Today was all about gathering data for the collisions experiment. We did not get finished so tomorrow we will wrap up data gathering and the analysis. It’ll be a chance to have some of the students learn how powerful and useful spreadsheets can be. I’m also having them post a movie or three of the collisions to our Schoology site so we can reference them during our discussion AND so I can send an email to the parents to let them see what their sons/daughters are up to in physics. I wish I had remembered to post a Tweet about it earlier today.
Today we WB’ed the Energy Bar Graphs (aka LOL’s). I really like WB’ing this because it provides a chance for some really rich discussion. Here is an example:
After we agreed on the analysis for this problem, I made an addition to the problem:
I added a second path and asked from which path, if either, would the crate have a greater velocity when it reached the location marked by the arrow. We discussed it and most agreed it was the same…. but thankfully, some students needed proof. I used this:
along with a Bee-Spy photogate to prove that the velocity was the same. Yep, it was a pretty good day.