Explore an exciting new method of magnetic construction with Polydron HashMag. The unique shapes in 6 stunning translucent colours are ideal for developing fine motor skills and exploring the construction of 2D nets and 3D models. Polydron HashMag has a colour coding system to help develop an understanding of polarity and is compatible with Magnetic Polydron.Designed for a whole class to use this 72 Piece Class Set contains 36 triangles and 36 squares.Building guide included for inspiration.