You may also like

Walk and Ride

How far have these students walked by the time the teacher's car reaches them after their bus broke down?

Rolling Around

A circle rolls around the outside edge of a square so that its circumference always touches the edge of the square. Can you describe the locus of the centre of the circle?

Paradoxes

A paradox is a statement that seems to be both untrue and true at the same time. This article looks at a few examples and challenges you to investigate them for yourself.

N Is a Number

Age 11 to 14 Challenge Level:
This problem does not need algebra.

Is N odd or even?
How long do the walkers take to reach B?
How large can N be?