MEDIAN Don Steward mathematics teaching: 3-digit subtractions

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don steward
mathematics teaching 10 ~ 16

Saturday, 8 February 2020

3-digit subtractions

a ppt is here

Posted by don steward

Labels: place value proof, subtraction

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don steward: my interest is in effective tasks for teaching mathematics to 10 to 18 year students ~ I have collected and trialled many people's ideas for tasks for many years and have played at making these work ~ my thanks to these people

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