Yesterday was the test, and today, I passed back the test. I didn't write a blog yesterday, because I sat there writing an answer key for the test, organizing my desk, working on orders for the science department, and writing reassessments for my AP Physics C class. And today, I passed back the test, and I asked them to spend 90 seconds looking at the test on their own looking at their comments before looking at someone else's test. I gave them some time to look at their tests (and the cool spreadsheets I made for them). Then we whiteboarded some questions, and it was good. I had to bring up Clever Hans again. Students get shaken up when you ask them a question; they're sure they are wrong.
I felt that we can sometimes think that every day is so cool when we look on line, but one of the best things of a #teach180 blog is to realize the pedestrian days are just as needed and useful. Students really understood the difference between propagation velocity and velocity of the particles. They asked questions about transverse versus longitudinal waves. And we talked about how converting from grams to kilograms is so useful.