Thursday, February 9, 2012

Valentine's Day Science and Sensory Fun

Have you ever wanted to watch a rock melt? Have you ever wanted to see a liquid crumble? Then you need to get your hands on some cornstarch, and start blurring the lines between liquid and solid.

For this experiment we used an entire 16oz box of corn starch. We added the cornstarch to the mixing bowl a quarter cup at a time, slowly mixing in water until it was well mixed. We ended up using around a cup and a half of water. We used food coloring to dye the water red before adding it to the starch to give it that nice pink color.

This mixture behaves so strangely that you don't really know what you are dealing with. If you hit it, the mixture resists. It feels like smacking something hard and impenetrable. But, if you try to pick it up it just oozes out of your hand.

The girls experimented with scooping it, cutting it, and letting their hands sink in to it then lifting up really fast to pull the tray up with it.

A few words of warning if you are planning to make some corn starch goo:

DON'T dispose of it down the drain. It will clog and really confuse your plumber.

This isn't for the faint of heart. While goo does clean up with just a swipe of a wet rag, it gets everywhere! Just check out what my kitchen looked like afterwards!

In addition to our pink Valentine's day goo, we also have put together a lovely new Valentine's day sensory tub.

This tub contains pink paper "grass", felt hearts, pom poms, and Valentines themed erasers to hunt for.

February is turning out to be a touchy feely kind of a month after all. Thanks for stopping by.


  1. What great, fun things. I've heard of the cornstarch goo before, but have never done it! Maybe that would be a good thing for our snow days this weekend. If you have any posts you'd like a little extra love on, I have a Share & Share hop going on right now. :) Link up to 4 of your favorite posts! Have a great Thursday!

  2. I've been itching to do this. I do have cornstarch in the kitchen...maybe this afternoon! Thanks for the inspiration.

  3. It's called a non-newtonian fluid. there are some great you-tube videos of people running across pools of it, as well as what happens when you put it on a speaker or subwoofer. The following link is a basic explanation of how this kind of substance works. (not that any of that is on birdy's level, but she might like to know it....) (ok, so I'm hoping that at least one of the 'other people's kids' I know is as much of a science geek as I am.)


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