Patent ID: 9659506
Date: 2017-05-23
CPC Classifications: G09B

Claim:
1. A system for teaching mathematics comprising: a sheet having a multiplication problem thereon, wherein the multiplication problem has at least a first number having two or more digits including at least a tens digit to be multiplied by a second number having two or more digits including at least a tens digit, the ones digit of the first number vertically aligned with the ones digits of the second number, and wherein the sheet includes space below the first and second number for calculating solutions to the multiplication problem; and a multiplication aid apparatus configured to be removably disposed on top of the multiplication problem on said sheet to focus a students' attention on a particular digit, said multiplication aid apparatus having a flat main body portion, wherein the main body portion has a front face, a back face, a left side and a right side, a first arm comprising a t-shape extending from the left side of the flat main body portion, wherein the first arm is configured to be positioned over at least one digit of the second number such that only a single digit of the second number is exposed while fully covering a first calculated solution of the first number multiplied by the ones digit of the second number, in the space below the first number, and a second arm comprising a rectangular-shape disposed below the first arm, wherein the second arm extends from the left side of the flat main body portion such that the second arm fully covers a second calculated solution of the first number multiplied by the tens digit of the second number, in the space below the first calculated solution, and is hingedly connected to the left side of the flat main body portion, such that hingedly moving the second arm disposes the second arm across the flat main body portion and exposes the second calculated solution of the first number multiplied by the tens digit of the second number, below the multiplication problem to aid in the multiplication problem.