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Description :
"The trinomial cube is contained in a wooden box with lid, having two adjacent hinged sides that open out to display the 27 wooden component cubes and prisms painted red, blue, yellow and black.(a+b+c)3"
Objective :
The trinomial cube is a concrete representation of the algebraic formula (a+b+c)3. The factors of the equation are represented by the cubes and prisms. The casa child uses it for sensorial exploration, while the elementary child uses the trinomial cube as a concrete step towards abstract algebraic understanding.
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