You will need
Ingredients: borax, cornstarch, white glue & water.
Balls have been toys practically forever, but the bouncing ball is a more recent innovation. Bouncing balls were originally made of natural rubber, though now bouncing balls can be made of plastics and other polymers or even treated leather.
Make a Bouncing Polymer Ball You can use chemistry to make your own bouncing ball. Once you understand the basic technique, you can alter the recipe for the ball to see how the chemical composition affects the bounciness of the ball, as well as other characteristics.
Explore the awesome world of chemistry for kids with our range of fun in the lessons “Design Squad”.