Trinomial Cubes


Trinomial cube

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The Trinomial cube comes in after child is introduced to binomial cube.

This again is a perfectly fitting in example of child learning in concrete before going for abstract concepts.

The trinomial cube is a concrete representation of the algebraic formula (a +b +c)3.

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.

 The factors of the equation are represented by the cubes and prisms.

The  child uses it for sensorial exploration, while the elementary child uses the trinomial cube as a concrete step towards algebraic expressions.


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