发明名称 AN INSTRUMENT FOR LEARNING DIAGRAM
摘要 PURPOSE: A teaching aid for learning figures is provided to understand difficult mathematic principles easily and joyfully. CONSTITUTION: A teaching aid for learning figures comprises the following steps: A body comprises a floor board(10), an edge(11) surrounding the circumference of the floor board, and a transparent upper board(12) separated in a parallel direction from the floor board, and forms a sealed space isolated from the outside. Plural partitions(13,14,15,16) are formed vertically between the floor board and the upper board, and divide the sealed space of the body into multiple polygonal space. A fluid(W) is filled in on one part of the polygonal space.
申请公布号 KR20130012939(A) 申请公布日期 2013.02.05
申请号 KR20120081585 申请日期 2012.07.26
申请人 LEE, YOON DO;LEE, SEO RIM 发明人 LEE, SEO RIM;LEE, YOON DO;LEE, YOUNG RO;LEE, JIN
分类号 G09B23/04;G09B19/00 主分类号 G09B23/04
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