CN203600838U

CN203600838U - Mathematical teaching aid

Info

Publication number: CN203600838U
Application number: CN201320823825.4U
Authority: CN
Inventors: 李少文
Original assignee: Yantai Vocational College
Current assignee: Yantai Vocational College
Priority date: 2013-12-16
Filing date: 2013-12-16
Publication date: 2014-05-21
Anticipated expiration: 2023-12-16

Abstract

The utility model provides an auxiliary teaching aid for mathematics teaching, which comprises a guide rail fixed under the blackboard, a ball bearing is arranged on the guide rail and can slide left and right, and a first ruler with a scale is fixed to the inner ring of the ball bearing; the first The free end of the steel rule has a hook, the middle part is provided with a slide block, and a pointer is fixed in the center of the slide block; half of the circular angle ruler is fixed with the second ruler 3, and the circular angle ruler and the second ruler are hinged on the slide block. Compared with the prior art, the utility model has the following advantages: the structure is simple, not only can draw straight lines, but also energy angles, and can also draw circles, and the auxiliary teaching effect is obvious.

Description

Mathematics Teaching Aids

技术领域 technical field

本实用新型涉及教学用具技术领域，具体涉及一种数学教学辅助教具。 The utility model relates to the technical field of teaching aids, in particular to an auxiliary teaching aid for mathematics teaching.

背景技术 Background technique

目前，在数学教学过程中经常需要在黑板上作图讲解演示，现有技术主要是由教师一手高举固定直尺，量角器或大圆规等工具，一手持粉笔作图，这样操作十分麻烦、费时费力，因此有些老师徒手进行绘制，但画出的图不美观，比例不标准，影响教学质量。 At present, in the process of mathematics teaching, it is often necessary to draw pictures on the blackboard to explain and demonstrate. The existing technology is mainly to use the teacher to hold a fixed ruler, protractor or compasses and other tools in one hand, and hold chalk in the other hand to draw pictures. This operation is very troublesome, time-consuming and laborious. , so some teachers draw by hand, but the pictures drawn are not beautiful and the proportions are not standard, which affects the quality of teaching.

发明内容 Contents of the invention

本实用新型的目的就是针对现有技术存在的缺陷，提供一种结构简单，能实现辅助教学，提高画图质量的数学教学辅助教具。 The purpose of the utility model is to provide an auxiliary teaching aid for mathematics teaching which is simple in structure and can realize auxiliary teaching and improve drawing quality in view of the defects in the prior art.

这种数学教学辅助教具，包括一固定在黑板1下方的导轨6，滚珠轴承8设置在在导轨6上可左右滑动，带有刻度的第一直尺2与滚珠轴承8的内圈固定；第一钢尺2自由端带有勾头，中部设置有滑块5，滑块5的中心固定一指针7；一半圆角度尺4与第二直尺3固定，圆角度尺4和第二直尺3铰接在滑块5上。 This auxiliary teaching aid for mathematics teaching includes a guide rail 6 fixed below the blackboard 1, the ball bearing 8 is arranged on the guide rail 6 and can slide left and right, and the first ruler 2 with scale is fixed to the inner ring of the ball bearing 8; The free end of a steel ruler 2 has a hook, and the middle part is provided with a slide block 5, and a pointer 7 is fixed at the center of the slide block 5; the semicircle angle ruler 4 is fixed with the second ruler 3, and the circle angle ruler 4 and the second ruler 3 is hinged on the slide block 5.

本实用新型与现有技术相比较，具有以下优点：结构简单，不仅能画直线，也能量角度，还能画圆，辅助教学效果明显。 Compared with the prior art, the utility model has the following advantages: the structure is simple, not only can draw straight lines, but also energy angles, and can also draw circles, and the auxiliary teaching effect is obvious.

附图说明 Description of drawings

图1是本实用新型使用状态的结构示意图。 Fig. 1 is a schematic structural view of the utility model in use.

图2是本实用新型不使用状态的结构示意图。 Fig. 2 is a schematic structural view of the utility model in a non-use state.

具体实施方式 Detailed ways

参见附图。 See attached picture.

包括一固定在黑板1下方的导轨6，滚珠轴承8设置在在导轨6上可左右滑动，带有刻度的第一直尺2与滚珠轴承8的内圈固定；第一钢尺2自由端带有勾头，中部设置有滑块5，滑块5的中心固定一指针7；一半圆角度尺4与第二直尺3固定，圆角度尺4和第二直尺3铰接在滑块5上。 It includes a guide rail 6 fixed below the blackboard 1, the ball bearing 8 is arranged on the guide rail 6 and can slide left and right, the first ruler 2 with scale is fixed with the inner ring of the ball bearing 8; the free end of the first steel ruler 2 has a There is a hook head, a slider 5 is arranged in the middle, and a pointer 7 is fixed in the center of the slider 5; the half-round angle ruler 4 is fixed to the second ruler 3, and the circle angle ruler 4 and the second ruler 3 are hinged on the slider 5 .

使用时可左右拖动第一直尺2和第二直尺3在黑板1的位置，保持指针7指向90度是可量取垂直方向的距离，第二直尺3可自由旋转360度，根据指针7的指向可画任意角度的直线，保持第一直尺2不动，旋转第二直尺3可画圆。 When in use, you can drag the first ruler 2 and the second ruler 3 left and right to the position of the blackboard 1, keep the pointer 7 pointing at 90 degrees to measure the distance in the vertical direction, and the second ruler 3 can freely rotate 360 degrees, according to Pointing to the pointer 7 can draw a straight line at any angle, keep the first ruler 2 still, and rotate the second ruler 3 to draw a circle.

Claims

1. Auxiliary teaching aids for mathematics teaching, including a guide rail (6) fixed under the blackboard (1), the ball bearing (8) is set on the guide rail (6) and can slide left and right, and the first ruler with scale (2) It is fixed with the inner ring of the ball bearing (8); the free end of the first steel ruler (2) has a hook head, and a slider (5) is arranged in the middle, and a pointer (7) is fixed at the center of the slider (5); the semicircle The angle ruler (4) is fixed with the second straightedge (3), and the circular angle ruler (4) and the second straightedge (3) are hinged on the slide block (5).