problem Bracelets Age 7 to 11 Challenge level Investigate the different shaped bracelets you could make from 18 different spherical beads. How do they compare if you use 24 beads?
article The Cyclic Quadrilateral This gives a short summary of the properties and theorems of cyclic quadrilaterals and links to some practical examples to be found elsewhere on the site.
problem Folding Flowers 1 Age 7 to 11 Challenge level Can you visualise what shape this piece of paper will make when it is folded?
problem An Equilateral Triangular Problem Age 11 to 14 Challenge level Take an equilateral triangle and cut it into smaller pieces. What can you do with them?