Trinomial Squares


Trinomial Squares

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The trinomial square is contained in a
wooden box with lid having 9 hard
board tablets painted red, blue, yellow
and black. (a b c)2
The trinomial square is a concrete
representation of the algebraic
formula (a b c)2. The factors of the
equation are represented by the
pieces. The elementary Montessori
child uses the trinomial square as an
activity of algebraic exploration”


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