A number line is a straight, horizontal line with numbers placed at even increments along the length. Based around
K1-4 and the new UK KS1 and KS2 Maths National Curriculum, Number Line Galaxy covers; basic addition, number bonds,
subtraction and multiplication.
Number lines are used in schools all around the world and research has shown the importance of the number line as a tool for helping children develop greater flexibility in mental arithmetic.