Key learning points

1. Reading values from scales in a useful skill in a variety of contexts.
2. Different countries may use different measurements.
3. Incorrect conversion produces a different ratio.

Common misconception

Keywords

• Metric units - Metric units are based around the standard units of metre, gram and litre.

• Imperial - Imperial is a system of units for measuring, which was created in the early 1800s, during the British Empire.

• Interval - An interval is the space between two values or points. On a scale, intervals are shown using a small mark or line to show the space between.