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Making A Bouncy Ball

Rubber bouncy ball colorful shining toy ball
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Have you tried making your own bouncy ball?  Like the recipe for slime but more solid, this ball is ready to play in a whole new way.

Become a scientist and experiment!  Once you have followed the basic recipe, try adding different amounts of the ingredients and see how it affects the outcome.  You may also add new elements, such as glitter and small objects. Be sure to track your results like a real scientist would!  Here is a graph (below) that you can print out to help you get started.

Then, see how your bouncy ball performs on different surfaces like concrete, wood, and carpet.  How does it compare to the balls purchased in a store?

Keep the balls in a zip lock bag, as once they dry out, they will crumble.  Maybe you will be the super scientist that makes them last longer!

You will need

  • Borax (found in laundry section of store)
  • warm water
  • corn starch
  • glue (Elmer’s type, clear or white)
  • 2 small mixing bowls
  • mixing spoon
  • food coloring (optional)


  1. Put ½ cup of warm water into one of the bowls. Add 1 teaspoon of borax powder into the cup. Stir until it is dissolved.
  2. Pour 1 tablespoon of glue into the other cup. Add a few drops of food coloring, if you’d like.
  3. Add one teaspoon of the borax solution you just made and 1 tablespoon of cornstarch to the glue. Do not stir yet.
  4. After 10-15 seconds stir the mixture to completely blend it.
  5. When it becomes too hard to stir, scoop it into the palm of your hand and roll it into a ball. It will become less sticky as you roll it.  Make sure it is round.
  6. If it is still sticky, you can roll it in some cornstarch and it will dry quickly.

Enjoy the bounce!