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人教版高中数学选修3离散型随机变量及其分布列(1)教学设计
4.写出下列随机变量可能取的值，并说明随机变量所取的值表示的随机试验的结果．(1)一个袋中装有8个红球，3个白球，从中任取5个球，其中所含白球的个数为X.(2)一个袋中有5个同样大小的黑球，编号为1,2,3,4,5，从中任取3个球，取出的球的最大号码记为X.(3). 在本例(1)条件下，规定取出一个红球赢2元，而每取出一个白球输1元，以ξ表示赢得的钱数，结果如何？[解] (1)X可取0,1,2,3.X＝0表示取5个球全是红球；X＝1表示取1个白球，4个红球；X＝2表示取2个白球，3个红球；X＝3表示取3个白球，2个红球．(2)X可取3,4,5.X＝3表示取出的球编号为1,2,3；X＝4表示取出的球编号为1,2,4；1,3,4或2,3,4.X＝5表示取出的球编号为1,2,5；1,3,5；1,4,5；2,3,5；2,4,5或3,4,5.(3) ξ＝10表示取5个球全是红球；ξ＝7表示取1个白球，4个红球；ξ＝4表示取2个白球，3个红球；ξ＝1表示取3个白球，2个红球．
人教版高中数学选修3离散型随机变量及其分布列(2)教学设计
温故知新 1.离散型随机变量的定义可能取值为有限个或可以一一列举的随机变量,我们称为离散型随机变量.通常用大写英文字母表示随机变量,例如X,Y,Z;用小写英文字母表示随机变量的取值,例如x,y,z.随机变量的特点: 试验之前可以判断其可能出现的所有值，在试验之前不可能确定取何值；可以用数字表示2、随机变量的分类①离散型随机变量:X的取值可一、一列出；②连续型随机变量:X可以取某个区间内的一切值随机变量将随机事件的结果数量化．3、古典概型:①试验中所有可能出现的基本事件只有有限个；②每个基本事件出现的可能性相等。二、探究新知探究1.抛掷一枚骰子,所得的点数X有哪些值？取每个值的概率是多少？ 因为X取值范围是{1，2，3，4，5，6}而且"P(X=m)"=1/6,m=1,2,3,4,5,6.因此X分布列如下表所示
人教版高中数学选择性必修二变化率问题教学设计
导语在必修第一册中，我们研究了函数的单调性，并利用函数单调性等知识，定性的研究了一次函数、指数函数、对数函数增长速度的差异，知道“对数增长” 是越来越慢的，“指数爆炸” 比“直线上升” 快得多，进一步的能否精确定量的刻画变化速度的快慢呢，下面我们就来研究这个问题。新知探究问题1 高台跳水运动员的速度高台跳水运动中，运动员在运动过程中的重心相对于水面的高度h(单位：m)与起跳后的时间t(单位：s)存在函数关系h(t)＝－4.9t2＋4.8t＋11.如何描述用运动员从起跳到入水的过程中运动的快慢程度呢？直觉告诉我们，运动员从起跳到入水的过程中，在上升阶段运动的越来越慢，在下降阶段运动的越来越快，我们可以把整个运动时间段分成许多小段，用运动员在每段时间内的平均速度v ?近似的描述它的运动状态。
人教版高中数学选修3分类变量与列联表教学设计
一、 问题导学前面两节所讨论的变量,如人的身高、树的胸径、树的高度、短跑100m世界纪录和创纪录的时间等,都是数值变量,数值变量的取值为实数.其大小和运算都有实际含义.在现实生活中,人们经常需要回答一定范围内的两种现象或性质之间是否存在关联性或相互影响的问题.例如,就读不同学校是否对学生的成绩有影响,不同班级学生用于体育锻炼的时间是否有差别,吸烟是否会增加患肺癌的风险,等等,本节将要学习的独立性检验方法为我们提供了解决这类问题的方案。在讨论上述问题时,为了表述方便,我们经常会使用一种特殊的随机变量,以区别不同的现象或性质,这类随机变量称为分类变量.分类变量的取值可以用实数表示,例如,学生所在的班级可以用1,2,3等表示,男性、女性可以用1,0表示,等等.在很多时候,这些数值只作为编号使用,并没有通常的大小和运算意义,本节我们主要讨论取值于{0,1}的分类变量的关联性问题.
