《可能性》授导型教案.pdf
《《可能性》授导型教案.pdf》由会员分享,可在线阅读,更多相关《《可能性》授导型教案.pdf(8页珍藏版)》请在淘文阁 - 分享文档赚钱的网站上搜索。
1、名师精编优秀教案可能性教学设计章节名称可能性计划学时1 学习内容分析本案例是人教版三年级上册P104的主题图和 P105的例 1、例2。“可能性”这一知识属于“统计与概率”这一知识领域的“概率”范畴,在现实世界中,严格确定的现象十分有限,不确定现象却是大量存在的,而概率论正是研究不确定现象的规律性的数学分支。它通过对数据收集、整理、描述和分析以及对事件发生的可能性的刻画,来帮助人们作出合理的决策,让学生感受数学与生活的联系。学习者分析心理学研究表明:小学生的思维在很大程度上主要还是以形象思维为主,低龄儿童的注意力集中的时间较短。用多媒体辅助教学,创造情境,直观地呈现教学内容,吸引学生的注意。教
2、学目标课程标准:1、初步体验有些事件的发生是确定的,有些则是不确定的。2、对一些简单事件发生的可能性作出描述,并和同伴交换想法。知识与技能:学生初步用“一定”“可能”“不可能”等词语来描述生活中一些事件发生的可能性,感受到生活与数学的联系。过程与方法:学生初步体验有些事情的发生是确定的,有些则是不确定的。情感、态度与价值观:培养学生学习数学的兴趣,形成良好的合作学习的态度以及诚信的态度。教学重、难点及解决措施教学重、难点:通过活动体验有些事件发生的确定与不确定。理解“一定”“可能”与“不可能”。解决措施:从学生喜欢的故事入手,并创建活动让学生亲身参与,由此引导学生对所学问题进行思考,逐步获得新
3、知,从而掌握问题的关键教学设计思路本节课的教学设计内容主要分为四部分:一、创设情境,激发兴趣。二、活动体验,探究问题。三、联系生活,内化提高。四、课堂总结,课后延伸。名师精编优秀教案依据的理论学中做,做中学,引导发现式教学信息技术应用分析知识点学习水平媒体内容与形式使用方式使用效果初步能用“一定”“可能”“不可能”等词语来描述生活中一些事件发生的可能性学生能够根据自己的生活积累,对我们生活中的事物进行判断电脑、题卡使用电脑播放课件的内容、使用题卡进行练习,加深对所学知识的巩固引起学生的兴趣,促进学生积极参与课堂活动,使他们由生动形象的感性知识逐步过渡到对生活的感知生活中的不确定现象教学过程(可
4、续页)教学环节教学内容所用时间教师活动学生活动设计意图一、创设情境,激发兴趣。教师以故事引入,阿凡提智取金币的故事,学生初步感知说明其可能性3 分钟 师:大家都喜欢听故事,那么老师先请同学们听一个有关阿凡提的故事。课件演示(用 flash动画呈现“阿凡提的故事”并配音朗读):时间一天天地过去,眼看就快要过年了,帮财主做了一年长工的阿凡提想向财主要回他十个金币的工钱,可贪心又小气的财主却不想给他,心想:要怎样做才能使阿凡提得不到金币又无话可说呢?财主想啊想啊,终于想出了一个自以为很好的办法。于是他对阿凡提说:“不要说十个,我这里有一箱子的金币,你把里面的金币往上一抛,假如落下后个个都是正面朝上,
5、那这些金币你就可以全拿走了”。“那好啊,你先把金币给我。”阿凡提回答说,于是他把箱子里的金币全都倒出来,玩弄了一会儿)师:这个故事的结果到底会怎么样?阿凡提在八一老爷的面前,是否能够拿到金学生听故事、猜测并说明理由充分运用儿童好奇心强的心理特点,通过熟悉的“阿凡提”提出问题,并告诉学生学会了本节课知识能解决这一问题,从而激发学生的学习兴趣,调动学生的情感,为学习新知打下良好的基础。文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N
6、8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1
7、D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R
8、3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z1
9、0N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9
10、A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P
11、1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8
12、Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3名师精编优秀教案币?你先猜一猜。(学生猜测)这节课咱们就一起来研究可能性(板书课题:可能性)通过这节课的学习,我们就能揭开这个迷底了。二、活动体验,探究问题。以课件为依托,学生体验生活中事物发生的可能性15分钟(一)一定1、猜测。教师出示3 个盒子,让学生猜测:如果从任意一个盒子晨摸一个跳棋可能会摸出什么颜色的棋?一定能摸出红棋吗?2、体验。教师首先让两名学生进行合作,一人摇盒子,一人随便摸棋,教师猜测。3、汇报发现。我下一个将摸到的是什么颜色的棋?你有什么发现?4、推想。为
13、什么从1 号盒子里摸出的棋都是红棋呢?5、验证。打开盒子,观察验证。师:对,因为盒子里装的都是红棋,所以无论你摸多少次得到的都将是红棋。(板书:一定)6、评价。师生共同评价,给予能相互合作、积极参与思考的学生予以奖励。(二)不可能1、猜测。2 号盒里可能会装些什么?(学生猜测)如果谁能摸到红棋,老师将奖励给他一张智慧卡。(教师未猜测体验汇报推想验证评价让学生在活动中学习数学,是课程标准提倡的学习方式。这节课相对于以往的数学课来说,其特殊之处是心体验为核心。学生有很强的好奇心,有强烈的动手欲望,因此我设计了非常开放的学习活动,使学生经历“猜测体验汇报推想验证评价”的过程,引导学生自主探索,合作交
14、流,让学生在活动中学习,在游戏中获得愉快的数学体验,并在体验中有所发现、有所感悟、有所发展。同时,对学习也是有一定梯度的训练,对“一定”我采用的是示范引领,“不可能”采用的是扶一把,“肯能”文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3
15、文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q
16、3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N
17、8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1
18、D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R
19、3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z1
20、0N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3名师精编优秀教案装红棋)2、体验。教师走到学生中间,让学生任意摸棋。3、汇
21、报。通过刚才的过程,你有什么发现?4、推想。为什么从2 号盒子,大家都没有摸到红棋呢?5、验证。打开 2 号盒子,观察。师:对,因为盒子没有红棋,所以你不可能摸到红棋。(板书:不可能)6、评价。奖励。(三)可能1、猜测。刚才,我们在2号盒子里没有放红棋,所以你摸不到红棋,现在我们两个,你一定能摸到红棋吗?2、体验摸棋。3、汇报发现。4、推想结果。5、验证答案。(板书:可能)6、评价总结。猜测体验汇报推想验证评价猜测体验汇报则完成放手让学生自己去感知、体验。文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9
22、 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文
23、档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3
24、W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8
25、K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D3文档编码:CJ3P1R3Q3W5 HG6B8Z10N8K9 ZL1F3M9A1D
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 可能性 授导型 教案
限制150内