Last week, the kids and I went to school supply store Scholar’s Choice (cool store, by the way). We were there to pick up a science experiment book and ended up with a science curriculum book, some chore charts, a mini whiteboard and whiteboard markers, and a couple other things that have since been regularly used and gone missing.
One of the things we got was an experiment kit about making a rainbow tube. It was one of the few that fit my kids’ age group, and because I was wondering how exactly one would make a rainbow tube, I bought it.
Apparently you need water. And these little tablet things that dye the water. And some water-absorbing crystals.
Yep. Water-absorbing crystals. I know, right?
Anyway. You fill up three plastic cups (I used paper because I didn’t have plastic cups at home) with water, though the package doesn’t tell you exactly how much water you need. Then you drop in the dye tablets to change the water’s color. There are three tablets — blue, red, and yellow — one for each cup.
Once the tablets stop fizzing, you drop in equal amounts of the crystals in each cup.
And then you wait.