Our edx education® Green-n-Learn® Tactile Shells Activity Set is made from recycled plastic. Tactile shells help children develop their senses in sight and touch. through exploration in sensory play. The shells can be used for all math activities, such as counting, sorting, and pattern making. Make simple maths concepts such as addition, subtraction and multiplication more hands-on and engaging as a visual aid.. This set includes 54 shells in 6 different tactile surfaces and 3 colors and 8 x double-sided activity cards.. Set includes: 54 shells and 8 activity cards. Size:33cm x 13cm x 4.5cm. Age: 18 months+. Product Code: EDX14201