Recipe for goop oobleck :: Halloween messy play

Try this easy recipe for goop, also know as oobleck, for some glorious Halloween messy play.

 

 

Recipe for goop oobleck :: Halloween messy play

Goop, also known as oobleck, is a really interesting material to play with. It’s neither a liquid nor a solid but rather a non-Newtonian fluid. At times it looks and feels like a liquid but, if you reach in and grab a handful, you can feel it like a solid in your hand. It makes for a great playful science exploration.

 

How to make goop

You only need two ingredients to make goop: cornstarch (as it’s known in the US) / corn flour (as it’s know in the UK) and water.

 

 

Take a plastic container and fill it with some cornstarch / corn flour.

 

 

Next pour in your water – with some orange or green food colouring added to give it a Halloween-theme. How much water you add will determine the thickness of your goo Start with a little water, stirring as your pour it in. It’s easier to add more water, if needed, that to keep mixing in more cornstarch / corn flour.

 

 

Then you are ready to play. Goop has such an amazing consistency. At time it’s a liquid, and you can have lots of fun pouring it and letting it trickle through your fingers. See what happens when you sieve it! Then, when you try grabbing some or punching the mixture, you’ll notice how solid it feels.

 

 

Be aware that goop is very messy. Make sure surfaces are covered and wear an apron while playing. Then you can enjoy some glorious, goopy fun!

 

 

When you’ve finished playing, remember that the recipe contains flour and so you should not pour it down the sink to dispose of it or it might block your drain. It will keep in a plastic bottle or container with a lid if you want to play with it again in the next day or so, but otherwise it could be composted.