Educational device
OwnerMarion W. Stuartinventor
Life of this patent
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Abstract
This invention relates to an educational device having a card with notched edges and a series of numbers or words along each longitudinal edge of the card corresponding to each notch. The correct answer to a problem from one edge of the card, whether arithmetic or grammatical or historical, is found on the opposite edge of the card. A string member is used to connect the problem on one edge of the card with the correct answer on the other edge. The reverse side of the card has the correct string lines imprinted thereon corresponding to the correct placement of the string member for the correct answers to the problems on the face side of the card.
Claims9
Educational device for teaching informational relationships, comprising in combination:
- card means having at least two mutually opposing edges, a face and a rear side, each edge having a plurality of notches along the length thereof;
- a plurality of problems arranged respectively next to said notches along one of said opposing edges of the face of said card;
- a plurality of answers arranged respectively next to said notches along the opposite one of said opposing card edges, said answers comprising correct solutions to each of said corresponding problems on the opposing card edge;
- elongate string means for extending from a notch on one edge to another notch on the opposing edge of said card means;
- and
- a plurality of line indicators on said rear side of said card corresponding to the placement of said string means across said card rear side representing the correct answers to said problems.
Educational device as set forth in number problems and number answers on the card face.
Dependencies are inferred from the claim text.