How to Make Goop

by rachelle · 20 comments

Making Goop is one of the best things I’ve learned how to do as a parent. Have you tried it? The recipe is simple and children are riveted by the magic of this weird substance.

Goop, better known as Oobleck (named for a slime in Dr. Seuss’ book Bartholomew and the Oobleck ) is a fun material to play with: At one moment it’s a solid, and at the next it’s a liquid…it’s unbelievably silly to play with, and I’ve witnessed adults get lost in the strange sensation of its texture. For my science friends out there, this is a dilatant material, which is one that changes its properties in reaction to external stimuli. We don’t have the Dr. Seuss book (yet!), but I imagine it would be fun to read the book in conjunction with this activity.

I set this corn starch exploration up as a 3-part activity, so that my daughter could experience the medium in multiple ways.

Ingredients

  • Big tub for mixing — I used an under-the-bed storage container. Contains the mess well so my child can play unencumbered by my tidy concerns
  • Cornstarch (I used a 16 oz. container)
  • Water (about one cup…add as you go)
  • Spoons, little bowls, toys for playing, scooping, and filling

Part 1

I placed the jar of corn starch in the tub, alongside a spoon and a couple small bowls. I expected my daughter to pour the whole tub of corn starch out, but she carefully scooped it from the container spoonful by spoonful. This took a while, as she was wholly invested in the process of measuring and then pouring. Once playing with dry corn starch ran its course…

Part 2

We added water. I gave her just a bit at a time, so she could enjoy the process of mixing it in. Ultimately, the cornstarch:water ratio is about 2:1.  And as we went along, we chatted about what it felt like in our hands, if it was easy/hard to stir, and what we were doing. And once she seemed to have her fill of playing with this funny material…

Part 3

We added a few drops of liquid watercolor to the Oobleck (food coloring would also work), which she swirled around and mixed up. She was really interested in dropping the color into the mixture, but stirring it up barely sustained her interest. After focused play with the Oobleck for the last 30 minutes, she seemed to have had enough…ready to move on to the next big thing.

If you try this (or already have it under your belt), I’d love to hear from you!

{ 16 comments… read them below or add one }

amy

Oh, how funny. I almost did this with my toddler last week (there’s a nice activity involving food coloring in one of the books I own), but we did something else instead. It’s in the back of my mind, though.

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rachelle

There are so many possibilities with food coloring…I think it’s a secret staple of parenting! It’s just too bad that they still make the bottles so tiny.

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Jillian

I haven’t done this one for a while, it is so much fun. Great idea to let her mix the ingredients! Guess what we’re doing today? hee hee

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rachelle

Have fun, Jillian! And feel free to share photos on the Facebook page.

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danielle

fabulous! and if after mixing food coloring we add flour-dont we have playdough. oh yah, you have to heat the mixture. why not.
I’ll try it.

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rachelle

I love where this is going…it’s an art experiment for kids and mom! Please update me on how this turns out.

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Aude

Yes, I have everything on hand! We are trying this morning! ;-)

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rachelle

Isn’t it nice to do activities that don’t require a lot of extra stuff? Enjoy!

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Steph at Modern Parents Messy Kids

Thanks for this – I love messy fun!

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rachelle

If I want to keep my child happy, messy is pretty much unavoidable these days. :)

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Teacher Tom

When we make it, we’re mixing up a huge classroom sized batch and keep it for an entire week. The challenge is that the corn starch and water tend to separate overnight and it’s a major chore to remix it in the morning, but worth it. The kids are usually crazy for it for a couple days and then the adults take over for the second half of the week!

I’ve heard this substance described as an anti-Newtonian product because when you try to splash it, there is not “equal and opposite reaction.”

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rachelle

I’ve seen adults go ga-ga over this stuff, too. Maybe those of us who never played with this substance as kids are making up for it now :) I also came across the anti-Newtonian point, and I can see why!

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allie

You know, I have to say that I appreciate you having that makeshift sensory table in your home – its nice to see how often you use it, and how engaged your daughter is. more exciting than TV and other screen time for sure. This might be in our classroom sensory table soon!

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rachelle

Our little “sensory table” has been one of the best purchases! We had too many spills out of little bowls before I realized I could steal a page out of the Preschool Teachers’ Book of Tricks.

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Hanicka

We loved goop so much that I wrote about it in my blog, http://www.speckledmouse.blogspot.com. I love your blog. Keep up the great ideas.

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meri cherry

I just did this today with my 20 month old. It was super messy and so much fun. Equally fun for me. What an incredible reaction. I kept telling my husband to come over and look. It’s wild how it goes from solid to liquid over and over so quickly. Anyway, thanks so much for the great directions. Love your blog! Meri

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