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同上一堂课0409三年级[数学]什么是面积-面积单位
同上一堂课0409三年级[数学]什么是面积-面积单位
同上一堂课【三年级】38/68
![同上一堂课0408三年级[语文]纸的发明](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/999f178e343744daa7c8910747982a1a~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=d4bnTEwXjUMFb66v3N9RsQ%2FJeaI%3D)
App29:21![同上一堂课0409三年级[数学]什么是面积-面积单位](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/8bf91038ee854398a5a7412376cdfd6c~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=Okyj0hl%2BE%2BJ2QU9fXImkMN%2BZL%2FQ%3D)
App29:40![同上一堂课0410三年级[语文]赵州桥](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/dd0cec5d0b8d4a5e85dc6b112ec0f91d~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=t4yMNwfZNIwA7fg0JmVRJzfbHzg%3D)
App29:43![同上一堂课0413三年级[英语]Unit 3 Lesson 5-6](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/e68cddef4be645398cbfef3727ef6a5d~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=x4RicKfTESGEkJ99NzDqJHBoH2A%3D)
App29:45![同上一堂课0414三年级[语文]画-综合性学习](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/055ae72266d64deb80f40bf971acb7a9~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=TB72wiWpxOS5l0aeCqwoFGYdLLs%3D)
App29:46![同上一堂课0415三年级[数学]长方形的面积](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/52de395d1f594fcb9ba684ce4777649e~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=A4SIq%2BrWbyN3Gs3e22qR7iLD5zE%3D)
App29:46![同上一堂课0416三年级[音乐]我是小音乐家-进行曲](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/300fe7de392c487b93b487e913217912~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=HC2RupE8dWcQgCyq4qw%2Be8B1ROo%3D)
App29:45![同上一堂课0417三年级[语文]花钟](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/fca28f6fdfad4bbfa0ac60961fdb7579~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=moY8Ldo4ZW8aiZL7O461l58woNo%3D)
App29:45![同上一堂课0420三年级[英语]Unit 4 Lesson 1-2](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/ea351a3236d542d2b39b17a8f6a70ed1~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=VSXVbGGz0q4jCiqAEIFlBEVbDa0%3D)
App29:03![同上一堂课0421三年级[语文]蜜蜂](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/325567906e66434996ab42bd0c61c5dd~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=1L5ydGrDQpeT8XWYfyo%2Bfc%2Fmx5I%3D)
App29:19![同上一堂课0422三年级[数学]面积单位换算-长方形面积与周长](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/be4daef782eb471481e3bd513cb7bdd4~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=TAx%2BbnXYR%2Bl%2B38xSiL%2FtZHHyQNY%3D)
App29:06![同上一堂课0423三年级[数学]游园-有趣的推理](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/9a055cb1964e452fa229afea1304b0ce~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=qJ2asvfKnMO3rKNhbxsdyjE21vg%3D)
App29:34![同上一堂课0424三年级[语文]小虾-习作](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/2d61e41f7d674bf2b0175de3e17aab6d~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=ls9%2BmOvt0AWGK0S2ju%2B8Ay4%2BbRI%3D)
App28:36![同上一堂课0426三年级[语文]宇宙的另一边](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/4a475ad5be354e38858984ca3266a451~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=6GrqMP68fcdx4Qil%2BIcipAZX6SY%3D)
App29:24![同上一堂课0427三年级[科学]点亮小灯泡-简单电路](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/5526120124cc40abb1aae992315d642f~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=CvCgMM7IsefyZtK2pp1TNVLb0zs%3D)
App29:59![同上一堂课0428三年级[语文]我变成了一棵树](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/041f58a8c3a7406fbe05e25b191b9ce7~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=%2B%2FyLDqv6CJgXiTETvyDAboeYUkE%3D)
