Glow-in-the-Dark Slime with Preschoolers

SONY DSCThis week, we discovered blacklights and glow-in-the-dark slime!  Needless to say, we had a blast!!

We started by talking about the lights in our “laboratory” and how they help us see everything in the room.  We talked a bit about shadows and darkness.  Next, I brought out my blacklight.

This is a portable blacklight that I purchased at Meijer.  It was about $11 and well worth it!  We can do all kinds of science discoveries with these.  Also, at home, we do glowing baths with this light and glow necklaces, stars, and highlighters.

This is a portable blacklight that I purchased at Meijer. It was about $11 and well worth it! We can do all kinds of science discoveries with these. Also, at home, we do glowing baths with this light and glow necklaces, stars, and highlighters.

I told them about this special light and the kids made predictions as to what would happen if we turned the blacklight on and the white overhead lights off.  We tested out our theories.  The kids loved it.  Their clothes, watches, shoes, and TEETH were all glowing!  We turned the traditional lights back on and got to work creating a glow-in-the dark version of one of our favorite materials- slime.

For the slime, we used a combination of glue (we used clear), Borax, glitter paint, and neon, and glow-in-the-dark paints.  I bought the paints for under a dollar at Jo Ann Fabrics.  I didn't know if just the neon would work or just the glow-in-the dark, so we used both.  I also had baggies, so the kids could take their creations home.

For the slime, we used a combination of glue (we used clear), Borax, glitter paint, and neon, and glow-in-the-dark paints. I bought the paints for under a dollar at Jo Ann Fabrics. I didn’t know if just the neon would work or just the glow-in-the dark, so we used both. I also had baggies, so the kids could take their creations home.

We started by reviewing solids and liquids.  We talked about Borax as being a polymer.  I don’t expect the kids to completely understand everything that we discuss, however I value the introduction to new vocabulary and challenging concepts.  I always feel like kids are able to tuck information away and bring it back out in the future.  So, when they do get to this type of lesson in the future it won’t be new.  Also they will be able to make interesting connections to this learning.  As I was saying, we discussed the job of Borax and I was able to demonstrate its capabilities with our first flop of the class.  We were so excited, we added all of the ingredients together (including warm water).  This is what we ended up with….

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This was a thick mess. It was difficult to stir and wasn’t as fluid as what we were looking for, however, it was a good experiment, and display of the power of our polymer.

The second time, we mixed the glue and paints together.  Next, we dissolved the Borax in warm water.  This step made all of the difference!  We didn’t measure, we added about 3/4 – 1 cup of warm water and a couple tablespoons of Borax.  We stirred the two bowls and then combined them together in one big bowl and stirred.  It didn’t take long for the slime to form.

After the slime formed, we divided it up and played away!  The kids loved bringing it right up to the blacklight.  I made sure that they didn't get too close to it.

After the slime formed, we divided it up and played away! The kids loved bringing it right up to the blacklight. I made sure that they didn’t get too close to it.

When we finished playing (actually time ran out), the kids filled out their science journals.

The children didn't want to put their slime down for a second!  They mostly drew pictures of the slime and the blacklight.  Some of them drew the process of making the slime in the bowls.

The children didn’t want to put their slime down for a second! They mostly drew pictures of the slime and the blacklight. Some of them drew the process of making the slime in the bowls.

I hope that the children had fun with their slime at home over the Thanksgiving break! I can’t wait to do this activity again!

Enjoy!

~Miss Jenny

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