人教版高中数学选修3一元线性回归模型及其应用教学设计
1.确定研究对象，明确哪个是解释变量，哪个是响应变量；2.由经验确定非线性经验回归方程的模型；3.通过变换，将非线性经验回归模型转化为线性经验回归模型；4.按照公式计算经验回归方程中的参数，得到经验回归方程；5.消去新元，得到非线性经验回归方程；6.得出结果后分析残差图是否有异常 ．跟踪训练1.一只药用昆虫的产卵数y与一定范围内的温度x有关，现收集了6组观测数据列于表中： 经计算得： 线性回归残差的平方和: ∑_(i=1)^6?〖(y_i-(y_i ) ?)〗^2=236,64,e^8.0605≈3167.其中 分别为观测数据中的温度和产卵数，i=1,2,3,4,5,6.(1)若用线性回归模型拟合，求y关于x的回归方程 (精确到0.1）；(2)若用非线性回归模型拟合，求得y关于x回归方程为 且相关指数R2＝0.9522． ①试与(1)中的线性回归模型相比较，用R2说明哪种模型的拟合效果更好 ?②用拟合效果好的模型预测温度为35℃时该种药用昆虫的产卵数.(结果取整数).
人教部编版语文八年级下册课外古诗词诵读教案
预设 “海内存知己，天涯若比邻”一反送别诗伤感悲戚的格调，体现出高远的志趣和旷达的胸怀，表明诚挚的友谊可以超越时空。此句蕴含哲理，给人以莫大的安慰和鼓舞，因此成为远隔千里的朋友间表达深情厚谊的名句。设问3：“气蒸云梦泽，波撼岳阳城”中的“蒸”和“撼”换成“滋”和“摇”好不好？为什么？预设 不好。“蒸”是蒸腾的意思，形象地描绘了洞庭湖雾气蒸腾、湖面浩渺的画面；“撼”是摇撼的意思，描绘出了洞庭湖波涛汹涌似要撼动岳阳城的雄伟壮阔的景象，且“撼”还能传达出诗人面对湖水时心胸似乎也被震荡，从而想要建功立业的主观感受。如果换成“滋”和“摇”则显得境界小、力度弱，没有这样的气势和表达效果。【设计意图】此环节主要采用问题引领的方式，一步步引导学生品味诗歌中的名句和富有表现力的字词，感受古人炼字的智慧，从而更加深入地理解诗歌情感和艺术手法。
人教部编版语文九年级下册课外古诗词诵读（1）教案
《朝天子·咏喇叭》：这篇散曲借咏喇叭，讽刺和揭露了明代宦官作威作福、鱼肉百姓的罪恶行径，表达了对宦官专横跋扈、趾高气扬嘴脸的强烈憎恶之情。（2）根据上面的分析，适当运用轻重音、升降调等朗读技巧，有感情地反复朗读。（3）这几首诗词曲中，你最喜欢哪几句？说说你喜欢的理由，而后有感情地诵读。预设 【示例一】我喜欢“山河千古在，城郭一时非”。这两句以祖国山河万世永存与城郭一时沦陷进行对比，突出诗人对收复大宋江山的信念和对元人的蔑视。【示例二】我喜欢“无限山河泪，谁言天地宽”。从这两句我感受到了作者的满腔悲愤。作者一直盼望明王朝东山再起，可时运不济，命运多舛，恢复国土、重整山河的宏愿一次次落空，令作者感到深深的失望。【示例三】我喜欢“赢，都变做了土；输，都变做了土”。这两句揭示了深刻的道理，意为国家间无论怎样争斗，终究会在历史的长河中渐渐湮灭，在无尽的沧桑中被遗忘，化为沉寂的黄土。经过前面的诵读、品读环节，学生们对这几首诗词已经有了了解，再安排学生背诵，可以使学生印象更深。
人教部编版语文九年级下册课外古诗词诵读（2）教案
【示例二】我喜欢“斫去桂婆娑，人道是，清光更多”。这里的“桂婆娑”指带给人民黑暗的婆娑桂影，它不仅包括南宋朝廷内外的投降势力，也包括了金人的势力。作者在这一句中，运用神话传说，以超现实的奇思妙想，表达渴望扫除黑暗，让光明普照人间的愿望。【设计意图】在这一环节，引导学生先理解词作的意思和情感再诵读，加深学生对词作的印象，提升学生对词作的诵读感悟能力。五、反复诵读，默写诗词1.学生独立背诵。2.同桌互相检查背诵。3.开展背诵比赛。4.集体默写四首词。结束语：诵读古诗词，可以陶冶我们的情操，激发我们的想象力，与古人对话。希望同学课下能自主阅读一些经典古诗词，在感受它们魅力的同时提升我们的文学素养。【设计意图】在前面几个环节，学生已经从不同层次诵读了四首词，对这四首词有了一定的理解。本环节让学生在此基础上用不同方式背诵，加深记忆。
人教部编版语文八年级下册任务三举办演讲比赛教案
本环节通过评委宣布比赛规则和评分细则，为下面比赛活动中，学生学会欣赏和评价演讲打下基础。三、八仙过海赛一赛（主持人组织演讲比赛）演讲比赛的程序：1.各组参赛同学抽签，确定演讲顺序。2.参加比赛的同学按照顺序进行演讲，每位选手演讲完毕，评委现场打分。3.评委根据评分细则评分，去掉最高分和最低分，记分员核算出选手的平均分，并由主持人公布最后得分。4.每位参赛者演讲结束，评委和教师进行简要点评。5.第二轮由每组得分最高的选手进行即兴演讲拉票，决出班级前三名。6.主持人宣布比赛结果。7.活动结束。【设计意图】本环节通过演讲比赛和评价两个活动的交互进行，让学生进一步理解演讲技巧的具体运用方法，从而提高演讲能力。在整个演讲活动中，学生组织活动和实施活动的能力可以得到充分地展现和发挥。四、尺短寸长评一评1.精彩的演讲结束了，在这次演讲比赛中，给你留下深刻印象的演讲有哪些？请说明理由。（生自由发言，对演讲活动进行总结评价）2.在这次精彩的演讲比赛中，大家有哪些收获？请结合活动过程具体来谈。
