Today we finished off the unit size worksheet 2. We graded this in class and turned it in. If you are struggling with this concept watch this review video to help you out.
We then started an observation lab. This lab is the "What's that sound" lab. We our trying to find 2 twin objects that are stored in film canisters. The only type of observation that students can do is to oscillate the canisters, shake them near their ears. Will finish this up on Friday.