The utility model relates to an instruments used for education technical field especially indicates a mathematics plotter is used in teaching, including the chi body, chi body one side is equipped with the scale mark, chi body opposite side is equipped with wavy line, be equipped with the drawing board on the chi body, the utility model discloses an above -mentioned technical scheme's beneficial effect as follows: simple structure, the technique is equitable, and convenient to use synthesizes multiple graphics primitive, can satisfy the drawing requirement of different figures, need not change different graphics primitives, has improved drawing efficiency, in addition, sets up by the drawing board, and teacher's required roughly figure and numerical value of drawing on the blackboard that can draw on the drawing board has further improved drawing efficiency.