This set includes 72 seashell-shaped pieces in 6 different transparent colors (red, yellow, orange, green, blue and purple) and 6 different textures. It also includes an activity guide. These multicolored, see-through shells are perfect for counting, sorting, patterning, comparing, matching and classifying. Ideal for tactile learners, these shells are a great resource to explore STEM concepts via light panels or sensory bins. Foster fine motor skills as children use these hands-on manipulatives to learn addition, subtraction and symmetry. Made with durable plastic and rounded edges, these shells are the perfect math manipulative for home or classroom learning. Transparent Tactile Shells are packaged in a plastic jar with lid for easy cleanup and storage. Size: 1.3"L x 1.6"W. For ages 18m+.