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  • Christina Michaels

    October 9, 2020 at 2:15 pm

    I think my students– struggling middle schoolers– would jump right in to an algorithm. I think adding and subtracting is something they view as a strength of theirs, and where they comfortably live. The problem (like the 1001-999 example in the video) is that if students make mistakes in the algorithm, they often don’t recognize that they’ve made mistakes. I think using number lines is a powerful way to help build that number sense– how far apart are these numbers? does your answer make sense?