打开App
小学一年级数字下册：第二单元(十几减5、4、3、2[第1课时])
【名师讲解】小学一年级数字下册：第二单元(十几减5、4、3、2[第1课时])
【名师讲解】小学一年级数学（下册）9/18
![【名师讲解】小学一年级数字下册：第一单元(拼一拼[第1课时])](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/3916c5bf2be6432daf685792f38f5b4f~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=2Gb29sl9Zo891u6%2F4%2FdH3jVkEuk%3D)
App09:36![【名师讲解】小学一年级数字下册：第一单元(拼一拼[第2课时])](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/8293985ecc5946e883481e258aab32d3~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=0UETj2qWdyVvtZV8XzlZ%2BvY3v20%3D)
App08:24
App11:54![【名师讲解】小学一年级数字下册：第二单元(十几减9[第1课时])](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/708f2dfb8d404ae49c4c470a23a2af8c~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=nSolUTqwoiyy3h3imONPTSP0NbU%3D)
App11:28![【名师讲解】小学一年级数字下册：第二单元(十几减9[第2课时])](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/23342d82c23247a5aac79ad3c9fda028~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=BHkhbJj2PWmV5ObKwc8RxdoP5mA%3D)
App12:55
App13:37
App13:47
App18:44![小学一年级数字下册：第二单元(十几减5、4、3、2[第1课时])](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/2cf907d09765406080d8e9d0363842cb~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=7xr2wg6UpyLwjEbR37AUEW5QrBg%3D)
App11:11![小学一年级数字下册：第二单元(十几减5、4、3、2[第2课时])](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/b3f33a8b29a24dbbad38d05d6d2a11c6~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=2gtUJRUyvXGjzSLqG%2FDXoTzJmjI%3D)
App13:37![【名师讲解】小学一年级数字下册：第二单元(解决问题[多余信息])](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/6737ed8ef67949aaa00ba83b62c3396b~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=%2BXhA2M84pzfGO5LSOmpwS9lLEUA%3D)
App13:07![【名师讲解】小学一年级数字下册：第二单元(解决问题[相差])](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/cd99cb5afecc485dbb418701a1e38bc9~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=q6vfyDqho4gcNurrTRkyIR9seds%3D)
App14:35![【名师讲解】小学一年级数字下册：第二单元(解决问题[巩固练习])](http://p26-sign.bdxiguaimg.com/tos-cn-i-0004/a19f98e38b484676a25d7c4194aa5940~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=lxgXwfaqNr7anIDtj1osSF5E%2FVE%3D)
App10:11![【名师】小学一年级数字下册：第二单元(整理和复习[第1课时])](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/8fa5cd15dc6241c5b30ad6dcfc116d38~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=vkfvpnus%2B8Ezf0w4B6ANzG9CHMM%3D)
App16:16![【名师】小学一年级数字下册：第二单元(整理和复习[第2课时])](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/a577015fd4da40e28037d9bf7919c0f5~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=Z60nDpZHHQhR%2BqgMYUXM0Z0edFM%3D)
App11:22![【名师】小学一年级数字下册：第二单元(整理和复习[第3课时])](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/7ae0b229a1764ce4b490709bd5b1cc92~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=BaKWTYVTImCB%2Bo5f5Y8vWACTE4U%3D)
App10:28![【名师】小学一年级数字下册：第三单元(分类与整理[第1课时])](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/00a7efc8f71643fdb460e04f3c4a00d4~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=nLLRw8wK7KV0fZ1oyAoMTMsBP0Q%3D)
App09:38![【名师】小学一年级数字下册：第三单元(分类与整理[第2课时])](http://p3-sign.bdxiguaimg.com/tos-cn-i-0004/2f48573ba97646b8a2ebabe1a34eeff3~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=20250314101441401BFA8510CA360B2ED5&requestFrom=704&version_code=80402&x-expires=1773454482&x-signature=0yCJas6cMJcok3q5YUMIUMdo8II%3D)
App10:51打开App观看
