Large hardwood blocks containing beads, transparent acrylic, coloured sand and water/glitter filled pockets in 4 different shapes (Square, Rectangle, Triangle & Semicircle). The Sensory Blocks will promote observation in the wider sense, as all the shapes follow the same convention of colour and shape. The combination of smooth hardwood exterior and the brightly coloured sensory centre makes a fascinating component with a range of educational uses with children of all ages. Rectangle measures:140 x 70 x 40mm. Can be used with Light Panel (item code 152714). Set of 16.