5: Early Additive - Proportions and Ratios

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Carla has sixteen biscuits and eats one quarter of them. How many does she eat?


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Student: Half of sixteen is eight, and half of eight is four, so a quarter is four.

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At the Early Additive stage, students have begun to recognise that numbers are abstract units that can be treated simultaneously as wholes or can be partitioned and recombined. This is called part-whole thinking.