人教部编版语文九年级下册任务三演出与评议教案
从以下话题中任选其一（也可自选话题），写一篇作文，谈谈自己对剧本和戏剧表演的认识。不少于600字。①我为什么对“他”印象最深②舞台说明不只是“说明”③戏剧冲突面面观④台词应该怎样说⑤肢体语言很重要⑥配角也要演到位⑦“好戏”是配合出来的2.技法点拨。①写作时，结合对剧本和戏剧表演的认识，发表自己的见解和看法，力求明白晓畅，切勿写得深奥晦涩难懂。②阐述认识时，要列举剧本和戏剧表演的实例进行分析，便于读者理解和信服。③涉及把握不准的专业术语需查阅相关资料、典籍，规避错误，以免误导读者。④明确提出观点，筛选典型事例作为依据，分析材料与观点之间的关系。师：无论是选择哪一个话题，都要结合具体的实例进行分析，不能只列条目而无内容。针对某一戏剧或谈人物，或谈舞台说明，或谈矛盾冲突，或谈肢体语言，或谈相互配合等；也可以针对某个话题，列举多部戏剧中具体的一句、一段话，或一幕。
部编版二年级语文下册全册教案及教学反思
在入情入境中诵读成韵 1.配乐范读，想象画面： （1）学生边看插图边听老师配乐朗读，想象诗中所描绘的画面。 （2）学生自由交流想象中的画面，老师激励小结。 预设：山坡上的小草发芽了，嫩绿嫩绿的。黄莺在空中飞来飞去。河堤旁的柳条发芽了，几个下朋友放学回来，趁着东风，赶忙放起了风筝…… 2.借助插图，启发想象：黄莺一边飞一边干什么?（叽叽喳喳地叫）它好像在说什么? 再次启发想象：春风轻轻地吹来，柳条会怎样呢?（轻轻摆动，好像在跳舞陶醉在了美丽的春色里……） 诗人高鼎看到这样的景致写下了这样的诗句：出示“草长莺飞二月天，拂堤杨柳醉春烟”。（学生齐读） 让我们想象着春天的美丽景色，有滋有味地诵读。学生练读、指名读、引读。 3.联系生活，换位体验，：在这样美妙的春光里，沐浴着和煦的春风，（出示儿童放纸鸢图片）孩子们放起风筝，你们放过风筝吗?你放风筝时是怎样的心情?（学生自由发言）
部编版五年级语文下册全册教案及教学反思
初读古诗，整体感知。 1.请同学们用自己喜欢的方式读古诗《四时田园杂兴》（其三十一）。要求借助拼音学会生字，把古诗读正确，读通顺。 2.指名多个学生朗读古诗，师生评议，纠正读得不准确的字音。尤其注意读准“昼、耘”的读音。指导读准多音字“供”（[ gōng ]作动词时，准备着东西给需要的人应用:供应、供给（jǐ）、供求、供需、供销、提供、供不应求。[ góng ]奉献:供养、供献、供奉、供佛、供职；祭祀用的东西:供桌、供品、供果、上供；被审问时在法庭上述说事实:招供、口供、供状、供认、供词。）在诗中读四声。 3.把古诗反复多读几遍，通过查字典、问同学、问老师等方式，结合课文注释，理解诗句中词语的意思，用自己的话说说这首诗大体写了什么。记下不理解的地方和不明白的问题。 4.学生自愿举手发言，其他同学进行评议，也可以做补充发言。全班交流，教师相机引导并小结。
人教版高中语文《劝学》教案
(1)吾尝(曾经)终日而思矣，不如须臾(片刻)之所学也；吾尝肢(踮起脚跟)而望矣，不如登高之博见(看得广)也。(学、思对比，强调了学习的作用；跛望与登高对比，登高的收获大。两例证明利用学习、利用外物的作用。)(2)登高而招(招手)，臂非加长也，而见者(看的人)远(远也看得见)；顺风而呼(呼喊)，声非加疾(快)也，而闻者(听的人)彰(听得更清楚)。(两例证明利用自然条件的作用。)(3)假(借助)舆马者(的人)，非利足(快脚)也，而致(达到)千里；假舟楫者，非能水(善游)也，而绝(横渡)江河。(两例证明利用工具的作用。)(4)君子生(性)非异也，善假(利用)于(对)物(外物)也。连用比喻，得出结论：那些有才德的君子，生来本性与普通人没有什么两样(生非异也)，只是由于他善于利用学得的知识和本领，善于利用处界条件弥补自身的不足，不断提高自己，所以才成为君子的。
中班科学活动 《小火箭上天》课件教案
活动目标：1、引导幼儿探索小火箭上天的原因。2、激发幼儿科学探索的兴趣，培养幼儿科学探索的精神。活动准备：1、物质准备：1) 小火箭人手一个（大可乐瓶上盖一个纸做的圆锥体）。2) 在活动室柱子或墙面上做好不同高度的标记。
