Patent ID: 6129551
Filing Date: 2000-10-10
Classification: G09B

Abstract:
A mathematical graph board for teaching linear equations and linear inequalities comprising, in combination:a board having a generally square configuration, the board having an outer peripheral edge, the board including a pair of peg boards secured within the outer peripheral edge, a layer of foam material disposed between the pair of peg boards, the pair of peg boards having a plurality of apertures therethrough, one of the peg boards having a four quadrant system disposed thereon, the four quadrant system having graphical markings disposed thereon, a second peg board having a single quadrant system disposed thereon, the single quadrant system having graphical markings disposed thereon; anda plurality of graphing lines coupling with the peg boards of the board, each of the graphing lines being defined by a pair of pegs dimensioned for being received within the apertures of the peg boards, the pair of pegs having an elastic band extending therebetween, the elastic band varying a length of the graphing lines.