Oobleck sensory play

Oobleck sensory play


Oobleck is a mixture of corn flour and water. These are two ingredients you likely already have in your kitchen! You can also add some food colour to it and make it a little more exciting. If your kids love to play with slime then they will also love Oobleck. This is a calming sensory experience that your child may engage in for long periods of time.


  1. Add 2 cups of corn flour to 1 cup of water to a bowl. Mix the corn flour and water until your oobleck is formed.
  2. Tip: If you would like to colour your oobleck, add food colour to the water and then mix with the corn flour.

  3. If the mixture is too watery and not forming into a solid when you pull the oobleck out of your bowl then add more corn flour. If you find the mixture is not liquid, add a little more water. Just keep experimenting until you get the right consistency.

Promote learning by:

Apply quick pressure with a spoon and this will increase the oobleck’s thickness by forcing the corn flour particles together. It will feel hard and you can even form a ball with your hands. Release the pressure or slowly dip your spoon into the mixture and it will act like water. By moving slowly, the corn flour particles have time to move out of the way.

Ask your child to hit the oobleck with a utensil and observe the utensil bounce back as the oobleck hardens appearing solid. Ask your child why they think this happens.
Move the spoon slowly and it will dip into the oobleck making the particles move away slowly like a liquid. Pick up oobleck and roll it into a ball while maintaining pressure. Then let it go and watch it melt into your hands like magic. How did you make a ball out of liquid? Why does the ball melt away?

Tip: If the oobleck starts to dry-up add a little more water.

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