18 months & up. This set of 16 river rocks has a smooth and pleasing texture that invites children to engage in one of the many activities listed in the set of included STEM activity cards. Children can stack, sort, use at the water table and more! Children will build a strong foundation in basic science, technology, engineering, and math skills. Largest river rock measures 4 1/2".
Sold by Gryphon House, Inc.
Shipped by Kaplan Early Learning Company