This teaching slides resource introduces centimetres as a formal unit of measurement, building understanding of what a centimetre is, why we use it, how long 1 cm is, and what kinds of things we measure in centimetres.
Slides open by establishing why we need a smaller unit than metres for shorter lengths, before introducing the centimetre — including its abbreviation (cm) and real-world reference points for how long 1 cm is. Slides then cover things we measure in centimetres, followed by explicit teaching of how to read a ruler correctly, including the key reminder that measuring starts from zero, not the edge of the ruler.
What's included:
Introductory slides on what a centimetre is, why we use it, how long 1 cm is, and things we measure in centimetres
Teaching slides on how to read a ruler correctly, including the gap between the ruler edge and zero
6 practice slides to read a ruler and identify the length of each object, with answers revealed one at a time