小班数学教案：爸爸、妈妈和我（图片标记匹配）
活动目标 1、尝试分辨爸爸妈妈和宝宝的物品，感知物品的大小及其它特征。 2、学会按爸爸妈妈和宝宝的图片标记匹配相应的物品。 1、有初步地关心爸爸妈妈的情感体验。 活动准备： 教具：爸爸妈妈和宝宝的图片各一张，三个人的袜子、衣服等衣物若干。 学具：《幼儿用书》人手一册。 活动过程： 1、这是谁的衣服。 出示爸爸妈妈和宝宝的图片，向幼儿介绍：这是宝宝的一家。引导幼儿观察并说出谁是爸爸，谁是妈妈，谁是宝宝，你是怎么看出来的。 出示实物衣服、裤子等服装图片，请幼儿说说这些是什么？有什么不同？这是谁的衣服？你是怎么知道的？
新人教版高中英语必修3Unit 2 Morals and Virtues-Reading and Thinking教学设计
The topic of this part is “Learn to make choices in life”.The Listening & Speaking & Talking part aims at the moral dilemmas, and this part is about making choices in life. The heroin is Lin Qiaozhi, a famous medical scientist, made a great contribution to our country’s medical care. Most importantly, her life experience can inspire our students whether in studying or the development of career. she had moral dilemmas and life choices, which are similar to the students who will step into society. Besides, Lin has quite good virtues like kindness, self-improvement, insistence, job-loving , generosity and responsibility, which is worth being learned.Concretely, this article is a biography about Lin Qiaozhi. The article tells her whole life according the timeline, among which the life choices is emphasized. For example, whether married or chased her dream, returned home or stayed abroad, family or public, her choices all reflected her faith, spirit, responsibility and devotion.1. Fast reading to get the detailed information about Lin Qiaozhi; careful reading to do the deductive information.2. Learn the reading skills--deductive judgement according the context.3. Study the structure features and language features. 4. Communicate about Lin’s life choices and reflect their own life choices.1. Learn the reading skills--deductive judgement according the context.2. Study the structure features and language features.3. Communicate about Lin’s life choices and reflect their own life choices.Step 1 Lead in---Small talkWhat are some important life choices?Importance choices: university study, jobs and marriage partners. Because they can determine our future.
