| 文件 | 时间 | 大小 | 操作 | |
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01. 因数与倍数.mp4 | 2022-05-25 11:03:57 | 66.49 MB | |
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02.分数的意义.mp4 | 2022-05-25 11:03:57 | 73.52 MB | |
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03.长方体和正方的认识.mp4 | 2022-05-25 11:03:56 | 66.55 MB | |
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04.万以内的加法和减法-加法.mp4 | 2022-05-25 11:03:56 | 54.95 MB | |
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05. 万以内的加法和减法-减法.mp4 | 2022-05-25 11:03:57 | 61.74 MB | |
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06.长方形和正方的周长.mp4 | 2022-05-25 11:03:57 | 77.54 MB | |
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07.除数是一位数的除法.mp4 | 2022-05-25 11:03:57 | 96.54 MB | |
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08.长方形和正方形的面积(1).mp4 | 2022-05-25 11:03:57 | 65.92 MB | |
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08.长方形和正方形的面积.mp4 | 2022-05-25 11:03:56 | 66.22 MB | |
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09.加法交换律.mp4 | 2022-05-25 11:03:57 | 73.06 MB | |
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10.小数点移动引起小数点大小的变化.mp4 | 2022-05-25 11:03:57 | 87.67 MB | |
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101.平移.mp4 | 2022-05-25 11:03:57 | 70.66 MB | |
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102.组合图形面积.mp4 | 2022-05-25 11:03:57 | 59.08 MB | |
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103.折线统计图.mp4 | 2022-05-25 11:03:57 | 73.61 MB | |
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104.位置.mp4 | 2022-05-25 11:03:57 | 59.6 MB | |
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105.等式的性质.mp4 | 2022-05-25 11:03:57 | 40.6 MB | |
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106.观察物体三.mp4 | 2022-05-25 11:03:56 | 63 MB | |
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107.3的倍数特征.mp4 | 2022-05-25 11:03:57 | 69.83 MB | |
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108.容积和容积单位.mp4 | 2022-05-25 11:03:57 | 78.94 MB | |
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109.约分.mp4 | 2022-05-25 11:03:57 | 63.13 MB | |
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11.认识三角形.mp4 | 2022-05-25 11:03:57 | 90.55 MB | |
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110. 分数加减混合运算.mp4 | 2022-05-25 11:03:57 | 86.31 MB | |
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111.方向与位置 (.mp4 | 2022-05-25 11:03:58 | 75.5 MB | |
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111.方向与位置.mp4 | 2022-05-25 11:03:57 | 76.89 MB | |
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112.复式条形统计图.mp4 | 2022-05-25 11:03:57 | 84.47 MB | |
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113.分数和小数的互换.mp4 | 2022-05-25 11:03:57 | 67.38 MB | |
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114.数学广角-找次品.mp4 | 2022-05-25 11:03:57 | 74.78 MB | |
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115.复式折线统计图.mp4 | 2022-05-25 11:03:58 | 75.72 MB | |
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116.图形的运动三.mp4 | 2022-05-25 11:03:57 | 71.73 MB | |
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117.分数四则混合运算.mp4 | 2022-05-25 11:03:57 | 77.42 MB | |
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118.百分数.mp4 | 2022-05-25 11:03:57 | 62.47 MB | |
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119.百分数的相关应用.mp4 | 2022-05-25 11:03:57 | 63.55 MB | |
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12.平行四边形的面积.mp4 | 2022-05-25 11:03:57 | 83.14 MB | |
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120.扇形统计图.mp4 | 2022-05-25 11:03:57 | 80.06 MB | |
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121.圆锥的认识.mp4 | 2022-05-25 11:03:56 | 67.84 MB | |
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122.圆柱的认识.mp4 | 2022-05-25 11:03:57 | 68.7 MB | |
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123.解比例.mp4 | 2022-05-25 11:03:56 | 65.98 MB | |
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125.分数四则混合运算的相关运用.mp4 | 2022-05-25 11:03:57 | 75.71 MB | |
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126.比例尺.mp4 | 2022-05-25 11:03:56 | 64.79 MB | |
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127.反比例.mp4 | 2022-05-25 11:03:57 | 69.08 MB | |
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128.年月日.mp4 | 2022-05-25 11:03:57 | 77.78 MB | |
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129.数学广角-烙饼问题.mp4 | 2022-05-25 11:03:58 | 69.31 MB | |
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13.三角形的面积.mp4 | 2022-05-25 11:03:56 | 79.08 MB | |
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130.倍数与因数.mp4 | 2022-05-25 11:03:57 | 75.05 MB | |
