Have you ever played with oobleck? Maybe you know the substance by another name, gak. Oobleck/gak is one of the most interesting sensory materials there is! It is made with only two ingredients- cornstarch and water (and a little bit of food coloring if you’d like). This simple recipe leads to loads of sensory playtime for toddlers and preschoolers alike!
In the science world, oobleck is knows as a non-newtonian fluid. What that means is it acts as both a solid and a liquid. When you apply pressure to the substance, it becomes solid. Then when you loosen up on the substance, it flows like a liquid. It’s truly a unique substance that you just have to feel to appreciate! It challenges students’ preconceived notions about how a liquid should behave and really keeps their interest!
How to Make Oobleck
1 cup of cornstarch
1/2 cup of water
2 drops of green food coloring (optional)
Container to hold the oobleck
Spoons, kitchen tools to play with
Toys (like these people figurines)
Mix ingredients until well-combined. Using hands is a much easier way to mix the oobleck – so dig it!
For this oobleck activity, I chose to color it green and include people figurines so it became an extension to the book Bartholomew and the Oobleck by Dr. Seuss. In the story, the oobleck rains down on several different people. You can recall some of the facts of the story with your child as they play by asking questions regarding who the oobleck rained down on and how they reacted to it. Your child may even choose to act out some of the scenes with their toys! These are great reading comprehension strategies that you are teaching through play!
More activities you might like:3D Shapes Free Printable
This is a great activity to do any time of year, but particularly good on March 2nd- Dr. Seuss’ birthday and Read Across America day! Wouldn’t it be fun to read the book, do the activity, AND connect the experience to a fun celebration like the author’s birthday?
Try these fun activities!