What is the Crystal MegaMag Polydron Set?

The Crystal MegaMag Polydron Set (code 90-1000CRYSTAL) is a 36-piece magnetic construction kit from Polydron for children aged 3 years and over. It contains 20 squares measuring 12 x 12 cm and 16 equilateral triangles. Children use the chunky, easy-to-handle pieces to build 2D and 3D shapes.

How does Crystal MegaMag help children learn about shape and colour?

Crystal MegaMag pieces have clear and coloured sides. The magnets are self-correcting: the coloured sides join together, but they will not join to the clear sides. With 20 squares and 16 triangles, children can make cubes, pyramids, prisms and flat nets. Polydron notes that models look striking on a light table or held up to a light source, so the set links geometry with colour exploration. A Starter Set model guide is available to download.

For schools

• Supports the maths curriculum on 2D and 3D shape, faces, edges and nets in EYFS and KS1, with use in KS2.
• Designed for small groups or individual pupils, so it suits focused group work and Quality First Teaching.
• Works on a light table in early years settings for shape and colour investigations.
• Large pieces are easy to handle in SEND provision and intervention groups.

For parents and home use

• Magnetic pieces click together quickly, so young children see results straight away.
• Self-correcting magnets reduce frustration and build confidence.
• Holding models up to a window adds colour and light to open-ended play.
• Chunky pieces give fine motor practice from age 3.

Supporting learners with SEND and learning differences

Hands-on, magnetic construction gives many learners with SEND and learning differences a concrete way into shape and space. The large pieces are easy to see and hold, and the self-correcting magnets give instant feedback. Clear and coloured faces add a strong visual element, especially on a light table. Children can fold a flat net into a 3D shape and open it out again, which makes abstract maths ideas visible and repeatable.

The Crystal MegaMag Polydron Set is available to order from The Dyslexia Shop, a UK specialist in resources for SEND and learning differences, for use in the classroom or at home.

• Contents: 20 squares and 16 equilateral triangles
• Total pieces: 36
• Square size: 12 x 12 cm
• Magnetic: Yes, self-correcting; coloured sides join together but not to the clear sides
• Colours: Clear and coloured sides
• Material: BPA free
• Packaging: Sturdy reusable carton, recyclable
• Packed dimensions (L x W x H): 38 x 28 x 6.5 cm
• Weight: 1.4 kg
• Age: 3 years and over
• Care: Clean by sterilising with an alcohol-based sanitiser
• Brand: Polydron (MegaMag Polydron range)
• Polydron product code: 90-1000CRYSTAL
• Barcode (EAN-13): 5060164537342

• Shape and light together. Clear and coloured sides make models stand out on a light table or window.
• Self-correcting magnets. Coloured sides join only to coloured sides, so shapes come together the right way.
• Large, chunky pieces. 12 x 12 cm squares are easy for small hands to hold and for groups to see.
• Trusted UK supplier. Supplied by The Dyslexia Shop, a UK specialist in resources for SEND and learning differences.

What's in the Box

• 20 x squares (12 x 12 cm)
• 16 x equilateral triangles

A Starter Set model guide is available to download free from Polydron.

Care and Cleaning

Clean by sterilising with an alcohol-based sanitiser.

Safety and Age Suitability

Suitable for ages 3 years and over. Warning: this product contains magnets. Swallowed or inhaled magnets can cause serious or fatal injury, including if they attach to each other or to metal inside the body. Seek immediate medical help if magnets are swallowed or inhaled.

Delivery and Returns

Standard UK delivery applies. See our Delivery and Returns page for full details.

• What is the Crystal MegaMag Polydron Set?
  The Crystal MegaMag Polydron Set is a 36-piece magnetic construction kit with clear and coloured sides. Made by Polydron, it contains 20 squares measuring 12 x 12 cm and 16 equilateral triangles. Children build 2D and 3D shapes, and the models look striking on a light table or held up to a light source.
• What age is Crystal MegaMag suitable for?
  Crystal MegaMag is suitable for children aged 3 years and over. The chunky 12 x 12 cm pieces are easy for young children to hold and join. Nursery and reception children can make simple shapes and explore colour, while older primary pupils can build nets, prisms and pyramids and describe their properties.
• How can schools use Crystal MegaMag Polydron?
  Schools use Crystal MegaMag to teach 2D and 3D shape, nets and shape properties while exploring colour and light. Polydron designed the set for small groups or individual pupils. Placing finished models on a light table makes faces and edges easy to see, which supports discussion during group work and shared teaching.
• Is Crystal MegaMag good for play at home?
  Yes, Crystal MegaMag gives children an open-ended, visual way to explore shape at home. The magnetic pieces click together easily, and the self-correcting magnets mean children can build without constant help. Holding models up to a sunny window shows off the clear and coloured faces and adds an extra element to play.
• Is it suitable for children with SEND or learning differences?
  Yes, many children with SEND and learning differences benefit from large, hands-on magnetic resources like Crystal MegaMag. The pieces are easy to see and hold, the magnets give instant feedback, and the clear and coloured faces add strong visual interest. Children can build and unfold real shapes at their own pace to understand geometry.
• What comes in the Crystal MegaMag Polydron Set?
  The Crystal MegaMag Polydron Set contains 36 magnetic pieces: 20 squares and 16 equilateral triangles. Each square measures 12 x 12 cm. The set comes in a sturdy, reusable carton measuring 38 x 28 x 6.5 cm and weighs 1.4 kg. A Starter Set model guide can be downloaded free from Polydron.
• What is the difference between Crystal MegaMag and MegaMag Polydron?
  Both sets contain 20 squares and 16 equilateral triangles with self-correcting magnets. On Crystal MegaMag, the coloured sides join together but not with the clear sides, so models are partly see-through and work well on a light table. The standard MegaMag Polydron Set has coloured and white sides instead of clear ones.