TickiT Large Sensory Blocks comprises of 16 large rubberwood blocks containing beads, transparent acrylic, coloured sand and water/glitter filled pockets in 4 different shapes (square, rectangle, triangle and semicircle). Theese blocks will promote observation in the wider sense, as all the shapes follow the same convention of colour and shape. So for example, regardless of the contents of the block the triangles are always green. The combination of smooth wood exterior and the brightly coloured sensory centre makes a fascinating component with a multitude of educational possibilities for use with children of all ages. Allows tactile and sensory exploration. Encourages descriptive language. Develops fine motor skills. Helps with early colour and shape recognition. Rectangle is 140 x 70 x 30mm. Age Suitability:12 months +.