Can you work out the fraction of the original triangle that is covered by the inner triangle?

Triangle ABC has equilateral triangles drawn on its edges. Points P, Q and R are the centres of the equilateral triangles. What can you prove about the triangle PQR?

This article looks at knight's moves on a chess board and introduces you to the idea of vectors and vector addition.

A visualisation problem in which you search for vectors which sum to zero from a jumble of arrows. Will your eyes be quicker than algebra?

Use vectors to collect as many gems as you can and bring them safely home!

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?

Starting with two basic vector steps, which destinations can you reach on a vector walk?

The article provides a summary of the elementary ideas about vectors usually met in school mathematics, describes what vectors are and how to add, subtract and multiply them by scalars and indicates. . . .

Can you find the area of a parallelogram defined by two vectors?

Can you combine vectors to get from one point to another?