Discussions
Talk about resources, share how you used them in your classroom, and ask the community for help.
Tips for setting up the viscosity measurement station
We found that pre-warming the glycerin samples to room temperature significantly reduces measurement variability. Also, using a digital viscometer instead of the falling-ball method made the lab much more accessible for students with motor impairments.
Lens calculations — common student mistakes
My students consistently confuse sign conventions for converging vs. diverging lenses. I added a one-page cheat sheet as a handout before the lab — happy to share it if anyone wants to incorporate it into the package.
Remote-friendly modifications for the circuit models lab
During COVID we converted this to a fully remote lab using CircuitLab for the simulation portion. The key insight was giving students pre-built circuit templates rather than having them wire from scratch — the learning objective is analysis, not construction.
How I ran the viscosity lab with 120 pre-med students
Ran this with 4 sections of 30 students each over two weeks. The biggest challenge was equipment throughput — we solved it by setting up 6 stations and rotating groups every 15 minutes.
Adapting the error analysis guide for community college
Our students come in with weaker math backgrounds, so I scaffolded the error propagation section heavily — added worked examples before each exercise and replaced the calculus-based derivations with numerical estimation methods.
Best approach to teach error propagation to pre-med students?
My pre-med students really struggle with error propagation — they can do the mechanics problems but freeze when asked to propagate uncertainties. Has anyone found an approach that clicks for students who aren't math-inclined?
Recommendations for affordable ECG simulators?
AnsweredWe want to add an ECG component to our bioelectricity module but our budget is tight. Does anyone have experience with low-cost ECG simulators or DIY setups that actually work in a teaching lab context?
How do you handle lab safety with blood analog fluids?
Our safety officer flagged concerns about glycerin-based blood analogs. Even though they're non-toxic, students sometimes react negatively to anything that looks biological. How do other institutions handle safety protocols and student anxiety around these materials?
Transitioning from cookbook labs to inquiry-based — where to start?
My department wants to move away from traditional 'follow the recipe' labs toward more inquiry-based approaches. For those who've made this transition — what was your first step? Did you convert existing labs or start fresh?