磁性分数盘演示器分子分母认知加减法运算三年级小学数学教具玩具 MF-磁性分数本
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磁性分数盘演示器分子分母认知加减法运算三年级小学数学教具玩具 MF-磁性分数本
| 颜色(Color) | multicolor |
| 尺寸(Size) | 18cmx1.5cmx22cm |
| 材质(Material) | Paper |
| 年龄层(Age Level) | 8-11 Years |