These large Sensory Stones are designed to enable children to have sensory experiences by experimenting with the raised and indented shapes and patterns. Cast from a durable mix of resin and real stone, they can be used on their own or as part of a wider sensory experience. They can also be used to make imprints in sand or dough, pattern matching activities and mark making with paint. Helps children to explore texture. Promotes mathematical language. Contents:. Four raised designs - circles, dots, wavy lines and a grid. Four indented designs - circles, lines, zigzags and a spiral. Teacher's guide. Size: 75mm. Age Suitability: 18 Months +.