I cut the sides off the styrofoam balls we were using for our race to show Jelly Bean and Jumping Bean that a circle is the center of a ball. This circle looked a lot like a wheel.
After some questioning on how we can roll the wheels, putting an axle on was suggested.
An axle on one wheel just did not work. Oops, it tipped right over!
- 2 styrofoam balls found at craft stores (ours were 5 inches in diameter)
- pencil or stick for axle
- serrated knife for parents to cut off the sides
- Child will roll the styrofoam ball from a start point to an end point to see that the ball does not roll in a straight line. We made a game out of it and raced around a chair back to the starting point.
- Parent will cut off each side of two styrofoam balls leaving the center of each as the wheel.
- Poke the pencil through the center of the wheel acting as the axle.
- Roll the single wheel and axle and discuss why the wheel does not move far.
- Place another wheel on the opposite side of the axle.
- Roll the wheel and axle again and discuss that with two wheels, it moves easier and in a straight line.