๐ Measure with a ruler
๐ข Math ยท Measuring, money and time๐ Year 1 โ Year 4
Look closely at both ends of the pencil: how many centimeters long is it? Careful if it doesn't start at zero!
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About โMeasure with a rulerโ
A pencil appears above a ruler marked in centimeters and millimeters, and the child reads its length. They learn where to look: at the zero and at the pencil's tip.
The third level has a trap many pupils fall into: the pencil doesn't start at zero, so its length is the difference between its two ends, not the number where it stops.