Square Roots the Montessori Way

Visualizing (x+5)(x+1), when x is equal to 10.
225 = 15x15. And, 1 blue + 5 green = 15
225 = 15x15. And, 1 blue + 5 green = 15
42² = 1764 represented on a peg board. 4 blue + 2 green pegs = 42

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Boris Reitman

Boris Reitman

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The course of history is determined by the spreading of ideas. I’m spreading the good ones.