Thursday, October 7, 2010

Snail Sleds

We did a really fun project yesterday in 4-H that I wanted to tell you about. This was thanks to one of our more scientific club leaders, who organized a way for the kids to study the concept of proportionate strength. First, they all gave their predictions about how much weight they thought a snail would be able to's own weight, two times its own weight, four times, etc. Then, they made little paper "sleds" out of index cards with a string attached and taped them to the snail's shell. They put out little pieces of lettuce as an enticement for the snail to start moving, then began adding pennies to the sled. In the end, the strongest snail was able to pull over 60 times its own body weight. Amazing!!