This picture shows one full rotation of a wheel as it rolls over a rug on the floor. Try it with your toy.

- If the wheel makes one full rotation, how far will your toy go? Answer
- If the wheel makes three full rotations, how far will your toy go? Answer
- You make a toy that is larger than your original toy. The radius of the wheels for the new toy is twice as long as the wheel of the original toy. Figure out how far your new toy will go with one full rotation of its wheels. Think about how you answered question 1 to help you. Answer
- You want to make a toy with wheels that can go about 15 cm with one full rotation of the wheels. Figure out the size of the wheels you should make. Answer