摘要 |
PURPOSE: A learning aid for understanding a figure is provided to help a leaner understand conversion state of the figure which is changed the shape according to viewing position. CONSTITUTION: A plurality of transparently divided hexahedrons(32) is prepared. A plurality of opaque hexahedrons(33) in which width is narrow is prepared. A learning aid is formed by bonding the plurality of transparently divided hexahedrons and the plurality of opaque hexahedrons by turns. The plurality of opaque hexahedrons performs a role as a horizontal band. |