App29:58![同上一堂课0429三年级[数学]分一分](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/f2f537253afd4a77b433b79ccad802c7~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=tP7FZXDpqSMMCuw1Vi8M8lphQtA%3D)
App29:52![同上一堂课0430三年级[英语]U4L3-U5L1](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/7d6fc0d8bb684ff7a6890da2842c26a5~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=OPs%2BMXXVumeUyZ4sbw28CAX2eho%3D)
App30:00![同上一堂课0506三年级[语文]童年的水墨画-我不能失信](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/74d4d2f518ad410f9442398e78d9b8b0~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=s4DPTv6xijqKFWhqq%2BXb%2Fc%2BhXCw%3D)
App29:32![同上一堂课0507三年级[美术]多姿多彩的塔](http://p26-sign.bdxiguaimg.com/tos-cn-p-0026/e6ff55ddb1653047557a2cd84da16f89~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=uFaW2dFicCKfHHT6%2BdSKDYOdlGU%3D)
App29:25![同上一堂课0508三年级[语文]剃头大师](http://p26-sign.bdxiguaimg.com/tos-cn-p-0026/5540bec16b0e20ac5741bb8085fae026~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=pQylcRqSNsdVikhUmT3ErqQdmKk%3D)
App29:59![同上一堂课0509三年级[英语]Unit 5 Lesson 2-3](http://p3-sign.bdxiguaimg.com/tos-cn-p-0026/8940744df5cea7a86ce508b2143f3291~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=f6EHfykpsvlGyki%2BrskPY9Ks%2FgM%3D)
App29:56![同上一堂课0511三年级[语文]肥皂泡](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/337f6ce1468140cfb43c6511d55ce203~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=oIWcJMj1FAF3qizHci%2BzhdNKRBM%3D)
App29:18![同上一堂课0512三年级[英语]Unit 6 Lesson 1-2](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/ad822d377ba14132ba26664c3b3109f5~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=AqM0giumBlaOy6NsrN%2BbIrWJ0tc%3D)
App28:07![同上一堂课0513三年级[数学]比大小-吃西瓜](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/e829ac5db51d417d919b3b74333a1da3~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=xz1yIB6J14VB9MrxRtck7FB3jDE%3D)
App29:09![同上一堂课0514三年级[实践]诚实守信劳动者交流会](http://p26-sign.bdxiguaimg.com/tos-cn-p-0000/b5e6fa99356b4beeada9ac4d66b6ab25~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=mLN4fEh6UMqWE%2BjinFEArBxISuY%3D)
App29:44![同上一堂课0515三年级[语文]我们奇妙的世界](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/4149742635474010bf0e09412ec350de~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=STnRAhpsNUFdZNiKOghFH8wsIvs%3D)
App29:34![同上一堂课5月18日三年级[数学]小小鞋店-快乐成长](http://p3-sign.bdxiguaimg.com/tos-cn-p-0026/73d1c2fbc04409b3219f728aedb7f26d~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=F0X%2BieFepDnEhVuPi59UIyr8LLI%3D)
App29:52![同上一堂课5月19日三年级[语文]海底世界](http://p26-sign.bdxiguaimg.com/tos-cn-p-0026/ca5a25474ea814cef3667969d479802d~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=LDB3CffAXVnUg0IeWC4Y4L7Zh9A%3D)
App29:40![同上一堂课5月20日三年级[英语]Unit6 Lesson 3-Story Time](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/f672655333fd4452a2ba2c90c315e3a8~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=VUcHawaXDjby05LowWfMPSVB26I%3D)
App29:26![同上一堂课5月21日三年级[语文]火烧云](http://p3-sign.bdxiguaimg.com/tos-cn-p-0000/5651a89e8c1f4088bc0a8e64a1e61adc~tplv-pk90l89vgd-crop-center:576:324.jpeg?appId=3586&biz_tag=list_custom%2Fnone&channelId=0&customType=custom%2Fnone&from=704_middle_image&imageType=list&isImmersiveScene=0&is_ios=1&is_stream=0&lk3s=9d3f5bff&logId=20250221162955DE1B5E0AB5401C9DDBDD&requestFrom=704&version_code=80402&x-expires=1771662596&x-signature=UP07oA%2B5Cnor8Bktwp9Hcv4lTMs%3D)
App30:28打开App观看
