Distance, Speed and Time

Distance

The distance between two points on a map can be found by measuring the distance on the map and then converting it from centimetres to kilometres and/or metres. Most students do this by using the map’s linear scale, which will work for both print and digital documents. 

There are several ways to measure the distance between two points on a map. Some students use a length of string, while others use a pair of dividers. The following methods are more likely to be accurate because they make it easier to work around curves and sharp corners.

Measuring a straight-line distance

To estimate a straight-line distance, place the edge of a sheet of paper between the two points and mark on the paper the distance between the points. Place the paper along the map’s linear scale. Read off the distance on the scale.

Measuring a distance along a curved line

To estimate a distance along a curved line, place a sheet of paper on the map and mark off the starting point or use a piece of string. Carefully move the paper so that its edge follows the curve, marking each section with a pencil as you go. Mark the end point and then place your sheet of paper on the linear scale. Read off the distance on the scale.