2: Counting From One on Materials - Addition and Subtraction


Tane has 5 biscuits. He gives 2 to his little brother. How many does he have left?

Student: One, two, three, four, five [puts up five fingers one at a time]. One, two [takes two down]. One, two, three, he has three left.

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Students at the Counting From One on Materials stage rely on counting physical materials, like their fingers. They count all the objects in both sets to find an answer to a joining or separating of sets problem.