新人教版高中英语必修3Unit 3 Diverse Cultures-Reading for Writing教学设计
The topic of this part is “Describe a place with distinctive cultural identity”.This section focuses on Chinese culture by introducing Chinatown, whose purpose is to show the relationship between the Chinese culture and American culture. The Chinese culture in Chinatown is an important part of American culture. Chinatown is an important window of spreading Chinese culture and the spirit homeland of oversea Chinese, where foreigners can experience Chinese culture by themselves.Concretely, the title is “Welcome to Chinatown!”, from which we can know that the article aims at introducing Chinatown. The author used the “Introduction--Body Paragraph--Conclusion” to describe the people, language, architecture, business, famous food and drinks and people’s activities, which can be a centre for Chinese culture and shows its unique charm.1. Read quickly to get main idea; read carefully to get the detailed information.2. Learn the characteristics of writing and language.3. Learn to introduce your own town according to the text.4. Learn to correct others’ writing.1. Learn the characteristics of writing and language.2. Learn to introduce your own town according to the text.Step 1 Lead in ---Small talkIn the reading part, we mentioned the Chinatown of San Francisco. How much do you know about Chinatown of San Francisco ?Chinatown is a main living place for Chinese immigrants, where you can see many Chinese-style buildings, costumes, operas, restaurants, music and even hear Chinese.Step 2 Before reading ---Predict the contentWhat is the writer’s purpose of writing this text ? How do you know ?From the title(Welcome to Chinatown) and some key words from the text(tourist, visit, visitors, experience), we can know the purpose of the text is to introduce Chinatown and show the relationship between Chinese culture and American culture.
