Day 64: LOL Diagrams, Elevators, & Volume

AP Physics: LOL Diagrams

We did the mistakes game again today (which my AP students now think of as standard whiteboarding in physics) for some problems with conservation of energy calculations. To avoid getting bogged down in the algebra, where most of my students are pretty strong, I had them put their mistake in the LOL diagram or writing the conservation of energy equation. Most groups worked on an accurate solution before they made their mistake, and one group did a nice job of setting up an equation for a problem where 10% of a baseball’s energy is dissipated before it reaches the peak of its path.

lol neat approach.jpg

Physics: Elevators

Students whiteboarded their work on Casey Rutherford’s elevator situations worksheet. A lot of students struggled conceptually with the direction of the net force, but seemed to resolve that by the end of the hour. I’m trying to lower the social risk of whiteboarding to get more engagement, so I gave each problem to two different groups, then had them meet and come to a consensus on a solution. Afterward, students did a gallery walk of all the whiteboards. We also discussed a video I made of a balance on an elevator to reinforce the worksheet.


Chemistry Essentials: Volume

Students filled geometric solids with water to find a relationship between the volume and the amount of water they could hold. I need to put some thought into how I introduce the lab; in particular, I don’t think my students have much concept of why this relationship is worth looking at. I know I can make use of that as we move into density, but I’m not sure how to frame the lab so they see a purpose in it up front.


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