A great set for small groups or individual students to build 2D and 3D shapes Explore geometry using magnetic pieces Models look spectacular on a light table or against a light source. 36 piece set contains 20 squares and 16 triangles. Crystal Mega Mag encourages students to explore geometry and colour at the same time. Pieces are chunky and easy to handle. Due to their polarity, magnets are self-correcting. The coloured side pieces (non clear) join together, but not with the reverse clear side. Squares measure 12 x 12cm (4.72 x 4.72 inches). Product Code 90-1000CRYSTAL Range MegaMag Polydron Age 3 years + Contents 20 Squares and 16 Equilateral Triangles Weight (kg) 1.4 L x W x H (cm) 38 x 28 x 6.5 Type of Packaging Sturdy Reusable Carton Barcode (EAN-13) 5060164537342 Cleaning Method Sterilize with Alcohol Based Sanitizer Piece Count 36