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01.秒的认识.mp4 | 2022-05-25 14:02:19 | 37.59 MB | |
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02.时间的计算.mp4 | 2022-05-25 14:02:18 | 40.18 MB | |
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03.万以内的加减法.mp4 | 2022-05-25 14:02:16 | 60.36 MB | |
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04.估算.mp4 | 2022-05-25 14:02:19 | 59.74 MB | |
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05.毫米、分米的认识.mp4 | 2022-05-25 14:02:19 | 43.04 MB | |
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06.千米的认识.mp4 | 2022-05-25 14:02:17 | 29.49 MB | |
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07.吨的认识.mp4 | 2022-05-25 14:02:15 | 31.57 MB | |
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08.加法（一）.mp4 | 2022-05-25 14:02:17 | 44.92 MB | |
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09.加法（二）.mp4 | 2022-05-25 14:02:18 | 33.45 MB | |
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10.减法.mp4 | 2022-05-25 14:02:19 | 32.26 MB | |
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11.加减法的验算.mp4 | 2022-05-25 14:02:17 | 34.45 MB | |
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12.倍的认识.mp4 | 2022-05-25 14:02:19 | 39.19 MB | |
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13.求一个数的几倍.mp4 | 2022-05-25 14:02:17 | 35.47 MB | |
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14.和倍问题与差倍问题.mp4 | 2022-05-25 14:02:18 | 61.38 MB | |
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15.口算乘法.mp4 | 2022-05-25 14:02:17 | 33.47 MB | |
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16.不进位乘法.mp4 | 2022-05-25 14:02:17 | 48.75 MB | |
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17.进位乘（1）.mp4 | 2022-05-25 14:02:18 | 41.69 MB | |
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18.进位乘（2）.mp4 | 2022-05-25 14:02:19 | 36.56 MB | |
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19.一个因数末尾有0的乘法.ts | 2022-05-25 14:02:18 | 55.18 MB | |
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20.不愉快的请客.ts | 2022-05-25 14:02:16 | 52 MB | |
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21.数字编码.ts | 2022-05-25 14:02:19 | 44.05 MB | |
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22.四边形.ts | 2022-05-25 14:02:17 | 33.68 MB | |
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23.长方形和正方形.ts | 2022-05-25 14:02:17 | 53.12 MB | |
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24.周长及长方形和正方形的周长.ts | 2022-05-25 14:02:17 | 40.63 MB | |
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25.几分之一.ts | 2022-05-25 14:02:15 | 45.55 MB | |
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26.几分之几.ts | 2022-05-25 14:02:16 | 38.03 MB | |
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27.分数的简单计算.ts | 2022-05-25 14:02:18 | 46.43 MB | |
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28.分数的简单应用.ts | 2022-05-25 14:02:18 | 48.5 MB | |
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29.专题复习：加减乘除.ts | 2022-05-25 14:02:18 | 101.31 MB | |
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30.专题复习：测量与时分秒.ts | 2022-05-25 14:02:18 | 72.46 MB | |
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31.专题复习：四边形、分数和可能性.ts | 2022-05-25 14:02:18 | 75.52 MB |