The most common mistake
Children often start measuring from the end of the ruler, or from 1. On the printed-ruler sheets every object starts exactly at zero; on the “use your own” sheets they have to line it up themselves.
Real size
Every sheet is drawn to scale, so the objects are as long on paper as their measurements say. That makes it easy to check an answer with a real ruler.
In the New Zealand Curriculum
- First 6 monthsComparing two objects directly, with words like longer, shorter and taller.
- Year 2Measuring with everyday objects, such as cubes or hand spans, rather than standard units.
- Year 3Estimating and measuring length in centimetres and metres with a ruler.
- Year 5Converting between metres and centimetres.
New Zealand uses metric units, so keep the maker on centimetres; inches are there for other countries. Rulers come in with Year 3, so these sheets fit Year 3 best. In Year 2, have children measure the same pictures with cubes first, then check with the printed ruler.
The curriculum asks for estimates before measuring from Year 3. With “use your own ruler”, ask ākonga to write a guess beside each object, then measure and see how close they came.
Summarised in our own words from the New Zealand Curriculum: Mathematics and Statistics, Years 0–8 (in effect from 2025), and the Ministry of Education’s year-by-year guide for parents and whānau.
