median
don steward
mathematics teaching 10 ~ 16
Monday, 8 February 2016
decimal addition
another attempt to suggest a lesson with sections involving
teaching or reviewing a skill
practice of that skill in tasks that involve generalisation and possibly proof
students can be taught to make the first digits up to 9 and then the last one to 10 (unless it's zero)
they can speed up....
maybe for homework or extra work
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