Shake it, Move it!, I Spy, and Number Hunt help develop students’ understanding of number concepts, shapes, and vocabulary while actively engaged in their learning. Activities can be adapted to review skills that need reinforcement in any subject area. Pebbles are not included. You can use many types of objects you have around your school or home. If you want to buy the pebbles in the picture, visit Amazon.com (not an affiliate link) and enjoy!