You have been given three shapes made out of sponge: a sphere, a cylinder and a cone. Your challenge is to find out how to cut them to make different shapes for printing.
A description of how to make the five Platonic solids out of paper.
This article for pupils gives an introduction to Celtic knotwork
patterns and a feel for how you can draw them.
Published November 2007,December 2007,February 2011.