Trinomial (Do Not Isolate)

This set contains 27 cubes and cuboids designed to represent the formula $(abc)^3 = a^3 + b^3 + c^3 + 3ab^2 + 3ba^2 + 3bc^2 + 3cb^2 + 3ac^2 + 3ca^2 + 6abc$. The pieces are color-coded with red, blue, yellow, and black to help children assemble them correctly. The material is crafted with high precision to ensure the pieces fit together perfectly on all sides.