**AP Physics 1: Impulse**

We started by discussing the idea that both the magnitude of a force and the amount of time its applied seem to matter for changes in momentum to get to the idea that we could compare the area of a force vs. time graph to the change in velocity. Students used elastic strings to connect carts to force sensors and started collecting data. This was the first lab where students used the dynamics track and where they collected quantitative data from the LabQuests, but students seemed to get comfortable with the equipment pretty quickly.

**Physics: CVPM Mistakes Whiteboarding**

Students did mistakes whiteboarding with yesterday’s quantitative CVPM problems. In my 1st hour, a lot of groups were very vocal about picking a mistake one of them had made, and I love the way this places a value on their mistakes and gives them the opportunity to conquer the mistake.

**Chemistry Essentials: Density Mistakes Whiteboarding**

This was my chemistry class’s first experience with mistakes whiteboarding. I started the hour with a short vocabulary review that seemed to help cement the key concepts we’re working with. The class was very quiet during the whiteboard presentations, so we only go through one. I think tomorrow I’ll have them do some talking to a neighbor about each board before we shift to whole class.

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