file:5.mp4 file:S3-17-4.mp4

file:5.mp4 file:如果和谐，这里后面放备用链接.txt

file:5.mp4

file:5.mp4 file:5(1) (2).mp4

file:38 进阶训练—和倍问题四.mp4 file:36 仓库管理员“探探”—和倍问题二.mp4 file:34 最终的阅兵式—等差数列之数阵问题.mp4 file:33 阅兵前的选拔—偶数项和奇数项等差数列的求和技巧.mp4 file:32 小组内部的编号难题—末项和项数公式.mp4 file:31 找毛球比赛的奖励—盈亏问题三.mp4 file:30 古老而神秘的数字军团.mp4 file:28 美砂的开学第一天—盈亏问题一.mp4

file:复习.pdf file:IMG_3711.PNG file:(5)复习例14-例15.mp4 file:测试题.docx file:有趣的观察法.pdf file:(7)有趣的观察法例6.mp4 file:(4)间隔问题例3.mp4 file:(1)认识时间例知识点.mp4

file:点线排布.pdf file:测试.docx file:IMG_3711.PNG file:(7)点线排布例6.mp4 file:(3)基本应用题例2-例3.mp4 file:(1)简单行程知识点.mp4 file:平行四边形和梯形.pdf file:(3)平行四边形和梯形例4-例5.mp4

file:电梯、发车间隔与接送问题.pdf file:IMG_3455.JPG file:不定方程.pdf file:(8)不定方程总结.mp4 file:定义新运算（二）.pdf file:(6)定义新运算例5.mp4 file:(5)比较与估算（二）例3.mp4

file:资料目录.pdf file:IMG_3711.PNG file:(6)周期问题例6.mp4 file:有余数的除法.pdf file:(5)有余数的除法例5.mp4 file:(1)混合运算例1-例2.mp4 file:表内除法（二）.pdf file:(4)图形的运动（一）例4.mp4

file:资料目录.pdf file:小二数【6095】-[1-6]人教版二年级上册数学....mp4 file:趣味数一数【奥数拓展】.doc file:IMG_3711.PNG file:(6)趣味数一数例5.mp4 file:观察物体.doc file:(7)速算与巧算拓展.mp4 file:表内乘法（二）.doc file:(1)表内乘法（一）知识点.mp4 file:角的初步认识.doc file:(4)角的初步认识例4.mp4