| 摘要 |
PROBLEM TO BE SOLVED: To provide a counting object tray for mathematical learning, which is convenient and suitable for learning mathematics. SOLUTION: In the tray 1 used to arrange a plurality of counting objects B for mathematical learning in two or more lines as one embodiment of the present invention, the total length of placing parts 2 for placing the respective lines of the counting objects B is set to a dimension obtained by adding a length less than the length of each piece of the counting objects B to a length corresponding to an integral multiple of the length of the counting objects B, and a falling preventing part 3 for preventing falling of the counting object B is provided on the circumference of each placing part 2. COPYRIGHT: (C)2009,JPO&INPIT
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