Second graders learned about levers in the garden in October. First, they made levers in the classroom using rulers for levers and rocks and erasers for pivots. In the garden, students examined different tools to see which ones might be levers. They tried to tools and checked to see which ones have pivots and could be used to lift or apply pressure. Garden levers, they concluded, include shovels and spades, scissors and clippers (double levers joined in the middle), sometimes hoes and other raking tools, and hammers.
Second Graders and Simple Machines in the Garden November 18, 2009