1. A new and improved apparatus for teaching the addition and subtraction of whole numbers through the use of objects comprising, in combination: a sheet with three containers across a first row and three containers across a second row, the containers of the first row being separated by a plus sign (+) and the second and third containers being separated by an equals sign (=); the second row being formed of three containers with a negative sign (-) located between the first and second containers and an equals sigh (=) between the second and third containers; and a plurality of objects, the objects being of a similar shape but with distinctive markings thereon and wherein the containers are fish bowls and the objects are fish; whereby when some of the objects are placed in a first container and others of the object are placed in the second container, the third container may be filled by the child with objects representing the mathematical process to be performed.