Patent ID: 7857315

Claim:
An interchangeable mathematical dominos game device comprising: a plurality of dominos game pieces with each dominos having a rectangular polyhedron shape; each dominos being segmented into an upper portion and a lower portion of equivalent dimensions, size and shape; the upper portion overlaying and being attached to the lower portion; a mechanical means for selecting a mathematical operation internally disposed between the upper portion and the lower portion wherein a user can vary the mathematical operation; the upper portion and the lower portion being surrounded by a plurality of side walls; the upper portion and lower portion having a face divided into a left section and a right section with a window between the left section and the right section, the window for viewing a mathematical operation selected by a user with the mechanical means for selecting the mathematical operation; the left section and the right section each having a numerical indicia means incorporated thereupon wherein the user selects a corresponding mathematical operation using the mechanical means for operation upon the numerical indicia means; and the corresponding mathematical operation consisting of a physical representation of addition, subtraction, division, multiplication, equality, calculus operations, comparison, and algebraic equations wherein the numerical indicia on the left section, the mathematical operation and the numerical indicia on the right section in combination formulates a new device for computing a mathematical equation by a user.