Brian Butterworth is on a crusade to understand the number deficit called dyscalculia — and to help those who have it.

In this KS1 Maths article you'll learn what number lines are and how to add and subtract using them. We also have KS1 Maths videos, a quiz and lots of examples.

In these number line games you're asked to make Rabbit jump about a number line so that he lands on the tasty vegetables and avoids the monsters. These activities show how adding and subtracting ...