What is the Original Crystal Polydron Class Set?

The Original Crystal Polydron Class Set (code 10-3031CRYSTAL) is a 184-piece translucent construction kit from Polydron for children aged 4 and over. It contains 100 equilateral triangles, 40 squares, 24 pentagons and 20 hexagons, plus an exploring booklet. Polydron designed the set for whole-class use, and the pieces are made from tough engineering grade polycarbonate.

What can children build with the Crystal Polydron Class Set?

With four shapes, children can make 2D patterns and 3D models such as cubes, tetrahedrons and dodecahedrons. The see-through pieces let them look inside solid structures and understand the shape and space within. Each square side measures 7.5 cm. The pieces come in red, yellow, blue, green and clear, and Polydron recommends using them on a light table or against a light source to explore light and colour while studying geometry.

For schools

• 184 pieces in four shapes support whole-class and group work on 2D and 3D shape.
• Covers nets, faces, edges and vertices at KS1 and KS2, with extension work for older pupils.
• Links maths and science through light table work on colour and transparency.
• Provides concrete resources for Quality First Teaching and SEND provision.
• Dishwasher safe at 70°C for straightforward cleaning between groups.

For parents and home use

• Gives siblings or friends enough pieces to build side by side.
• Hexagons add more model options for confident young builders.
• Joining pieces builds fine motor control through play.
• The exploring booklet gives parents simple starting points.

Supporting learners with SEND and learning differences

Hands-on construction helps many learners with SEND and learning differences make sense of maths ideas that are hard to picture on paper. Translucent pieces let children see the back faces and hidden edges of a solid, so counting properties becomes a visual task rather than a memory task. The bright colours give clear cues, especially on a light table. Snapping pieces together supports fine motor practice, and building a net then folding it shows the link between 2D and 3D shape.

The Original Crystal Polydron Class Set is available to order from The Dyslexia Shop, a UK specialist in resources for SEND and learning differences, for classrooms, intervention rooms and homes.

• Contents: 100 equilateral triangles, 40 squares, 24 pentagons, 20 hexagons and an exploring booklet
• Total pieces: 184
• Square side length: 7.5 cm
• Colours: Red, yellow, blue, green and clear
• Material: Engineering grade polycarbonate, BPA free and 100% recyclable, in a recyclable carton
• Dimensions (L x W x H): 43 x 31 x 8 cm
• Weight: 3.88 kg
• Age: 4 years and over
• Use: Designed for whole-class use; suitable for a light table or against a light source
• Care: Dishwasher safe at 70°C
• Brand: Polydron (Original Crystal Polydron range)
• Polydron product code: 10-3031CRYSTAL
• Barcode (EAN-13): 5060164536680

• Sized for a class. 184 pieces in four shapes let a whole group build at the same time.
• Shape meets light. Translucent red, yellow, blue, green and clear pieces bring geometry to the light table.
• Tough and washable. Engineering grade polycarbonate pieces are dishwasher safe at 70°C.
• Trusted UK supplier. Supplied by The Dyslexia Shop, a UK specialist in resources for SEND and learning differences.

What's in the Box

• 100 x equilateral triangles
• 40 x squares (7.5 cm sides)
• 24 x pentagons
• 20 x hexagons
• 1 x exploring booklet

Care and Cleaning

Dishwasher safe at 70°C.

Safety and Age Suitability

Suitable for ages 4 years and over.

Delivery and Returns

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

• What is the Original Crystal Polydron Class Set?
  The Original Crystal Polydron Class Set is a 184-piece translucent shape construction kit made by Polydron for whole-class use. It contains 100 equilateral triangles, 40 squares, 24 pentagons and 20 hexagons in red, yellow, blue, green and clear, plus an exploring booklet. Children build 2D patterns and 3D models they can see inside.
• What age is the Crystal Polydron Class Set suitable for?
  The Crystal Polydron Class Set is suitable for children aged 4 years and over. Younger children can make colourful flat patterns, while older pupils can build nets and solids such as cubes, tetrahedrons and dodecahedrons. The open-ended pieces keep the set useful as children's understanding of shape grows.
• How many children can use the Crystal Polydron Class Set?
  Polydron designed the 184-piece Crystal Class Set for whole-class use, so several small groups can build at once. A typical approach is to share pieces between tables, with each group building a different solid and then comparing faces, edges and vertices. The exact group size depends on the task you set.
• Can the Crystal Polydron Class Set be used at home?
  Yes, the Crystal Polydron Class Set works well at home, especially for families with more than one child. There are enough pieces for children to build side by side. Holding models up to a window shows off the colours, and the exploring booklet gives easy ideas to start with.
• Is it suitable for children with SEND or learning differences?
  Yes, many children with SEND and learning differences benefit from hands-on resources like Crystal Polydron. Translucent pieces let children see hidden faces and edges, which makes counting properties easier. The bright colours give clear visual cues on a light table, and adults can adapt tasks to suit each learner's pace.
• What comes in the Crystal Polydron Class Set?
  The set contains 184 pieces and an exploring booklet. There are 100 equilateral triangles, 40 squares with 7.5 cm sides, 24 pentagons and 20 hexagons, in red, yellow, blue, green and clear. Polydron lists the set at 43 x 31 x 8 cm and 3.88 kg.
• What is the difference between the Crystal Polydron Basic Set and Class Set?
  The Crystal Polydron Class Set adds 20 hexagons to the shapes in the Basic Set, giving 184 pieces instead of 164. Both sets include 100 equilateral triangles, 40 squares, 24 pentagons and an exploring booklet. The Class Set is designed for whole-class use, while the Basic Set suits smaller groups.
• How do you clean Crystal Polydron pieces?
  Crystal Polydron pieces are dishwasher safe at 70°C, so a full class set can be cleaned easily after shared use. Polydron makes the pieces from engineering grade polycarbonate and states that they are BPA free and 100% recyclable. The set is supplied in a recyclable carton.