AP Physics: Whiteboarding
Students whiteboarded some torque problems. I can tell the last week or so has been a little disjointed; I had a lot of students trying to use Universal Gravitation to find the force of gravity in the torque problems and some were having trouble with what we meant by the radius. I spent some time talking with those groups how to decide when to use each version of the force of gravity equation, and that helped resolve things.
Students wrapped up collecting data for the period of a spring. I overheard a great conversation in a lab group; one student was griping a little about collecting data for the mass since he was convinced it shouldn’t matter based on the pendulum lab. Once they had a few data points, though, there was a moment when he lit up and made a beautiful connection to energy transformations to explain why mass mattered.
Chemistry Essentials: Stoich
We got the hardware out again to start stoichiometry. Students assembled nuts, bolts, and washers into “molecules” and predicted how many grams of each molecule they should have after a chemical reaction. The manipulatives seemed to help a lot of students wrap their heads around what is going on in a stoichiometry problem, which I’m hoping will translate into success with the paper and pencil problems tomorrow.