The Invention Convention

My sons third grade class had an Invention Convention where they had to pretend as if they were deserted on an island, and had to use the basic principles of simple machinery to invent something that would help out. Frazier created a dolly named the Hello Dolly using the ideas of screws, wheel and axle, and lever. The purpose of the Hello Dolly would be to help move heavy objects, like firewood, around from one place to another. Here is a slide show of pictures from the big event.