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Length, Area and Volume

  • Length – where pi comes from, and how to calculate the circumference of a circle.

  • Area – you always wanted to know the surface area of a human, right?

  • Volume – just remember 1 liter is 1 cubic decimetre.

  • Comparing Surface Area & Volume – the importance of surface area for volume, and how size makes a difference for chemical reactions and hot air balloons.

  • Polygons & Polyhedra – polygons are shapes; polyhedra are solids. Objects such as soccer balls are made from certain polyhedrons, while dice can be made from many different polyhedra. Polyhedra can be made by plaiting; an example is given of a plaited cube.

  • Measurement Devices – lots of devices used to measure all sorts of lengths, areas and volumes.