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沪教版 小学数学三年级(下)课本重点讲解 P9-11 + 练习册P10 B级题解析

  • 2026-04-01 13:16:00
沪教版 小学数学三年级(下)课本重点讲解 P9-11 + 练习册P10 B级题解析
让我们一起进步~
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欢迎新朋友

新学期,又有很多新朋友关注了橙子老师的公众号。后台有不少留言问有没有某个年级的电子版教材,有的还在淘宝上搜索购买。其实只要下载APP:沪学习,一年级至九年级的语、数、英课本就全有啦,完全免费,而且还有完整的练习册,已经改版的最新一年级和六年级课本也都全新上架,家长再也不用去淘宝搜索购买了。

橙子老师的公众号主要有以下内容:

(新)一年级:各单元家庭自测

(新)二年级:陆续更新与新教材配套的《同步练习》答案与辅导(家长版)

三年级:课本教学重难点视频+练习册B级题分析讲解视频

四年级:预习重难点讲解视频;

练习册分析讲解视频

五年级:预习重难点讲解视频;

练习册分析讲解视频

年级:小初衔接内容重难点讲解视频

此外,还有2~5年级的易错题分析讲解

今年寒假橙子老师新推出了

四年级寒假口算训练册(巩固四上口算)

五年级寒假口算训练册(巩固五上口算)

有需要的请阅读链接文章:

四年级寒假口算训练册

五年级寒假口算训练册

六年级旧教材有预习重难点讲解视频,对应新教材的章节可以查看使用。新的六年级预习讲解不再制作,有需要的可以到官网:

上海空中课堂https://basic.sh.smartedu.cn/

进行学习。

五、六年级衔接知识点共两章,可以站内搜索“小初衔接”找到。

使用tips

二、三年级的各位小朋友、家长,大家好!

橙子老师录制的二、三两个年级的课本讲解视频,是为了帮助在学习中有困难,课堂上还未完全听懂的小朋友;或者想指导孩子但不清楚重点是什么,辅导时需要注意什么的家长朋友们

小学低年级是基础,家长指导孩子学习的重点应放在培养孩子良好的学习习惯和正确的学习方法上不要过分追求难度和速度。

指导孩子的过程中要引导孩子对比、找相同点、不同点,题目之间有没有规律可循这些都是重要的数学学习的方法。

此外,在日常生活中多让孩子使用数学,特别是购物、商品价格、比大小、比轻重、比速度、看时间这一类生活问题经验的积累会有效帮助孩子提高综合解决数学应用题的能力。

下册除了教材讲解,橙子老师还增加了教材配套的练习册B级题的视频讲解分析。希望各位小朋友、大朋友们继续支持橙子老师,同时分享给有需要的朋友!

如果你发现讲解的过程中有任何问题和疑惑,请在后台给我留言,橙子老师会尽快处理的!

记住:橙子老师会一直在这里与你一起成长哟!

视频

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重点

1、能根据相同时间或相同距离比速度的快慢。

2、理解速度的含义,学习速度的单位,并能某个速度表示的含义。

给家长的tips

1、能根据平时的经验比较相同距离、或者相同时间情况下速度的快慢。这在今后的判断题中会经常出现。

2、如果时间、路程都不同,一般就要求出单位时间谁行的路程多,这就是速度。

实际解决问题时,要能根据不同的情况进行分析比较,采用最简便的方法。

配套练习册 B级题

解析:

已知条件的单位是千米/分

要求的问题单位是米/分

我们需要先统一长度单位

1千米=1000米

公共汽车的速度:1000÷2=500(米/分)

 如果有所帮助,点个在看吧~

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  1. CONNECT:[ UseTime:0.000585s ] mysql:host=127.0.0.1;port=3306;dbname=c_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000835s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000337s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000292s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000636s ]
  6. SELECT * FROM `set` [ RunTime:0.000230s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000560s ]
  8. SELECT * FROM `article` WHERE `id` = 464460 LIMIT 1 [ RunTime:0.000512s ]
  9. UPDATE `article` SET `lasttime` = 1775561035 WHERE `id` = 464460 [ RunTime:0.007750s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000344s ]
  11. SELECT * FROM `article` WHERE `id` < 464460 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000609s ]
  12. SELECT * FROM `article` WHERE `id` > 464460 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000415s ]
  13. SELECT * FROM `article` WHERE `id` < 464460 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001047s ]
  14. SELECT * FROM `article` WHERE `id` < 464460 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002446s ]
  15. SELECT * FROM `article` WHERE `id` < 464460 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002193s ]
0.093282s