Tuesday, October 21, 2008

Class on Tuesday, October 21

Today in class we started off by discussing the midterm projects and we also confirmed our partners with Dr. E so she was aware of who will be working with each other. After we cleared that all up, we briefly went over Archimedes principle and buoyancy. We were reminded that it is because of buoyancy that a steel ship can float. After we discussed that, we were shown two demonstrations online. One of the animations was of a container of water with a weight being dropped down into it and there was a scale to show what happened during the whole thing. That assimilation demonstrated that the weight was being transferred from the top balance to the bottom balance. The other assimilation was a container of water with a "boat" in it and then you added cubes to see how many you could add before it sunk and also you could play with the width and height of the boat to see if that affected anything. Once we were done with these animations, we did an activity in groups of four. We had two beakers, one with a funnel and one without, and a ping-pong ball. We were told to blow air as hard as we could at the ball in the funnel, trying to make it "jump" to the other beaker. This would be a fun activity for my students to do someday!

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