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01.统一长度单位.mp4 | 2022-05-25 14:02:16 | 48.36 MB | |
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02.认识厘米、用厘米量.mp4 | 2022-05-25 14:02:17 | 38.69 MB | |
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03.认识米、用米量.mp4 | 2022-05-25 14:02:16 | 37.19 MB | |
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04.认识线段、量、画线段.mp4 | 2022-05-25 14:02:15 | 30.15 MB | |
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05.不进位加.mp4 | 2022-05-25 14:02:15 | 39.38 MB | |
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06.进位加.mp4 | 2022-05-25 14:02:16 | 38.34 MB | |
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07.不退位减.mp4 | 2022-05-25 14:02:18 | 31.23 MB | |
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08.退位减.mp4 | 2022-05-25 14:02:17 | 31.72 MB | |
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09.求比一个数多（少）几.mp4 | 2022-05-25 14:02:17 | 32.7 MB | |
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10.连加、连减.mp4 | 2022-05-25 14:02:17 | 32.38 MB | |
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11.加减混合.mp4 | 2022-05-25 14:02:18 | 32.74 MB | |
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12.加、减法估算.mp4 | 2022-05-25 14:02:17 | 33.17 MB | |
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13.认识角、画角.mp4 | 2022-05-25 14:02:19 | 26.84 MB | |
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14.直角的初步认识.mp4 | 2022-05-25 14:02:17 | 33.15 MB | |
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15.角的分类.mp4 | 2022-05-25 14:02:19 | 36.11 MB | |
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16.8、9的加减法.mp4 | 2022-05-25 14:02:18 | 45.7 MB | |
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17.5的乘法口诀.mp4 | 2022-05-25 14:02:17 | 39.3 MB | |
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18.2、3、4的乘法口诀.mp4 | 2022-05-25 14:02:16 | 28.71 MB | |
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19.乘加、乘减.ts | 2022-05-25 14:02:18 | 32.47 MB | |
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20.6的乘法口诀.ts | 2022-05-25 14:02:19 | 36.92 MB | |
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21.用数学.ts | 2022-05-25 14:02:18 | 39.76 MB | |
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22.从不同的位置观察物体.ts | 2022-05-25 14:02:16 | 31.83 MB | |
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23.7的乘法口诀.ts | 2022-05-25 14:02:18 | 38.39 MB | |
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24.8的乘法口诀.ts | 2022-05-25 14:02:17 | 37.87 MB | |
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25.9的乘法口诀.ts | 2022-05-25 14:02:15 | 61.46 MB | |
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26.乘法口诀的应用.ts | 2022-05-25 14:02:17 | 59.12 MB | |
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27.乘法口诀表.ts | 2022-05-25 14:02:19 | 44.01 MB | |
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28.量一量，比一比.ts | 2022-05-25 14:02:18 | 38.67 MB | |
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29.认识时间.ts | 2022-05-25 14:02:18 | 58.45 MB | |
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30.数学广角.ts | 2022-05-25 14:02:17 | 52.61 MB | |
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31.我是歌者.ts | 2022-05-25 14:02:17 | 52.61 MB | |
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32.专题复习：表内乘法.ts | 2022-05-25 14:02:17 | 61.56 MB | |
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33.专题复习：长度单位、加减法与统计.ts | 2022-05-25 14:02:17 | 55.04 MB | |
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34.专题复习：几何实践与数学广角.ts | 2022-05-25 14:02:17 | 55.04 MB |