LINING UP THE NUMBERS NO LONGER WORKS

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From: admin
Added: 2011-08-18

Category: Grade 3
Duration: 0:02:04

Tags: lining up the number algorithm, using strategies to add mentally, working memory, size of working memory

Video Description: Students are asked to line up two three-digit numbers in their head and add them. They are unable to do this. They are then shown how making a problem simpler enables a person to do complex additions in their head without stacking.

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