Stir the gelatin into the hot water until it’s dissolved. Mix in the glycerin and shampoo, gently stirring. The solution will gel as it cools.
Set out one bowl for each color of paint you will use. Pour one cup of solution into each bowl, then add a teaspoon of tempera paint to each. Stir. Have your grandchild select a color and blow a bubble toward you. Your job is to "catch" the bubble, so it pops on the paper. The bursting bubble creates a unique splatter. Layer colors to make cool patterns. Switch roles and have fun seeing what designs you can create.
Pour water into the glass until it is three quarters full. Add about 1/2 inch of oil to the water. It will float because it is less dense than water. Sprinkle salt into the glass and see what happens. Cool, right? Think of other powdery substances you can substitute for salt in the experiment — dirt, flour, sugar, etc. Is the effect the same, or does something different happen?
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