| 摘要 |
PURPOSE: A mathematical education tool is provided to express visually a mathematical language by using a light emission board having a magnetic member and a bar diagram plate having a magnet. CONSTITUTION: A mathematical education tool includes a light emission board and a plurality of bar diagram plates. The light emission board(10) includes a front plate, a surface light source, a magnetic member, and a frame. A transparent resin is coated on a surface of the front plate(22). The surface light source is installed at a backside of the front plate. The magnetic member is installed at a rear side of the front plate. The frame(11) is installed around the front plate, the surface light source, and the magnetic member in order to coupling the front plate, the surface light source, and the magnetic member to each other. The bar diagrams plates(50) include magnets and are adhered on an upper surface of the front plate.
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