方形EVA分数片小学数学分数加减运算问题演示器教具学生教学用具
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方形EVA分数片小学数学分数加减运算问题演示器教具学生教学用具
| 颜色(Color) | multi |
| 尺寸(Size) | max 10cmx10cmx0.5cm |
| 材质(Material) | Paper |
| 年龄层(Age Level) | 4-7 |