BRIGHT COLORS AND WONDERFUL TO TOUCH -- These lightweight, colorful stones have immediate visual appeal plus their warm, smooth surface makes them a wonderfully tactile early math resource. Children will be fascinated by the pebbles' bright colors, odd shapes and warm feel which make stacking even more fun. | TEACH STEM -- These plastic pebbles are great for stacking and developing fine motor skills. Use the multiple colored pebbles to make artistic designs or teach children counting and sorting exercises. | AN EARLY MATH MANIPULATIVE -- Young minds will love this hands-on teaching aid in learning how to count, add and subtract. | DEVELOP LANGUAGE AND DESCRIPTIVE SKILLS -- The vibrant colors and varying sizes of the pebbles inspire kids to practice their adjectives and talk about their designs. | AWARD WINNING DESIGN -- Rainbow Pebbles was Learning Magazine 2018 Preschool Teachers' Choices Award winner and Till wig Toy Awards Top Fun Award winner. | SUITS ALL AGES -- The versatility of this teaching aid ensures that students from preschool to kindergarten and up will learn from these colorful shapes. | CONVENIENT STORAGE -- Packaged in a durable plastic storage case for easy clean up, ensuring of the colorful stacking plastic stones are lost. This also teaches preschoolers and kindergarten students the value of organization. | GREAT VALUE -- 20 double-sided activity cards are included to show colorful designs and ways to stack the pebbles. Use as a teaching aid to assist child creativity.