CN202134138U - 分数演示器 - Google Patents

分数演示器 Download PDF

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Publication number
CN202134138U
CN202134138U CN201120265074U CN201120265074U CN202134138U CN 202134138 U CN202134138 U CN 202134138U CN 201120265074 U CN201120265074 U CN 201120265074U CN 201120265074 U CN201120265074 U CN 201120265074U CN 202134138 U CN202134138 U CN 202134138U
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disk
rotating shaft
fractional number
demonstration device
mathematics
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CN201120265074U
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周长颜
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Abstract

分数演示器,属于数学教学用具技术领域。本实用新型的技术方案是:包括圆盘和转轴,其特征是在圆盘上设有均分线,转轴上设有重叠扇形翼,圆盘侧面设有握环。本实用新型结构简单,在数学分数教学过程中操作简便、省时省力,减轻了教学工作的工作难度。

Description

分数演示器
技术领域:本实用新型属于数学教学用具技术领域,具体地讲是一种分数演示器。
背景技术:目前,在数学分数教学过程中,教师大多是在黑板上画图形演示几分之几,这样操作起来十分麻烦、费时费力,给教学工作增加了极大的工作难度。
发明内容:本实用新型的目的是提供一种在数学分数教学过程中操作简便、省时省力的分数演示器。
本实用新型的技术方案是:包括圆盘和转轴,其特征是在圆盘上设有均分线,转轴上设有重叠扇形翼,圆盘侧面设有握环。
本实用新型的有益效果是:本实用新型结构简单,在数学分数教学过程中操作简便、省时省力,减轻了教学工作的工作难度。
附图说明:附图1为本实用新型的结构示意图。
图中1、圆盘,2、转轴,3、均分线,4、重叠扇形翼,5、握环。
具体实施方式:包括圆盘1和转轴2,其特征是在圆盘1上设有均分线3,转轴2上设有重叠扇形翼4,圆盘1侧面设有握环5。在数学分数教学过程中,调节重叠扇形翼4演示即可。

Claims (1)

1.分数演示器,包括圆盘(1)和转轴(2),其特征是:在圆盘(1)上设有均分线(3),转轴(2)上设有重叠扇形翼(4),圆盘(1)侧面设有握环(5)。
CN201120265074U 2011-07-13 2011-07-13 分数演示器 Expired - Fee Related CN202134138U (zh)

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CN201120265074U CN202134138U (zh) 2011-07-13 2011-07-13 分数演示器

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CN201120265074U CN202134138U (zh) 2011-07-13 2011-07-13 分数演示器

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CN202134138U true CN202134138U (zh) 2012-02-01

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CN201120265074U Expired - Fee Related CN202134138U (zh) 2011-07-13 2011-07-13 分数演示器

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105654814A (zh) * 2016-03-28 2016-06-08 仲杏英 数学中的抽象环的形象化演示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105654814A (zh) * 2016-03-28 2016-06-08 仲杏英 数学中的抽象环的形象化演示装置
CN105654814B (zh) * 2016-03-28 2018-06-19 西安工程大学 数学中的抽象环的形象化演示装置

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Granted publication date: 20120201

Termination date: 20120713