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.
NCF and NCERT links
- Class 1The NCF-FS (C-8.9) has children estimating and measuring with hand spans, footsteps and fingers, for example in games like gilli danda and marbles.
- Class 2Children move to uniform informal units, such as a pencil or a rod, before standard units.
- TextbookJoyful Mathematics for Class 1 has a chapter called “What is Long?”.
The foundational outcomes stop at informal units, so these centimetre-ruler sheets fit best from the end of Class 2 into the Preparatory Stage, once children have measured the same things with pencils and hand spans and seen why everyone needs the same unit.
India uses metric units in school maths, so choose centimetres. Children can ignore the inch side of their ruler for now.
Summarised in our own words from the National Curriculum Framework for Foundational Stage (NCERT, 2022) and NCERT’s Joyful Mathematics textbooks.
