This section is loosely titled geometry.  It contains ideas for constructions, making polyhedra, and some other objects.  Many of the ideas are suitable for all students, although some of the polyhedra ideas require Pythagoras and trigonometry, so are only suitable for able KS3 or KS4 students. 

• making polyhedra
• zometool
• five-fold symmetry
• stellation
  
• truncation
• spinning tops
• the rhombicosidodecahedron
• the great rhombicosadodecahedron
• spherical models
• playing card models
• slide-togethers
• nolids
• geodesic dome
• straw sculptures
• goldberg polyhedron
• space filling polyhedra
• knotologie
• IQ light
• duality
• angle deficiency
• vertex figures
• tensegrity structures
  
• rhombic dodecahedron
• rhombic zonohedra
• the tetrahedron
• orderly tangles
• soap bubbles
• area and perimeter
• twist and lock blocks
• J cubes
• circle theorems and isosceles triangles
• polygon paper
• tessellations
• shadowfolds
• mathematical beading
• dissections
• some-a puzzles
• trees
• planar graphs
• linkages
  
• pantograph
• curves of pursuit
• impossible stacks 
• kaleidoscopes
• the ellipse
• the hyperboloid
• rectangular hyperbola
• circles and islamic patterns
• polyominoes
• 4-D models
• 1-100 and vice versa
• maths art
• gaudi