CN202711523U - 沙漏式极限讲解教具 - Google Patents

沙漏式极限讲解教具 Download PDF

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Publication number
CN202711523U
CN202711523U CN 201220352691 CN201220352691U CN202711523U CN 202711523 U CN202711523 U CN 202711523U CN 201220352691 CN201220352691 CN 201220352691 CN 201220352691 U CN201220352691 U CN 201220352691U CN 202711523 U CN202711523 U CN 202711523U
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China
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teaching aid
teaching
explaining
hourglass
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CN 201220352691
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English (en)
Inventor
夏冰
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HARBIN FINANCE COLLEGE
Harbin Finance University
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HARBIN FINANCE COLLEGE
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Abstract

沙漏式极限讲解教具。在数学教学过程中,目前没有关于极限讲解的教具,给教学过程带来了不便,影响教学效果。本实用新型的组成包括:透明玻璃瓶体( 1 )、瓶口( 2 ),所述的透明玻璃瓶体的开口处螺纹连接有瓶盖( 3 ),所述的瓶口内安装有圆形挡板( 4 ),所述的圆形挡片与旋钮( 5 )通过连接杆( 6 )连接,所述的连接杆穿过所述的瓶口的通孔。本产品用于教学用具。

Description

沙漏式极限讲解教具
技术领域:
本实用新型涉及一种沙漏式极限讲解教具。
背景技术:
在数学教学过程中,目前没有关于极限讲解的教具,给教学过程带来了不便,影响教学效果。
发明内容:
本实用新型的目的是提供一种沙漏式极限讲解教具。
本产品使用时,开启瓶盖将细砂注入透明玻璃瓶体内,在进行教学演示时,旋转旋钮,细砂从瓶口流出,可根据旋钮的旋转角度控制细砂的流量,给教学过程带来了便利,提高教学效果。
上述的目的通过以下的技术方案实现:
一种沙漏式极限讲解教具,其组成包括:透明玻璃瓶体、瓶口,所述的透明玻璃瓶体的开口处螺纹连接有瓶盖,所述的瓶口内安装有圆形挡板,所述的圆形挡片与旋钮通过连接杆连接,所述的连接杆穿过所述的瓶口的通孔。
所述的沙漏式极限讲解教具,所述的透明玻璃瓶体表面设有刻度。
附图说明:
附图1是本产品的结构示意图。
附图2是附图1的A-A剖视图。
具体实施方式:
实施例1:
一种沙漏式极限讲解教具,其组成包括:透明玻璃瓶体1、瓶口2,所述的透明玻璃瓶体的开口处螺纹连接有瓶盖3,所述的瓶口内安装有圆形挡板4,所述的圆形挡片与旋钮5通过连接杆6连接,所述的连接杆穿过所述的瓶口的通孔。
实施例2:
根据实施例1所述的沙漏式极限讲解教具,所述的透明玻璃瓶体表面设有刻度。

Claims (2)

1.一种沙漏式极限讲解教具,其组成包括:透明玻璃瓶体、瓶口,其特征是:所述的透明玻璃瓶体的开口处螺纹连接有瓶盖,所述的瓶口内安装有圆形挡板,所述的圆形挡片与旋钮通过连接杆连接,所述的连接杆穿过所述的瓶口的通孔。
2.根据权利要求1所述的沙漏式极限讲解教具,其特征是:所述的透明玻璃瓶体表面设有刻度。
CN 201220352691 2012-07-20 2012-07-20 沙漏式极限讲解教具 Expired - Fee Related CN202711523U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220352691 CN202711523U (zh) 2012-07-20 2012-07-20 沙漏式极限讲解教具

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220352691 CN202711523U (zh) 2012-07-20 2012-07-20 沙漏式极限讲解教具

Publications (1)

Publication Number Publication Date
CN202711523U true CN202711523U (zh) 2013-01-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220352691 Expired - Fee Related CN202711523U (zh) 2012-07-20 2012-07-20 沙漏式极限讲解教具

Country Status (1)

Country Link
CN (1) CN202711523U (zh)

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Granted publication date: 20130130

Termination date: 20140720

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