Tuesday, September 8, 2009

How to make Troll Bogeys aka green slime!


Today was the "official" start of our homeschool year. Granted,we school to a certain extent year round, but today was the day we hopped back into the more serious curriculum. I promised myself and the Monkey Man that we would have hands-on science experiments at least once or twice a week to make up for our lost science co-op. Needless to say, I have been scouring the internet and science books looking for age appropriate projects we can do with household items. Last week I stumbled across a video of how to make phosphorescent slime. OK, phosphorescence would have been mucho cool, but you just can't find Zinc sulfide at the local HEB, so we had to settle for neon food coloring! If you are so inclined to make slime with your kid... here's the recipe:

Ingredients:
1 cup water soluble glue (We found a big container of non-toxic, plain white glue at Hobby Lobby)
water
food coloring
4 tsp. Borax

What to do:
1. Get two mixing bowls. In the first bowl, mix 3/4 cup warm water with 1 cup of glue and some food coloring until you get the desired color.
2. In the second bowl (which should be large enough to house both mixtures) mix 4 tsp. borax with 1 1/3 cup of warm water.
3. Pour the glue mixture into the borax mixture but DON'T STIR IT!
4. Let it sit for about a minute or so until it congeals, then let your little scientist lift it out of the bowl.

5. You now officially have slime, or bonafide troll bogeys! You can store this mixture in a ziploc bag. I'm not sure of how long it will last though. We'll see!
6. If your slime needs to be more slimy, add a bit more glue. If your slime is too sticky add a bit of the borax mixture and work in. The consistency seemed to change the more we played with it. So I added borax mixture several times and at the end before we stored it, I added a smidge more of the borax mixture, just to keep it slick.

The Monkey Man has enjoyed this immensely! If it's green, looks like boogers and makes farting noises, it's ALL GOOD! Enjoy!

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