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Have you ever heard of Oobleck? The Dr. Seuss book Bartholomew and the Oobleck gave the name to this fun science experiment. It’s a silly one that inspired the name of the cornstarch and water slime that everyone loves to make. It is a perfect and simple sensory play activity for kids, but it is also a great lesson in science. If you want to know how to make Oobleck you have come to the right place! Read on to get the oobleck recipe you have been looking for.
What is Oobleck?
Oobleck is a is a non-newtonian fluid made with a mixture of cornstarch and water. When you mix the two together it makes the non-newtonian fluid, something that is not really a solid or a liquid. When you apply pressure it will stop moving, get firm and behave like a solid, but when you release the pressure it is gooey and behaves like a liquid. It is a liquid and a solid at once and it is seriously a ton of fun to play with! If you just let your hands sit in the mixture, they will sink in like quicksand. And just like quicksand, the more you move, the harder the mixture gets making you even more stuck! This stuff is perfect for when you are teaching about states of matter (solids, liquids and gasses).
Watch How We Played with Oobleck:
This video will show some of the fun ways we played with our Oobleck mixture! You will see how much fun it really is!
Have you ever wondered how to make Oobleck? Some call it cornstarch slime, but this is so much easier to make than slime! The recipe is super simple to make. You need just two ingredients: Cornstarch and Water.
You need two parts cornstarch to 1 part water. We made ours with 9 cups of cornstarch and 4 1/2 cups of water. You can also add food coloring if you want, but this is totally optional.
Mix it in a big bowl and find a place where messy play is a-OK. We took ours outside so the kids could get as messy as they wanted and be hosed down after.
After a bunch of play, we divided our oobleck out into 4 different bowls and mixed in some coloring. I used liquid watercolors for ours, but food coloring would work just as well!
I have done this a lot of times with my kids, but it always seems to amaze and excite them. It never gets old. The bigger kids remember it well, but my younger kids needed a chance to dig in and get messy. Its always fun to re-make the old classic science projects.
If you make a big enough batch of it, you can even walk on it!!
Just a heads up: you do not want to pour this down the drain. It will clog it up.
Bartholomew and the Oobleck
If you have never read the Dr. Seuss book Bartholomew and the Oobleck, it is worth the read. We always love a good, silly Dr. Seuss book. This one is a Caldecott award winner, so you know it is good! It is about a king who is bored with regular weather and asks his magicians to make something new. Instead of regular rain, oobleck falls from the sky. It rains sticky, gooey oobleck and it makes a huge mess! Bartholomew, a wise page boy, helps solve the problem with just a few simple words.
Want even more Hands-on Learning and Messy Play ideas for Kids?
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