By Dani O’Brien and Jay Lunden
The annual CAT’s STEM Educators’ Lecture, held on March 31, 2026, featured Dr. Bryan Dewsbury, director of SEAS, Science Education and Society. His presentation, Teaching for Meaning and Purpose: Preparing Students for Civic Engagement and Participation, left attendees inspired and challenged them to reconsider the role of STEM education in a democratic society. An associate professor of biological sciences at Florida International University, Dewsbury reminds us that teaching STEM content is only part of the job. The deeper work, he argues, is ensuring students leave better equipped to think, engage, and participate in the world around them.
Although he was speaking specifically to STEM educators, Dr. Dewsbury outlined three pillars of inclusive, purpose-driven teaching that are relevant to educators across disciplines.
1. Embracing Diversity
Speaking candidly about his experience as a Black educator in STEM, Dewsbury points out that many institutions display diversity on their websites while maintaining no real infrastructure to support the people they recruit. More recently, he reminds us, the word diversity itself has been weaponized, turned into a liability rather than a value. Dewsbury calls on us to challenge this reframing, noting that diversity must be celebrated and valued. Drawing on his background as an ecologist and scuba diver, he offers a helpful ecological metaphor: in a healthy marine ecosystem, seagrass and algae each occupy their own niche, but together they make the whole system rich. True diversity, he argues, calls for intentional design, not optics.
2. Engaged Dialogue
One of Dewsbury’s classroom mantras, repeated aloud every Monday in a call-and-response: “You do not know something until you can explain it to your roommate.” Real understanding, he argues, only becomes visible through dialogue. This means intentionally diverse groupings, community-created agreements, and creating multiple opportunities for students to talk with each other and with him. He also builds metacognitive feedback loops into his exams, asking students to predict their scores and then examining the gap between students’ predicted and actual performance.
3. Civic Participation
Perhaps the most urgent of Dewsbury’s three pillars is his insistence that science education is inseparable from democracy. Drawing on Enlightenment history, the influence of John Locke, and the tradition of John Dewey, he argues that science, as a method of collective evidence-gathering, is foundational to self-governance. From Dewsbury’s perspective, teaching students to evaluate information, identify trustworthy sources, and engage as citizens is not a distraction from STEM, but rather its highest purpose.
Ideas into Practice
Temple’s STEM faculty are already implementing transformative initiatives modeled on Dewsbury’s work. In the College of Science and Technology’s Department of Biology, Dr. Jay Lunden created the Peer Laboratory Assistant (PLA) program in Fall 2023, where undergraduate students provide peer instruction in the introductory biology labs. Developed through Lunden’s participation in Dewsbury’s Deep Teaching Residency during Summer 2023, PLAs are trained to partner with laboratory instructors (often graduate TAs or adjunct faculty) to teach foundational concepts and assist students with technical challenges in the labs. PLAs also fill a mentorship role: advising students on course selection, helping students identify appropriate campus resources, and even assisting with creating study groups and supplemental course help.
In the first semester (Fall 2023), 9 PLAs were funded by CST’s STEM Leadership Fellowship to conduct their work. Outside of fellowship offerings, PLAs can earn academic credit for their service and professional development. Since Fall 2023, the program has significantly expanded and there are currently 35 PLAs working in the introductory biology (BIOL 1111 & 1112) labs each semester. The program has seen a sharp rise in interest from students who are eager to gain teaching experience and motivated to help junior students – last year, over 100 students applied to join the program. “Being a PLA helped me master biology concepts and gain confidence in my communication skills. I found that students had more opportunities to ask for help through my partnership with lab instructors,” says Emma Gray, a senior Health Professions major who has been a PLA since Spring 2024.
As a result of the success of the PLA program in Biology, other departments have adopted their own models. In Fall 2025, the Chemistry Department piloted “Peer Learning Assistants” (in keeping with the PLA acronym); these students were recruited to provide peer instruction in General Chemistry (CHEM 1031/1032) recitations and lectures. In Spring 2026, the Physics Department deployed PLAs to their introductory physics (PHYS 1061/1062) labs. Dr. Liz Cerkez, Associate Professor of Instruction in the Department of Chemistry, shared that “seeing the success of the biology PLA program, both for the students serving as PLAs and the students enrolled in the classes, we adopted the PLA program to help support group learning activities in General Chemistry. One year into the program, we’re already seeing the benefits for all students involved and are now expanding to support our Organic Chemistry courses in the next year.” Other departments and colleges are considering adopting versions of their own.
Overall, the PLA program is a “triple-win” for STEM education at Temple: students in the labs get access to additional help, PLAs gain valuable experience in teaching and mentoring, and faculty teaching in the labs get assistance with providing individualized support in their instruction and demonstrations of lab techniques. When asked what they enjoy most about the program, almost every PLA responds with some variation of “being able to help other students.” With the University’s new strategic plan now in place, the PLA program supports the plan’s core mission of student success and place-based impact. If you are a faculty or staff member and are interested in learning more about the PLA program or how to start a similar initiative in your unit, please reach out to Jay Lunden for more information.
New Peer Lab Assistants at the annual Biology PLA training in August 2025.
Dani O’Brien is Accessible Pedagogy Specialist at Temple’s Center for the Advancement of Teaching.
Jay Lunden is Associate Professor of Instruction in Biology at Temple’s College of Science and Technology.



