Patent ID: 7549865

Claim:
A mathematic manipulative comprising a board including two rows of numbers, one on a substantially horizontal axis and another on a substantially vertical axis having: a. one or more first cooperating answer elements associated with each number on each of the rows of numbers, each of the cooperating answer elements being the same, b. one or more answer markers having a second cooperating answer element for removable connection with any one of the one or more first cooperating answer elements, wherein the answer markers do not include any answer indicia associated with the answer markers, further wherein the second cooperating answer element of any answer marker cooperates with all of the first cooperating answer elements, and further wherein each answer marker is individual to one of the cooperating answer elements, c. a plurality of first cooperating place elements, at least one associated with each of the numbers in the rows of numbers, d. at least one place marker for each of the rows of numbers, each place marker having a second cooperating place element for connection with the first cooperating place element, and e. a storage section for holding the answer markers when not in use, said storage section comprising additional answer elements for removable connection with the second cooperating answer element of said answer markers.