After using the included guide to build each kind of simple machine, I turned my children loose with this kit. They took them apart, rearranged, and created complex machines with pulleys, wheel and axle, levers and more. I haven't been able to put the kit away because they ask to play with it every day. I am already planning a fun unit study to do in homeschool all about simple machines. The pieces are a sturdy, thick plastic that have held up well to my 6 children."..." Read more
- Tristan in Ohio