Mathematical graph board

Details Mathematical graph board Mathematical graph board

1998-03-26

2000-10-10

Harrison, Jessica J.

Education and demonstration

Mathematics

Arithmetic

434188, 434203, 434205, G09B 102, G09B 1902

Patent

active

061295515

ABSTRACT:
A new mathematical graph board for teaching linear equations and linear inequalities. The inventive device includes a board having an outer peripheral edge. The board includes a pair of peg boards secured within the outer peripheral edge. The pair of peg boards have a plurality of apertures therethrough. One of the peg boards has a four quadrant system disposed thereon. A plurality of graphing lines couple with the peg boards of the board. Each of the graphing lines is defined by a pair of pegs dimensioned for being received within the apertures of the peg boards. The pair of pegs have an elastic band extending therebetween. The elastic band varies a length of the graphing lines.

REFERENCES:
patent: 5639090 (1997-06-01), Stevens

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