Metric and Imperial measures posters

A set of 2 posters for the classroom – also useful as handouts.
Metric measures (L1 upwards) – clarifies metric prefixes
Imperial measures (L1-2) – I’m not expecting students to know or learn these facts but this poster makes a useful discussion prompt (about the difficulties of working with Imperial measures and how much easier it is to use metric units) and also includes interesting facts about the history of Imperial units.