Tunnels
The children were interested in tunnels.
We assigned the task of making a tunnel that could hold the most weight.The children could use any materials that they wanted to create their tunnels. They designed, built, and then tested several times adapting their designs and materials. The official weigh off came and the children were so excited. The families came and participated during the weigh off. We did not bring enough weights. Several tunnels was still standing after 170lbs was added to the top.