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Montgomery County Public Schools (MCPS)
Reply to "Curriculum 2.0 Math and 4th and 5th graders"
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[quote=Anonymous] [quote]They are approaching the idea that, for example, 623 - 198 Is equivalent to 623 - (200 - 2) Then you can teach negative numbers and distributive property of multiplication. The alternative is to introduce the negative numbers as necessary to create a group with the subtraction operator, but the set-theoretic approach to teaching math to elementary students has been tried and never really worked. [/quote] But, what is new here? This is how we all learned math yesterday. The distributive property is an ancient concept. This is not new...perhaps on in Maryland. These strategies and tricks to simply and do math in the head rather than brute computation on paper or with calculators are very well established. I am surprised everyone including teachers view this as new. [/quote]
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