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Explore the strange geometrical properties of the Koch Snowflake.

Can you work out which processes are represented by the graphs?

A country has decided to have just two different coins. Which totals can be made? Is there a largest total that cannot be made? How do you know?

The Egyptians expressed all fractions as the sum of different unit fractions. Here is a chance to explore how they could have written different fractions.

Charlie likes to go for walks around a square park, while Alison likes to cut across diagonally. Can you find relationships between the vectors they walk along?

How can you change the area of a shape but keep its perimeter the same? How can you change the perimeter but keep the area the same?

What's special about the area of quadrilaterals drawn in a square?

A game in which players take it in turns to try to draw quadrilaterals (or triangles) with particular properties. Is it possible to fill the game grid?

Four rods are hinged at their ends to form a convex quadrilateral. Investigate the different shapes that the quadrilateral can take. Be patient this problem may be slow to load.

What happens if you join every second point on this circle? How about every third point? Try with different steps and see if you can predict what will happen.