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Fine motor control activity

Fine motor skill activity – Smashing Moon Rocks!


This activity is sure to bring excitement to your home. Smashing moon rocks is a fine motor activity, so children are working on small muscle movements.

While hitting the moon rocks with the hammer, they are practising controlling their wrists and hands, while also making their muscles stronger! Fine motor skills are very important to work on during the preschool years because it helps prepare children to have better scissor skills and handwriting in the future.



How to Make Moon Rocks

Here is what you will need to make your own moon rocks!

Materials Needed

  • 1 cup flour
  • 1 cup water
  • whisk
  • cotton balls
  • grey paint or food colouring
  • foil
  • cookie sheet
  1. toy hammer
  2. Whisk together the 1 cup of flour with the 1 cup of water.
  3. Add in a small drop of paint to change the mixture to a grey colour.
  4. Dip cotton balls into the mixture and place them onto a cookie sheet lined with foil.
  5. Place into an oven at 300 degrees Fahrenheit for 45 minutes.
  6. (Optional) Lay the completed moon rocks onto another cookie sheet lined with foil and with star stickers.


Show your child the tray full of moon rocks. Invite them to smash the rocks using a hammer. This is great for working on hand-eye coordination!


The rocks will crunch and looked smashed when you hit them with the hammer. It’s so much fun! Another way to use the rocks is to crush them using hands. Invite your child to use their fingers to pull the cotton ball apart. I’m sure your child will think this is interesting and fun!