| 摘要 |
PROBLEM TO BE SOLVED: To provide an innovative auxiliary tool for learning with a very high commercial value.SOLUTION: The auxiliary tool comprises a plurality of solids 1 of which shapes in an erected state are different from each other, and which can be folded and overlapped each other, and a storage body 2 equipped with a plurality of solid storage parts 2a in which each solid 1 folded and overlapped in a thin plate-form is sorted and stored. |
