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Investigating solids with face-transitivity
In this article, we look at solids constructed using symmetries of their faces.
Polyhedra
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articlePaper folding - models of the Platonic solids
A description of how to make the five Platonic solids out of paper.
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articleThinking 3D
How can we as teachers begin to introduce 3D ideas to young children? Where do they start? How can we lay the foundations for a later enthusiasm for working in three dimensions?
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articleEuler's formula and topology
Here is a proof of Euler's formula in the plane and on a sphere together with projects to explore cases of the formula for a polygon with holes, for the torus and other solids with holes and the relationship between Euler's formula and angle deficiency of polyhedra. -
articleThe dodecahedron explained
What is the shortest distance through the middle of a dodecahedron between the centres of two opposite faces?