Sparkling colour glitter shapes in 7 colours. Each colour includes 3 versions of a polygon: irregular and regular ideal for understanding simple geometry principles.The shapes are made from 3mm acrylic and can be used on a light panel and each one comes with a 2.5mm hole at the top balance point so they can be strung up against a window or outdoors to create fascinating colour shape shadows.They are the ideal resource for learning about shape names and mathematical terms such as side point curve inside flat solid angle and symmetry. Size of circle: 100mm diameter.Pack of 21.Age Suitability: 3 years+.