Kindergarten worked on creating foil boats that would hold as many marbles as possible. This lesson really drilled in the idea of testing, redesigning, and retesting. Each student probably made 3-4 modifications, retesting each time to see how many more marbles their design would hold. This also helped encourage counting and writing numbers, as they then kept a class tally on the board as to how many marbles each persons boat held. This was such a low materials activity- All we needed was foil, marbles, popsicle sticks (optional), and a large bucket of water.