| 文件 | 时间 | 大小 | 操作 | |
|---|---|---|---|---|
|
01.看课指引.mp4 | 2024-02-29 14:31:25 | 13.98 MB | |
|
|
02.1.1大数的认识--亿以内的计数单位和数位表.mp4 | 2024-02-29 14:31:25 | 112.64 MB | |
|
|
03.1.2亿以内数的读法 .mp4 | 2024-02-29 14:31:25 | 72.79 MB | |
|
|
04.1.3亿内数的写法 .mp4 | 2024-02-29 14:31:25 | 74.52 MB | |
|
|
05.1.4亿以内数比较大小 .mp4 | 2024-02-29 14:31:25 | 70.9 MB | |
|
|
06.1.5将整万数改写成用“万”作单位 .mp4 | 2024-02-29 14:31:25 | 47.94 MB | |
|
|
07.1.6先求近似数再改写 .mp4 | 2024-02-29 14:31:25 | 62.37 MB | |
|
|
08.1.7数的产生和十进制计数法 .mp4 | 2024-02-29 14:31:25 | 70.36 MB | |
|
|
09.1.8亿以上数的读法.mp4 | 2024-02-29 14:31:25 | 111.8 MB | |
|
|
10.1.9亿以上数的写法和改写.mp4 | 2024-02-29 14:31:25 | 131.11 MB | |
|
|
11.1.10先求近似数再改写.mp4 | 2024-02-29 14:31:25 | 120.42 MB | |
|
|
12.1.11认识算盘--计算器探究规律.mp4 | 2024-02-29 14:31:25 | 123.01 MB | |
|
|
13.1.12大数的认识--专项练习1.mp4 | 2024-02-29 14:31:25 | 104.53 MB | |
|
|
14.1.13大数的认识--专项练习2.mp4 | 2024-02-29 14:31:25 | 100.33 MB | |
|
|
15.1.14大数的认识--专项练习3.mp4 | 2024-02-29 14:31:25 | 72.37 MB | |
|
|
16.2.1认识公顷.mp4 | 2024-02-29 14:31:25 | 167.96 MB | |
|
|
17.2.2认识平方千米.mp4 | 2024-02-29 14:31:25 | 167.67 MB | |
|
|
18.2.3公顷和平方千米--专项练习1.mp4 | 2024-02-29 14:31:25 | 92.75 MB | |
|
|
19.2.4公顷和平方千米--专项练习2.mp4 | 2024-02-29 14:31:25 | 97.6 MB | |
|
|
20.2.5公顷和平方千米--专项练习3.mp4 | 2024-02-29 14:31:25 | 92.86 MB | |
|
|
21.3.1认识线段--直线--射线--角.mp4 | 2024-02-29 14:31:25 | 108.08 MB | |
|
|
22.3.2角的度量.mp4 | 2024-02-29 14:31:25 | 139.44 MB | |
|
|
23.3.3角的分类.mp4 | 2024-02-29 14:31:25 | 105.76 MB | |
|
|
24.3.4画角.mp4 | 2024-02-29 14:31:25 | 126.51 MB | |
|
|
25.3.5角的度量--专项练习1.mp4 | 2024-02-29 14:31:25 | 88.21 MB | |
|
|
26.3.6角的度量--专项练习2.mp4 | 2024-02-29 14:31:25 | 74.77 MB | |
|
|
27.3.7角的度量--专项练习3.mp4 | 2024-02-29 14:31:25 | 303.38 MB | |
|
|
28.4.1三位数乘两位数的笔算（一）.mp4 | 2024-02-29 14:31:25 | 97.9 MB | |
|
|
29.4.2三位数乘两位数的笔算（二）.mp4 | 2024-02-29 14:31:25 | 97.88 MB | |
|
|
30.4.3积的变化规律.mp4 | 2024-02-29 14:31:25 | 99.38 MB | |
|
|
31.4.4单价、数量与总价的关系.mp4 | 2024-02-29 14:31:25 | 110.25 MB | |
|
|
32.4.5速度、时间与路程的关系.mp4 | 2024-02-29 14:31:25 | 122.78 MB | |
|
|
33.4.7三位数乘两位数--专项练习（2）.mp4 | 2024-02-29 14:31:25 | 107.55 MB | |
|
|
34.4.6三位数乘两位数--专项练习（1）.mp4 | 2024-02-29 14:31:25 | 81.69 MB | |
