Children will have fun with this construction and early learning activity set. Ideal for developing fine motor skills and creative design. How many pebbles can you stack before they topple over? Encourage visual perception, sorting, counting, sequencing, stacking, and more! The wonderful tactile experience of the smooth, rubbery pebbles in six different colors will delight the senses. Details: Rainbow Pebbles are so tactile, colorful and aesthetic, children will want to play with them right away! Use for a wide variety of activities from fun creative design and sensory activities to early math development! Use Rainbow Pebbles for therapy and rehabilitation to improve cognitive and motor skills for all ages Activity cards encourage building structures, sorting, counting, sequencing and imaginative design For ages 3 and up Contents: 48 plastic pebbles in 4 sizes and 6 colors (pebbles measures largest 2.25" x 1.25" x 0.5" to smallest 1" x 0.5" x 0.25") 12 double-sided full-color activity cards (8.5" x 11.75")