新人教版高中英语必修3Unit 1 Festivals and celebrations-Discovering Useful Structure教学设计
4.That was an experience that frightened everyone. →That was _____________________. 答案：1. taking 2. being discussed 3. in the reading room 4. a frightening experienceStep 6 The meaning and function of V-ing as the predicative动词-ing形式作表语，它通常位于系动词后面，用以说明主语“是什么”或“怎么样”一种表示主语的特质、特征和状态, 其作用相当于形容词; 另一种具体说明主语的内容, 即主语等同于表语, 两者可互换。The music they are playing sounds so exciting. 他们演奏的音乐听起来令人激动。The result is disappointing. 结果令人失望。Our job is playing all kinds of music. 我们的工作就是演奏各种音乐。Seeing is believing. 眼见为实。Step 7 Practice1. It is ________(amaze) that the boy is able to solve the problem so quickly.2. Buying a car is simply _______(waste) money. 3. Please stop making the noise—it’s getting ________(annoy). 4. complete the passage with the appropriate -ing form.La Tomatina is a festival that takes place in the Spanish town Bunol every August. I think many food festivals are __________ because people are just eating. however, this festival is _________ because people don't actually eat the tomatoes. Instead, they throw them at each other! the number of people ________ part in this tomato fight, can reach up to 20,000, and it is a very __________ fight that lasts for a whole hour. The _______ thing is how clean Bunol is after the tomatoes are washed away after the fight. this is because the juice form tomatoes is really good for making surfaces clean!答案：1. amazing 2. wasting 3. annoying4. boring interesting taking exciting amazing
新人教版高中英语必修3Unit 1 Festivals and Celebrations-Reading and Thinking教学设计
The topic of this part is “Discover the reasons for festivals and celebrations.The Listening & Speaking & Talking part aims at talking about the experiences and feelings or emotions about the festivals and celebrations. This section aims at detecting the reason why the people celebrate the festivals, the time, the places, the types and the way of celebrations. It also explains why some traditions in the old celebrations are disappearing, like the firecrackers in the big cities and some new things are appearing like the prosperity of business or commerce. 1. Students can talk about what festivals they know and the reasons and the way of celebrating them.2. Students should learn the reading skills such as the headline and get the topic sentences, the structures of articles.3. Students can understand the past, the present situation of some festival around the world and why there are some changes about them. 4. Students can have the international awareness about the festivals.1. Students should learn the reading skills such as the headline and get the topic sentences, the structures of articles.2. Students can understand the past, the present situation of some festival around the world and why there are some changes about them.Step 1 Lead in---Small talkWhat festival do you like best ? Why ?I like the Spring Festivals because I can set off the fireworks, receive the lucky money and enjoy the Gala with my families.Step 2 Before reading---Pair workWhy do people celebrate different festivals ?The Spring Festivals is to celebrate the end of winter and the coming of spring and new life.The Mid-autumn Day is to celebrate the harvest and admire the moon.
新人教版高中英语必修3Unit 1 Festivals and Celebrations-Listening &Speaking＆Talking教学设计
The theme of this section is “Talk about festival activities and festival experiences”.Festival and holiday is a relaxing and interesting topic for students. This part talks about the topic from the daily life of students’. In the part A ---Listening and Speaking, there are three conversations among different speakers from three countries(Japan, Rio and China), where the speakers are participating in or going to participate in the festivals and celebrations. So listening for the relationship among them is a fundamental task. Actually, with the globalization and more international communication, it is normal for Chinese or foreigners to witness different festivals and celebrations in or out of China. In the Conversation 1, a foreign reporter is interviewing a Japanese young girl who just had participated in the ceremony of the Coming-of-Age Day on the street and asking her feeling about the ceremony and the afterwards activities. Conversation 2, Chinese girl Li Mei is witnessing the Rio Carnival for the first time, and her friend Carla gives her some advice on the costumes which enables her to match with the carnival to have a good time. Conversation 3, a Chinese guide is showing a group of foreign visitors around the Lantern Festival and introducing the customs of the festival to them. The three conversations have a strong vitality and insert the festival and cultural elements from different countries. So perceiving the festivals and cultures from different countries is the second task. At the same time, the scripts also insert the targeted grammar --- v-ing as attributive and predicative, which students can perceive and experience in a real context and make a road for the further study. That is the third task. In the Part B--- Listening and Talking, the theme is “Talk about festival experience”, which is the common topic in our daily conversations. During the conversation, Song Lin, a Chinese student, asked Canadian friend Max about how to spend Christmas. In the conversation, Song Lin talked about experience and the feelings during the Chinese Spring Festival, during which there are not only some enjoyable things but some unpleasant things. After the listening, perhaps students find there are some similarities between Christmas and the Chinese Spring Festival as there are some differences in the origins and celebrations. For example, people always visit friends and relatives, decorate their houses, have a big dinner together, chat and give presents to each other.