|
|
35.5.1平行与垂直.mp4 | 2024-02-29 14:31:25 | 87.47 MB | |
|
|
36.5.2画垂线.mp4 | 2024-02-29 14:31:25 | 85.03 MB | |
|
|
37.5.3点到直线的距离.mp4 | 2024-02-29 14:31:25 | 81.13 MB | |
|
|
38.5.4画长方形和正方形.mp4 | 2024-02-29 14:31:25 | 78.93 MB | |
|
|
39.5.5认识平行四边形.mp4 | 2024-02-29 14:31:25 | 119.51 MB | |
|
|
40.5.6平行四边形的特性.mp4 | 2024-02-29 14:31:25 | 39.07 MB | |
|
|
41.5.7认识梯形--四边形间的关系.mp4 | 2024-02-29 14:31:25 | 65.89 MB | |
|
|
42.5.8平行四边形与梯形-专项练习.mp4 | 2024-02-29 14:31:25 | 93.83 MB | |
|
|
43.5.9平行四边形与梯形--专项练习.mp4 | 2024-02-29 14:31:25 | 147.76 MB | |
|
|
44.5.10平行四边形与梯形-专项练习3.mp4 | 2024-02-29 14:31:25 | 101.42 MB | |
|
|
45.6.1除数是整十数的口算.mp4 | 2024-02-29 14:31:25 | 101.28 MB | |
|
|
46.6.2两、三位数除以整十数笔算除法.mp4 | 2024-02-29 14:31:25 | 120.68 MB | |
|
|
47.6.3用“四舍”法试商.mp4 | 2024-02-29 14:31:25 | 111.54 MB | |
|
|
48.6.4用“五入”法试商.mp4 | 2024-02-29 14:31:25 | 118.24 MB | |
|
|
49.6.5除数不接近整十数的试商方法.mp4 | 2024-02-29 14:31:25 | 131.63 MB | |
|
|
50.6.6除数是两位数的除法 .mp4 | 2024-02-29 14:31:25 | 75.99 MB | |
|
|
51.6.7商的个位是0的问题 .mp4 | 2024-02-29 14:31:25 | 84.14 MB | |
|
|
52.6.8商不变的规律 .mp4 | 2024-02-29 14:31:25 | 77.76 MB | |
|
|
53.6.9商不变规律中-余数的变化.mp4 | 2024-02-29 14:31:25 | 107.34 MB | |
|
|
54.6.10除数是两位数的除法-专项练习1.mp4 | 2024-02-29 14:31:25 | 87.34 MB | |
|
|
55.6.11除数是两位数的除法-专项练习2.mp4 | 2024-02-29 14:31:25 | 86.55 MB | |
|
|
56.6.12除数是两位数的除法-专项练习3.mp4 | 2024-02-29 14:31:25 | 90.01 MB | |
|
|
57.6.13除数是两位数除法-专项练习.mp4 | 2024-02-29 14:31:25 | 85.46 MB | |
|
|
58.7.1认识条形统计图.mp4 | 2024-02-29 14:31:25 | 81.21 MB | |
|
|
59.7.2条形统计图（2）.mp4 | 2024-02-29 14:31:25 | 83.06 MB | |
|
|
60.7.3条形统计图（3）.mp4 | 2024-02-29 14:31:25 | 123.08 MB | |
|
|
61.7.4条形统计图-专项练习（1）.mp4 | 2024-02-29 14:31:25 | 96.26 MB | |
|
|
62.7.5条形统计图-专项练习（2）.mp4 | 2024-02-29 14:31:25 | 60.12 MB | |
|
|
63.8.1数学广角--沏茶问题.mp4 | 2024-02-29 14:31:25 | 119.41 MB | |
|
|
64.8.2数学广角-烙饼问题.mp4 | 2024-02-29 14:31:25 | 156.65 MB | |
|
|
65.8.3数学广角--烙饼问题2 .mp4 | 2024-02-29 14:31:25 | 25.99 MB | |
|
|
66.8.4数学广角-田忌赛马问题 .mp4 | 2024-02-29 14:31:25 | 82.64 MB | |
|
|
67.8.5数学广角专项练习-（1） .mp4 | 2024-02-29 14:31:25 | 58.76 MB | |
|
|
68.8.6数学广角-专项练习（2） .mp4 | 2024-02-29 14:31:25 | 39.05 MB |