Plotter for mathematic teaching

Abstract

The invention provides a plotter for mathematic teaching, and relates to a spiral line drawing device. A transverse slide way arranged longitudinally is arranged in the center of the upper side of a base. A movable frame is vertically disposed on the base. The lower edge of a convex edge of the movable frame is connected with a rack below the base. The vertical edge of a triangular support is supported on the rear side of the movable frame. The lower end of a lead angle guide rod is hinged to the right-angle position of the movable frame. The upper end of the lead angle guide rod is fixed to an arc-shaped through groove through a lead angle adjusting bolt. A longitudinal slide way which is through in the forward-backward direction is arranged on the lead angle guide rod, and a line drawing pen is matched with the slide way. A slider is arranged on the portion, on the rear side of the line drawing pen, on the base. A vertical slide groove is formed in the vertical edge of the triangular support, and the slider is matched with the vertical slide groove in a sliding mode. A motor is fixed below the base, a gear is installed on a motor rotary shaft, and the gear is engaged with the rack. The plotter solves the problems that spiral graphs in mathematic teaching are not standard, students can not participate in the circular helix drawing process, and the teaching effect is not ideal.

Description

technical field [0001] The invention relates to a mathematics teaching demonstration device, in particular to a spiral line drawing device. Background technique [0002] Demonstration method is a commonly used teaching method in physics, chemistry and other subjects. For mathematics teaching, it is used less and is generally not taken seriously. However, with the deepening of the new curriculum reform, teachers feel more and more that the demonstration method is very important. In many mathematics teaching, it can achieve twice the result with half the effort. Demonstration methods are intuitive, they can enable students to gain perceptual knowledge through observation, enrich direct experience, and lay a good foundation for learning new knowledge and forming new concepts. For example, when teaching the interior angles and theorem of a triangle, the teacher can cut a triangle with cardboard by himself, and then put the three angles together. Through simple demonstration ex...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a mathematics teaching plotter. The invention solves the problem that the manual drawing of spiral graphics by teachers in mathematics teaching is very irregular; teaching tools such as models and pictures cannot be used to demonstrate the process of drawing cylindrical spirals; The use of audio-visual materials cannot allow students to participate in the process of drawing cylindrical spirals, which makes the teaching effect unsatisfactory

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