Oobleck Science: Solid or Liquid?

3.8 based on 176 ratings

What You Need:

  • Newspaper
  • Bowl
  • Cornstarch (1 cup)
  • Water
  • Recyclable plastic tub
  • Food coloring (optional)
  • Old clothes or smock (optional)

What You Do:

  1. Lay the newspaper down to cover your work surface.
  2. Have your child pour 1 cup of cornstarch into the bowl.
  3. Help him add in water slowly, until the mixture is thick (about the consistency of syrup).
  4. Stir a couple of drops of food coloring into the mixture, if your kid wants it to be a certain color.
  5. Encourage him to squeeze the oobleck between his fingers, asking him questions about the experience. Some great examples include: Can you shape the oobleck into a ball? What happens when you squeeze it in your fingers?
  6. Have your child pour the mixture into the plastic tub. What happens?
  7. With your child, experiment with the oobleck. Have him make it into a ball and throw it into the air. Encourage him to leave it out in the sun. Tell him to try to bounce the oobleck. After each experiment, discuss what’s happened with your kid.

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