Today I officially joined the club of physics teachers who've gone to Home Depot to get whiteboards cut for groupwork. This was not a viable option when I taught in a city and had no car!

At #AAPTSM23 I learned that the Equivalence Principle follows immediately from energy modeling: if you make your system just the falling object, then your model is equivalent whether the KE comes into the system from a grav field or from another interaction.

Thanks @lernerphysics.bsky.social !

I’m presenting for the first time ever at @AAPTHQ 😬. Stop by Ballroom A02 Tuesday at 9 am to hear me present the work I did last summer with @SpectrumXCenter and the @TheNRAO developing radio frequency lesson for middle and high school teachers. #AAPTSM23