Moon Rock Science Experiment for Preschoolers

Mix up science experiments with sensory explorations to introduce your preschooler to STEM.

Our kids love getting their hands dirty so we made a point to include hands-on STEM activities into the Moon themed unit.

We cooked up this simple science experiment using ingredients from our kitchen to make moon rocks!

moon rocks science experiment for preschoolers blog image


  • 2 cups baking soda
  • 1/8 cup water
  • Glitter
    • as you can see we didn’t use glitter because well…glitter ?  but you do you boo
  • Black food coloring
    • We let the girls choose their own colors


  • Mix baking soda and glitter together
  • Add water
  • Add food coloring
  • Form mixture into rock shapes
  • Let rocks sit overnight
moon rocks science experiment for kids_montessori blog image


  • Prepare your life for GOO
  • Vinegar in a small bowl
  • Transfer vinegar with syringes, teaspoons, droppers
  • Play

What you can not hear in the images is the whispered – wow’s – I will have to get the video up soon.

My eyes widened as the little one decided to just dump the whole rock into the vinegar cup. Fearing the mess :cringe: the oldest thinks hey, that’s a great idea – DUMP!

Ya’ll, it was so easy to clean up!

Don’t even sweat the mess. Encourage it!

Considering the moon rocks are water, baking powder and vinegar – whose dining table doesn’t need a deep clean?