Key learning points

1. The language 'for every' can be used to describe the relationship between the distance on the map and on the ground.
2. A double number line can represent the relationship between the distances.
3. The representation helps to identify the calculations needed to solve the problem.

Common misconception

Keywords

• Scale - A scale is used to show how the distances on a map or plan relate to distances in real life

• Scaling - Scaling is the operation of changing one value to another using multiplication or division, using the same factor or divisor

• Double number line - A double number line is used to show the relationship between two values, in this case, the distances on the plan and those in real life