Can you find pairs of differently sized windows that cost the same?

How do you know whether you will reach these numbers when you count in steps of six from zero?

Choose some fractions and add them together. Can you get close to 1?

Exponential functions grow pretty quickly...

Have a go at making a few of these shapes from paper in different sizes. What patterns can you create?

Can you work out what shape is made when this piece of paper is folded up using the crease pattern shown?

I'd be very surprised if I had three children all with the same birthday, but I read in the paper that it happened to one family...

How can you decide if a graph is traversable?

Can you solve the clues to find out who's who on the friendship graph?