assess student understanding and application of core concepts, expecting students to use higher levels of Bloom’s taxonomy. (Casagrand & Semsar, 2017). The consistent use of TQTs can build an appreciation of physiology concepts leading to better preparation for patient care and real-life medical scenarios.

The appeal of TQTs for students, in addition to learning concepts as opposed to facts, is also that they can envision what questions can be asked based on an LO. TQTs can be used in class as models for generating questions in which the students can also participate. As instructors, we like it when our students answer questions, but it is even better when they ask the questions. So, does it matter to a pre-health student whether a dinosaur was endothermic or ectothermic? And the answer to that is if it helps the student understand how temperature regulation works, it certainly does.

References:

Batch, S.A., et al. 2017 Adv Physiol Educ. 41:2 https://doi.org/10.1152/advan.00159.2016

Casagrand, K. and Semsar, J. (2017). Adv in Physiol Educ. 41: 170-177. 10.1152/advan.00102.2016

Crowther, G. J. et al. (2020). HAPS Educator 24(1):74-81. https://doi.org/10.21692/haps.2020.006

Michael, J. and J. McFarland (2020). Advances in Physiology Education 44: 752-762. https://doi.org/10.1152/advan.00114.2020.

Michael, J. & McFarland, J. (2011) https://doi.org/10.1152/advan.00004.2011

Usha Sankar Ph.D. is a Sr. Lecturer at Fordham University, Bronx, NY and has been teaching human physiology for over 10 years. Usha is very interested in bridging the gap between teaching and learning and is looking to improve her own physiology teaching as she believes learning about the inner workings of the human body is the most fun thing anyone can do. Usha is also involved in conducting air quality research and collaborating with young scholars from middle and high schools about air quality, health impacts, and climate change research. This research combines all her interests including human health, education, and climate change.

Usha Sankar Ph.D.

Senior Lecturer

Dept. of Biological Sciences

Fordham University

441 E Fordham Rd

Bronx, NY 10458

Impactful activities to create a framework to support team-based activities

While the recent pandemic has forced a number of rapid reforms in learning and teaching, the need to rethink how we learn and teach at the tertiary level began well before that. This has been exemplified by increasing interest in topics such as flipped classrooms, authentic assessments, and students as co-contributors. Although one might argue that the idea of flipped classroom is not new, there has been a growing push to create authentic learning experiences and authentic assessments to better prepare our graduates for the next stage of their careers – be it further professional education or employment. To work towards this goal our department recently restructured our final-year physiology courses to create an environment that empowers students to be agents of their own learning. We believe that over their lifetimes of their degrees, the students should transition from learning through knowledge transfer to self-guided agents in their own learning to promote lifelong learning. To achieve this aim, our assessments were restructured to shift the focus and emphasis from tests and exams, to more authentic assessment tasks. Here we will share an example of one such assessment and the guides we provide to help the students succeed.

In one subject Physiology: Adapting to Challenges, the students are required to work in a team on a project to be presented in a mini-student conference at the end of the semester, to mimic a scientific conference. While a team presentation might not be a truly novel idea, a few factors that we have included in the project design make it distinctive from other similar assessments.

In the early years we were concerned that students would shy away from the team project aspect of the subject. We, like many of our colleagues, thought that the students would detest the prospect of group work and thus be put off by a group project as was observed in a study at another Australian University (White et al. 2007). However, when we surveyed our second- and third-year Physiology students, it was interesting to find that approximately 75% of respondents in both second- and third-year preferred working in groups rather than individually, and the majority of the students understand the importance of acquiring teamwork skills. Many raised concerns about working in a group from prior negative experiences, similar to concerns raised in a previous blog post here. This led us to come up with ways to support the students’ success in this team project. Here we will share some of the lessons we have learned along the way.

1) Broad topics with multiple possible directions

The students were presented with a number of broad research topics or questions of physiology, examples of topics include “Tips and tricks to aging well.” Or “Stress: is it always bad?”. While at first these topics might seem like ‘bad’ topics as they do not appear to provide any research direction, this apparent flaw is also the beauty of this design, as the ‘vagueness’ of the topic gives the student groups flexibility and scope to develop and identify their own common interests within the broad field of physiology and is one of the unique aspects of this assessment. As the starting point covers a broad range of potential directions, the team must arrive at a consensus on the ultimate and final direction of the project. This freedom was an intentional design to give students agency and choice in their project. While some teams do find this lack of direction challenging, the majority of the feedback from the students was positive, with 85% of the respondents in an end of semester survey enjoying the flexibility this provides. In fact, some students stated that they have never experienced this type of freedom in taking their learning into their own hands in their university degree and felt empowered by this option. The feedback from academics who help review these presentations was overwhelmingly positive and we have been consistently impressed by the quality and depth of work produced by our undergraduate students.

2) Create groups based on common interest

The groups were created based on the student nominated projects and not randomly assigned. The students are asked to nominate and rank their top three picks of the projects, together with a short description of their reason for picking that project. The student groups are created from their nominations and the rationale for their interest in the project. This creates groups with a common goal and facilitates the group formation process. While diversity in groups is a well-recognized factor in strong groups, it is also important that groups have common goals. A fine balance must be struck between diverse groups and the common goal. Student feedback on this aspect of the assessment was positive as it gave them a choice on what to research on a topic of their choice. Something that they don’t often get a chance to do in other subjects.

