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As part of my interactive Mathmagics show, I was looking for something new for the younger pupils for whom numeracy tricks and stories would be too advanced and who are often unable to enjoy visits from those working with the older pupils. I wanted to be able to provide sessions for everyone, irrespective of their experience and abilities.


Exploring Deltahedra

We recently came across an excellent article in 'Mathematics Teaching', written by Tandi Clausen-May, a regular user of Polydron and a long-time member of the Association of Teachers of Mathematics (ATM). She is a strong advocate of children learning through touch and exploration, and this article clearly demonstrates the benefits of this approach.



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Crystal Polydron - Great for seeing within shapes

We have just launched a new range called Crystal Polydron. The size of the pieces are the same as our Original Polydron, the shapes are all solid and are totally transparent. They look stunning on light tables and against a light source. The introduction of transparent pieces allows you to see inside the structure.


We use the same language to describe uniform tilings and polyhedra: Platonic if all the regular polygons are the same, Archimedean if there's a mixture, and a tiling - like the kagome pattern, 3.6.3.6 - can be thought of as an infinite polyhedron. What controls the size of the polyhedron is the angular defect, d, the difference from 360°, at each vertex. They total 720°, so, if there are v vertices, vd = 720°.


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