Mathematical graph board
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 10, 2000
Grant Date -
N/A
app pub date -
Mar 26, 1998
filing date -
Mar 26, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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