Amazing Oobleck

Having fun discovering the wonders of food through the activities in the Healthy Eating box? 

Here's more! Make amazing oobleck using just two ingredients which you may already have in your own home!

What you need

1. 2 cups cornstarch 

2. 1 cup water

3. Food colouring (optional)

Step by Step

(If you are adding food colouring, add a few drops into the water and mix well first.)

1. Simply mix 2 cups of cornstarch and one cup of water into a bowl. 

2. Stir to mix until your oobleck is formed.

Play ideas

Apply quick pressure with a spoon or chisel - what do you notice? The cornstarch particles are forced together, making the oobleck behave like a solid. It will feel hard.

You can also roll the oobleck into a ball with your hands. Release your pressure and.. splat! It comes apart like liquid!



Oobleck isn’t a liquid or a solid, it’s a non-Newtonian fluid. 

Making oobleck is a great science experiment to show how changes in pressure can change the properties of some materials. Sort of like how temperature changes the properties of water. 

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