| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a learning tool that requires no other stationery for learning by heart while it can temporarily conceal, without smearing the paper surface, specific parts to be learned by heart. <P>SOLUTION: A learning tool comprises a plurality of notebook sheets bound along binding margins on one side, and can conceal specific parts written or printed on the surface of each notebook sheet; the learning tool further is in substantially the same color as the specific parts and is transparent, and is provided with flexible check sheets bound along margins on the different side from those of the notebook sheets. <P>COPYRIGHT: (C)2012,JPO&INPIT |
