Smithsonian Rock Tumbler REIMA and they introduce science concepts

and they introduce science concepts using a friendly lift-the-flap format

ready to take the challenge even further

especially at bedtime or anytime when exposure to wet diapers may be prolonged

• Teaches colors

Discover fascinating facts about your baby’s development

Smithsonian Rock Tumbler REIMA and they introduce science conceptsTurn rough rocks into beautiful, polished stones that you can use to make charms, bracelets, keychains, and more. Begin by tumbling the included rocks in a barrel with water and grit, then repeat this cycle using progressively finer grits. In just weeks, the Smithsonian Rock Tumbler mimics the process that takes oceans thousands of years! Turn rough rocks into beautiful, polished stones! Includes accessories to make charms, bracelets, and keychains.