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Say the units aloudYear 8 Maths · T1 W5–6 · H04

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Imagine a drawing model making 16 cm of line in 4 minutes at a constant rate. Say its rate aloud, with both units. Predict the line length for 7 minutes. Ask what would change if it paused for the first minute of that seven-minute period.

A way to check: 4 cm/min gives 28 cm for 7 productive minutes. With one minute spent paused and 6 productive minutes, the same productive rate gives 24 cm. The meaning of the time matters.