Earth Day Slime

Looking for a creative Earth Day project? Try this homemade Earth Day STEM project. This slime will wow your kids and get their young minds interested in the science behind everything around them.


  • 6 oz of clear “school glue”
  • 1½ tablespoon of baking soda
  • 1½ tablespoon contact lens solution
  • Mixing bowl
  • Spoon or other utensil for mixing
  • Measuring spoons
  • Blue and green glitter or food coloring
  • Liquid watercolors are an acceptable alternative to glitter or food coloring

Step 1:

First, empty 6 oz of clear school glue into bowl.

Step 2:

Then add 1½ tablespoon of baking soda to the bowl.

Step 3:

After that, add 1½ tablespoon of contact lens solution.

Step 4:

Add as much glitter to your mixture as you’d like—the more glitter the better.

Step 5:

Start mixing everything together with a spoon until it solidifies, then knead it together with your hands until it’s recognizably slimy.

Step 6:

Once it’s taken shape, you and your kids can have ooey-gooey fun as you discuss the science behind your project and the environment. Don’t forget to keep your slime off furniture and store it in a plastic storage container.