Variable quadrilateral teaching aid

一种多变四边形教学用具

  • Inventors: MA CHAO
  • Assignees: 超 马
  • Publication Date: January 13, 2010
  • Publication Number: CN-201383240-Y

Abstract

The utility model relates to a variable quadrilateral teaching air, which belongs to the teaching aid, and consists of a ruler, a connection point and a groove. The ruler is provided with grooves, every two rulers are fixed at a connection point through a screw, and the screw is installed inside the groove of the ruler, so that quadrilaterals with different shapes can be obtained by adjusting the position of the screw inside the grooves. The variable quadrilateral teaching aid has the advantages that the teaching aid can be stretched at will, and the shape of the teaching aid can be varied, and the demonstration effect is direct. The drawing operability and the practicability are strong. The variable quadrilateral teaching aid has low cost, simple production and easy popularization.
一种多变四边形教学用具,属于教学用品。本实用新型由尺子,连接点,凹槽组成。将尺子上刻出凹槽,每两把尺子在连接点处采用螺丝固定,螺丝安装在尺子上的凹槽内,这样调节螺丝在凹槽内的位置,就可以得到不同形状的四边形。本实用新型的优点是,可任意拉伸、变换形状、演示效果直观。画图操作性、实用型强。造价低廉、制作简单、易普及。

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