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Amano ‘not finished’ (video 3 of 7)

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start 21:56, length 1:10

Every response is greeted with approval, except possibly one boy, who sees the whole array as 30+30+9. Although he has ‘seen’ the whole problem as two sub-arrays of ‘3 rows of 10’ being 30 and a sub array of 3 rows of 3 being 9, he is told quietly that he hasn’t finished yet and must write it all down.

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