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发明名称
分数演示器
摘要
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。
申请公布号
CN202134138U
申请公布日期
2012.02.01
申请号
CN201120265074.X
申请日期
2011.07.13
申请人
周长颜
发明人
周长颜
分类号
G09B23/02(2006.01)I
主分类号
G09B23/02(2006.01)I
代理机构
代理人
主权项
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)。
地址
272000 山东省兖州市军民学校
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