This teaching slides resource introduces metres as a formal unit of measurement, building understanding of what a metre is, why we use formal units, and what kinds of things we measure in metres and half a metre.
Slides open by revisiting length as a concept before introducing formal units — explaining that formal units are always exactly the same size so everyone gets the same answer. The metre is then introduced as a standard unit, including how it is written (m) and real-world reference points for how long 1 metre is. Slides then cover things we measure in metres and extend to half a metre, including a reminder that a ruler is shorter than half a metre.
What's included:
Introductory slides revisiting length as how long, how tall and the distance between two points and discussion slides on what formal units are, why we use them, and reference points for 1 metre
9 examples of things measured in metres and slides introducing half a metre, a visual comparison with 1 metre