Wag the Dog!

Yesterday we started talking about levers and why we need them and use them. A lever is a rigid bar that moves around a fixed point. When you push or pull one part of the lever you make a push or pull on the another part of the lever in the opposite direction.

To demonstrate this we made dogs whose tails wag and tongues stick out depending on whether we push or pull the lever. It was great! We named our dogs and had lots of fun playing with them.

Now we have them on display outside our classroom door.