3) Nominate a team mate – if you want

Our previous experience in group formation has shown us that being introduced to a group of unfamiliar people can be a stressful experience for some students, especially with the added stress of an associated assessment. We found that many students appreciated the option and opportunity to nominate a team mate. This reduced their social anxiety in the formation phase of the team. While some students did try to ‘cheat’ the system by either nominating multiple people, or in some cases nominating people in a chain, it is up to the academic to decide whether to allow or disallow these cases. It is important to keep in mind a number of other factors such as making sure that no single student in any group is the solo person without a nominated ‘buddy’ to minimize social exclusion, and still maintaining diversity in the group. The observation from the tutors and teaching staff was that this nominated ‘buddy’ system reduced the social anxiety in early group formation and allowed the groups to move forward to the next stage to discuss their direction sooner.

4) Effective ice breaker activities

Most of us would have experienced ice-breaker activities in a workshop or other types of settings and may have cringed at the idea of these activities. However, finding effective ice breaker activities can help overcome the initial social anxiety and allow the students to get to know each other. The key to effective ice breakers is to choose ones that require and assist their communication, whether it is discussing an idea that is not associated with the assessment (e.g. team name) to reduce the stress, or activities where the team members get to learn something about each other, or work towards a common goal that is not assessment associated. The ultimate aim is to get them to start conversing and help ease the more in depth and intense discussions that will follow. Indeed, in a survey of our students following the ice-breaker activity, the students noted that the ice-breaker activities were cliche but did benefit by increasing comfort with team members by the end of the activity and thus could see the benefit of the activity.

5) Team contract

Following the ice breaker activity, the student teams are asked to discuss and sign a team contract. The team contract provides a framework for the students to discuss and outline their expectations within the team. It includes basic information such as contact information. There are also general procedural discussions such as location for sharing documents, the best means of communication within the team, the preferred method for everyone. The students are advised to set up a team chat that everyone can access. This was an extra layer of challenge in the online learning space as some messaging tools may not be available in some geographical locations.

As the team progresses through the contract, the discussion topics get progressively deeper. The team is asked to discuss their goals and expectations of the project and of each other. They are encouraged to discuss the frequency and duration of meetings outside of scheduled class times; to include discussion of people work responsibilities so they can be considerate of others in setting alternative meeting times; preparation for meetings; note taking in meetings. Finally, the team is asked to discuss how they will deal with conflicts in their group, including topics such as assigning specific tasks, or unmet expectations. The students are provided with scenarios on potential conflicts that they might face and given the time to work through the scenarios as a team. Thus, the team contract guides the teams in a structured and scaffolded discussion about some of the challenging situations they may face.

For the majority of students, this is the first time they have encountered this type of document and it was a daunting task to begin with. However, many students also found the structure of the document with the guided discussion points helpful in navigating some of the more tricky questions.

6) Peer-review and feedback

The student teams undergo two rounds of peer review over the course of 8 weeks. The first peer-review is a required (hurdle) task but is not included in the assessment. This peer review takes place 3 weeks after the groups are formed. The first peer-review is entirely a formative feedback for each member so they have the opportunity for self-reflection and to receive anonymous feedback from their team. This feedback provides the students with an opportunity to adjust any problem behaviors before the final peer review at the end of the project. It also provides the academics with an opportunity to identify any group dynamic issues before it gets too late!

The second peer-review occurs after the final presentation and is counted towards the student grade. The average of the grade they receive from their team mates is used for the grade. In each peer review, the students are asked to assess their team members in a number of criteria:

  • Initiative / self – motivation / motivates others
  • Communication
  • Accountability & sense of responsibility
  • Timeliness and preparation
  • Contribution to the team work & Commitment to the team success
  • Respect & Adaptability

Another key factor is that the peer-review score may be used to adjust the team presentation grade if the student receives a low grade from their team. This increases the student accountability to their team. This also provides the team members a means to hold their team mates to account and minimizes the impact of ‘freeloading’ in the team project. Student feedback on this aspect confirms that peer review is a good way to encourage individual accountability and contribution to the team project with 83% of the respondents in our end of semester survey agreeing to that statement.

We used the tool Feedback Fruit for the peer-review process and it has been a smooth process as this is integrated into our learning management system (Canvas) and the groups synch and import automatically. This reduces the workload tremendously! Before Feedback Fruit become available we tried the same process with Qualtrics. However, this required much more background work to set up the groups for the peer-review process.

We have now run this assessment or similar variations of it, for 5 years, over this time we have made a number of tweaks and adjustments to improve the student learning experiences. Here we have shared some of the lessons we have learned along our journey that we hope readers will find useful. We believe that with some careful sign posts and guard rails we have created a positive and enjoyable learning experience for the students. Not only has this made for an enjoyable learning experience and environment for the students, the workshops have become a highlight of our weeks as we watch the student projects develop and grow. This is reflected in the overall feedback from students, tutors, and assessing academics. Most pleasing is perhaps the student feedback that many found this to be an enjoyable and highly memorable experience and was a highlight of their university journey and they may have learned some interesting facts about physiology that they will take with them as they continue their life journeys.

Angelina is a senior lecturer and the Physiology discipline coordinator in the Department of Anatomy and Physiology in the Faculty of Medicine, Dentistry and Health Sciences, at the University of Melbourne. Her current learning and teaching focus is on practical-based in practical classes, using technology to engage learners in large cohorts in Physiology, and in integrating employability skills within the science and biomedicine curriculum.

Dr Angelina Y Fong PhD GCUT | Senior Lecturer

Physiology Discipline Coordinator

Department of Anatomy and Physiology

School of Biomedical Sciences

Faculty of Medicine, Dentistry and Health Sciences
The University of Melbourne, Victoria, Australia

White, F., Lloyd, H., & Goldfried, G. (2007). Evaluating student perceptions of group work and group assessment. Sydney University Press