Have you read this book? Its such a fun story based on true events of childhood imaginations and delights with friends that span years. Its part of our Five in a Row fun and I'm enjoying it as much now as I did the first time we read it.
It was my turn to teach co-op this time and having taught it before, it was easy to use my notes to tweak it a bit and plan some fun. We started with a devotion. Then on to a lesson about colors of the Southwest. I used some paint chips for this lesson.
We started by learning about simple machines and what they are.
I had gathered a box full of a variety of items. They took turns pulling out an item and then trying to identify what type of simple machine it was.
The first experiment was on levers and looking at the distribution of books on one end to see how it affected the lever.
Inclined Plane. Does using this really help with the work load? We measured and tested to find out. First they measured the pull on a rubber band holding a sock of marbles when lifting straight up.
Wheel and axle. We tested moving something using rollers. The early Egyptians used something like this while building the pyramids.