2nd Grade EXPO students are learning about simple machines. We have investigated the wedge, screw and today we looked into the lever. Students experimented with how a first class lever works. We investigated how different lengths of levers would effect the load to be lifted.

As students arrived at conclusions about the ratio of lever to weight we decided to push the limits of this investigation. Students were challenged to lift more than twice their own weight on the longest lever. The challenge proved to get the students interested as to what the limits would be for the lever.