2.NBT.9

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  • January 13, 2015 at 11:59 am #3330
    kelli
    Member

    We’re working on a second grade standards-based report card in my district, and trying to assure that our expectations are in line with the intentions of the math standards. Is it the intention of 2.NBT.9 for students to “explain why addition and subtraction strategies work” verbally? In writing? Or both?

    • This topic was modified 9 years, 10 months ago by kelli.
    February 1, 2015 at 9:37 am #3342
    Bill McCallum
    Keymaster

    It could be either, I think. It would be a natural part of a classroom where students are talking about their reasoning and asking questions about others’ reasoning. Certainly no need to write an essay!

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