Things You'll Need
Instructions
Pour five pounds of cornstarch into a large plastic tub, such as a plastic storage container. You can buy cornstarch in one pound boxes at any grocery store.
Pour seven cups of cold water in with the cornstarch and mix with your hands until it is smooth and free of lumps.
Sift any small pebbles out of the sand with a colander or strainer if you can't find fine play sand. The sand should feel smooth in your hands without any coarse rocks.
Add one pound of fine sand to the cornstarch mixture and use your hands to mix it.
Mix in the rest of the sand one pound at a time until all of the sand is incorporated into the cornstarch mixture. The sand should be just barely wet.
Add additional water to moisten the sand if needed.
Divide one-pound portions of the moon sand into smaller buckets with lids.
Add drops of food coloring to change the color and mix until all the sand is colored. This is an excellent activity to teach kids about mixing colors to create new colors.
Store with a tight-fitting lid between uses.
Add a small amount of water to revive the moon sand if it seems dry the next time you play with it.