Picture of Oobleck: The Dr. Seuss Science Experiment
Oobleck is a classic science experiment that's perfect for entertaining both kids and adults. If you haven't seen it in action it's very fascinating stuff and before too long you'll have your hands covered with it, happily making a mess that can be washed away with water.

Oobleck is a non-newtonian fluid. That is, it acts like a liquid when being poured, but like a solid when a force is acting on it. You can grab it and then it will ooze out of your hands. Make enough Oobleck and you can even walk on it!

Oobleck gets its name from the Dr. Seuss book Bartholomew and the Oobleck where a gooey green substance, Oobleck, fell from the sky and wreaked havoc in the kingdom. Here the Oobleck will be made in a bowl and will likely make a mess, but only because you can get carried away playing with it.

Step 1: Materials

Picture of Materials
All you need is corn starch and food coloring and the food coloring is optional.

- 1 cup water
- 1.5-2 cups corn starch
- a few drops of food coloring of your choice

Step 2: Mix it up!

Picture of Mix it up!
Start with the water in a bowl and start adding the corn starch to it. You can use a spoon at first, but pretty quickly you'll be moving on to using your hand to stir it up.

When you're getting close to adding 1.5 cups of the corn starch, start adding it in more slowly and mixing it in with your hand. The goal is to get a consistency where the Oobleck reaches a state that is the liquid and yet solid.

Sometimes you will need more cornstarch. If so, keep adding more than the initial 1.5 cups. If you add too much, just add some water back into it. You will have to play with it to see what feels appropriately weird.
Remove these adsRemove these ads by Signing Up
1-40 of 138Next »

love your stuff

indiaritu20 days ago

great mind , it is really amazing

GrahamAbbey25 days ago

amazing product...

stindler1 month ago

awesome expertiment.. classic

I have heard about this one before. Will have to try it!

Rejanblink2 months ago

old trick .. that still works.. thank you

Cringojames2 months ago

awesome stuff

Davementor2 months ago

great xpertiment

StevenMccan2 months ago

The Lorax Stuff

KanwarSingh2 months ago

impressive stuff :)!!!!!!!

HarryLaine3 months ago

awesome stuff :)#######

indiadumbells3 months ago

great tut

great stuff loved it

hmalik33 months ago

It worked for me and amazed my younger bro that which type of this material is which has both properties of solids and liquids

Alexisanchez4 months ago

wowwww works great

Fantastic work

Clint Dempey4 months ago

Just woww

tamalotes7 months ago

great for kids.

Using a speaker/subwoofer is a great addition.

I used an Android app in order to generate frequencies. Works best between 28 and 35Hz (in my case).

I am sure will depend on the type of tray being used.

joshtrenser7 months ago

Now this is really cool

azharz7 months ago

Made this before but recalled some memories. Thanks fungus amungus. And a awesome instructable.

bgipson17 months ago
Mythbuster's used plain old
Corn starch and water did some really wild things running on it
craftreporter7 months ago

looks slimy!

Kacheeker4 years ago
Oh I have made this before it is so cool! I really like to make tie dye goop. :D

Reminds me of my old Tie Dye Shirt :D

cesperon9 months ago

Wouldn't it be easier to add the food coloring to the water before mixing the water & corn starch?

This looks like so much fun~

Kelly021 year ago
Amazing video!
Oh man, I love this! Amazing work
JensonBut1 year ago
Those instructions are amazing and extremlly useful! I made this with my science class, but never that much. Wowzer.
rsimpson31 year ago
Thank you so much for sharing this! I did this project in school- many years ago and forgot how to do it. Now that I have a son I have been wanting to share this with him.
MikeCicc2 years ago
Those videos are amazing. I made this with my science class, but never that much. Wowzer.
Foaly75 years ago
If one were to make a bunch of this in an aboveground pool, would they have to use a big stick to mix it?
yes but i think they would use a spade, or a mechanical arm
(removed by author or community request)
I'll have you know two things: First, i am well beyond two years of age, and second it is an honest question.
mg0930mg5 years ago
Some little person did this at my brother's science fair. I was like OOBLECK! People stared at me, nothing unusual. Good instructable, the stuff feels really weird, is it liquid or solid?
It is a mixture of both a liquid and solid. Whan force is put on it, it acts as a solid, when let loose it acts as a liquid!
ilpug mg0930mg3 years ago
Neither! And both! that's the beauty of Non-Newtonian substances!
ilpug3 years ago
I wonder if someone could take a tub of this stuff and hold it in front of a woofer to make it solidify, and then invert the tub and have it not fall out? hmm.
1-40 of 138Next »