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