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131.比较图形的面积.mp4 | 2022-05-25 11:03:57 | 69.28 MB | |
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132. 认识底和高.mp4 | 2022-05-25 11:03:56 | 68.59 MB | |
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133. 露在外面的面.mp4 | 2022-05-25 11:03:57 | 82.07 MB | |
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134.倒数.mp4 | 2022-05-25 11:03:57 | 70.25 MB | |
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135.圆的面积2.mp4 | 2022-05-25 11:03:57 | 73.94 MB | |
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136.解决问题的策略-列表法.mp4 | 2022-05-25 11:03:57 | 72.38 MB | |
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137.圆的周长.mp4 | 2022-05-25 11:03:57 | 80.67 MB | |
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138.解决问题的策略-画线段法.mp4 | 2022-05-25 11:03:57 | 75.61 MB | |
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139.圆柱的体积.mp4 | 2022-05-25 11:03:57 | 78.07 MB | |
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14.梯形的面积.mp4 | 2022-05-25 11:03:57 | 79.28 MB | |
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140.鸡兔同笼.mp4 | 2022-05-25 11:03:57 | 81.38 MB | |
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15.2.5的倍数特征.mp4 | 2022-05-25 11:03:57 | 73.74 MB | |
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16.分数的基本性质.mp4 | 2022-05-25 11:03:57 | 82.1 MB | |
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17.同分母分数加减法.mp4 | 2022-05-25 11:03:56 | 74.01 MB | |
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18.异分母分数加减法.mp4 | 2022-05-25 11:03:57 | 74.71 MB | |
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19.圆的周长.mp4 | 2022-05-25 11:03:57 | 102.02 MB | |
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20.圆锥的体积.mp4 | 2022-05-25 11:03:57 | 76.24 MB | |
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21.分数乘整数.mp4 | 2022-05-25 11:03:57 | 93.9 MB | |
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22. 除数是整数的小数除法.mp4 | 2022-05-25 11:03:57 | 86.35 MB | |
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23. 小数除法-一个数除以小数.mp4 | 2022-05-25 11:03:57 | 85.47 MB | |
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24.倍的认识.mp4 | 2022-05-25 11:03:57 | 81.37 MB | |
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25.对称.mp4 | 2022-05-25 11:03:56 | 68.36 MB | |
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26.面积的意义和面积的单位.mp4 | 2022-05-25 11:03:57 | 105.87 MB | |
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27.平行与垂直.mp4 | 2022-05-25 11:03:57 | 85.48 MB | |
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28.可能性.mp4 | 2022-05-25 11:03:58 | 103.3 MB | |
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29.负数.mp4 | 2022-05-25 11:03:57 | 85.24 MB | |
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30.比例的意义和基本性质.mp4 | 2022-05-25 11:03:56 | 71.67 MB | |
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33.笔算乘法-不进位.mp4 | 2022-05-25 11:03:57 | 74.03 MB | |
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34.笔算乘法-进位.mp4 | 2022-05-25 11:03:57 | 68.89 MB | |
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35.笔算乘法.mp4 | 2022-05-25 11:03:57 | 60.46 MB | |
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36.简单小数加减法.mp4 | 2022-05-25 11:03:56 | 70.24 MB | |
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38. 三位数乘两位数.mp4 | 2022-05-25 11:03:57 | 58.95 MB | |
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39.笔算除法.mp4 | 2022-05-25 11:03:57 | 96.04 MB | |
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40.运算定律-乘法分配律.mp4 | 2022-05-25 11:03:56 | 67.13 MB | |
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41.小数加减混合运算.mp4 | 2022-05-25 11:03:57 | 63.41 MB | |
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42. 小数乘整数.mp4 | 2022-05-25 11:03:57 | 77.61 MB | |
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43.简易方程-用字母表示数.mp4 | 2022-05-25 11:03:57 | 83.65 MB | |
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44.循环小数.mp4 | 2022-05-25 11:03:58 | 95.82 MB | |
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45.乘法运算定律.mp4 | 2022-05-25 11:03:56 | 85.33 MB | |
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46.除数是小数的小数除法.mp4 | 2022-05-25 11:03:56 | 87.05 MB | |
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47.一个数除以分数.mp4 | 2022-05-25 11:03:57 | 75.68 MB | |
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48.分数除以整数.mp4 | 2022-05-25 11:03:57 | 78 MB | |
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49.通分.mp4 | 2022-05-25 11:03:57 | 97.48 MB | |
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50.长方形和正方形面积计算.mp4 | 2022-05-25 11:03:56 | 66.73 MB | |
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51.长方体和正方体的体积.mp4 | 2022-05-25 11:03:57 | 92.36 MB | |
