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• file:5-面积问题三-作业解答.mp4
• file:2-逻辑推理四.mp4
• file:9.运筹与优化一.mp4
• file:8. 整数裂项-作业讲解.mp4
• file:020--11-中国剩余定理.mp4
• file:003--2-数系的扩充和无穷集.mp4
• file:001--1-预备知识.mp4
• file:023--作业讲解十二.mp4
• file:14_3.有序思维（二）.mp4
• file:17_有序思维—数正方形和长方形.mp4
• file:03_1.思维自疑问和惊奇开始（二）.mp4
• file:009.8-计算与数感启蒙之除法.mp4
• file:015.14-周期问题.mp4
• file:007.6-聊聊巧算.mp4
• file:017.16-数学启蒙书籍与桌游.mp4
• file:024.23-陪娃题选讲（二）.mp4
• file:010.9-分类计数与有序思考.mp4