The Power to Change.

Today we learned that objects can be classified differently based on how they are used. We looked at a clothespin and saw that when we pinch it open , it is a class 1 lever. The effort is where we pinch it, the fulcrum is the spring in the middle, and the load was the clothespin. When it holds something, like a piece of paper, it is a class 3 lever. Now, the fulcrum is on the end, the effort(the metal bar across the top) is in the middle and the load is the paper. We also made statements about what we've learned so far about levers. Our data tells us that the closer the load is to the fulcrum, the less effort needed to lift it. Tomorrow we will watch an episode of Wired Science.