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52.圆柱的表面积.mp4 | 2022-05-25 11:03:58 | 81.81 MB | |
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53. 圆的面积.mp4 | 2022-05-25 11:03:57 | 88.4 MB | |
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54. 方程的意义.mp4 | 2022-05-25 11:03:57 | 86 MB | |
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55. 小数加减法.mp4 | 2022-05-25 11:03:56 | 73.25 MB | |
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56. 小数乘小数.mp4 | 2022-05-25 11:03:57 | 103.83 MB | |
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57. 角的认识.mp4 | 2022-05-25 11:03:57 | 91.28 MB | |
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58. 比.mp4 | 2022-05-25 11:03:58 | 85.58 MB | |
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59. 平行于相交.mp4 | 2022-05-25 11:03:58 | 107.63 MB | |
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60. 列方程解决问题.mp4 | 2022-05-25 11:03:57 | 79.17 MB | |
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61. 倒数的认识.mp4 | 2022-05-25 11:03:58 | 125.48 MB | |
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62. 圆的认识.mp4 | 2022-05-25 11:03:57 | 120.29 MB | |
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63. 质数和合数.mp4 | 2022-05-25 11:03:56 | 136.6 MB | |
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65. 最大公因数.mp4 | 2022-05-25 11:03:58 | 107.3 MB | |
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66. 三角形的内角和.mp4 | 2022-05-25 11:03:57 | 97.12 MB | |
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68. 平均数.mp4 | 2022-05-25 11:03:56 | 84.19 MB | |
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69. 体积和体积单位.mp4 | 2022-05-25 11:03:57 | 110.27 MB | |
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70. 解方程.mp4 | 2022-05-25 11:03:57 | 99.17 MB | |
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71. 线和角.mp4 | 2022-05-25 11:03:56 | 97.55 MB | |
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72.两点间的距离和点到直线的距离.mp4 | 2022-05-25 11:03:56 | 74.93 MB | |
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73. 小数的初步认识.mp4 | 2022-05-25 11:03:57 | 43.39 MB | |
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74. 植树问题.mp4 | 2022-05-25 11:03:57 | 110.57 MB | |
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75. 万一上数的认识.mp4 | 2022-05-25 11:03:57 | 139.24 MB | |
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76. 分数与除数的关系.mp4 | 2022-05-25 11:03:56 | 92.87 MB | |
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77.小数的性质.mp4 | 2022-05-25 11:03:58 | 91.39 MB | |
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78.分数乘分数.mp4 | 2022-05-25 11:03:57 | 89.62 MB | |
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79.三位数除以一位数.mp4 | 2022-05-25 11:03:57 | 84.41 MB | |
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80.小数的意义.mp4 | 2022-05-25 11:03:57 | 95.83 MB | |
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81.公顷和平方千米.mp4 | 2022-05-25 11:03:57 | 126.53 MB | |
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82.快捷的物流运输.mp4 | 2022-05-25 11:03:57 | 73.22 MB | |
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83.平行四边形和梯形.mp4 | 2022-05-25 11:03:56 | 56.62 MB | |
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84.长方形和正方形的认识.mp4 | 2022-05-25 11:03:56 | 71.93 MB | |
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85. 几分之一.mp4 | 2022-05-25 11:03:57 | 51.51 MB | |
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86.位置与变化.mp4 | 2022-05-25 11:03:56 | 48.11 MB | |
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87.时、分、秒的认识.mp4 | 2022-05-25 11:03:56 | 54.98 MB | |
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88.数学广角-集合.mp4 | 2022-05-25 11:03:57 | 54.05 MB | |
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89.复式统计表.mp4 | 2022-05-25 11:03:57 | 52.53 MB | |
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90.数学广角-搭配.mp4 | 2022-05-25 11:03:57 | 57.33 MB | |
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91.面积单位间的进率.mp4 | 2022-05-25 11:03:56 | 60.54 MB | |
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92.两、三位数除以一位数.mp4 | 2022-05-25 11:03:57 | 57.71 MB | |
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93.三位数除以一位数.mp4 | 2022-05-25 11:03:57 | 81.54 MB | |
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94.条形统计图.mp4 | 2022-05-25 11:03:57 | 66.05 MB | |
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95.混合运算.mp4 | 2022-05-25 11:03:56 | 66.33 MB | |
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96角的分类.mp4 | 2022-05-25 11:03:57 | 52.55 MB | |
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97.加法运算定律.mp4 | 2022-05-25 11:03:57 | 90.09 MB | |
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99.观察物体.mp4 | 2022-05-25 11:03:57 | 62.27 MB |