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  • Lisa Hudson

    July 9, 2020 at 10:16 pm

    These concrete and visual models are so powerful in helping kids see and understand the concepts and reasons behind the standard algorithms. They make strong connections for understanding the multiplication of problems such as (x + 4)(x + 3) using algebra tiles.

    The concept of doubling and halving can be extended to tripling and thirding, quadrupling and fourthing, etc.