| 摘要 |
PURPOSE: An eraser is provided to enable children to play various handicrafts and to make various structure blocks according to users' originality. CONSTITUTION: The eraser(100) comprises at least one or more assembly projections(102) and assembly grooves(103) of the predetermined size on an eraser body(101), the eraser body comprising at least one or more assembly projections only or assembly grooves only and the assembly projections and assembly grooves in the size to be geared into each other being formed in the various shapes such as a triangle, a quadrangle, a polygon, a circle, an arrow, a semicircle or others.
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