-
人教版高中生物必修2伴性遗传说课稿
（1观察图解，色盲基因在性别间是如何传递的呢？（女--女、女--男、男--女）（2）为什么不能由男性传给男性？（色盲基因是在X染色体上，因此色盲基因是随X染色体的传递而传递。）（3）男性的色盲基因怎样才能传给男性呢？（通过女儿，传给外孙即交叉遗传）（4）从图解看色盲在男女中的发病情况怎样？（男性多于女性）（5）从社会调查也是这样，你是否能从基因和染色体的角度加以解释？（提示：女性染色体的构成，结合基因位置及显隐性进行分析）归纳特点：归纳出色盲基因遗传的特点并扩展到X染色体隐性遗传的特点上。色盲基因遗传（X隐性遗传）的特点：（1）男患者多于女患者（2）交叉遗传（3）女病儿子必病，男正女儿必正等。问题探讨：利用“遗传图解”结合“问题链”继续探讨，拓展到抗维生素D即X 染色体显性遗传的特点。（6）色盲基因在X染色体上属隐性基因，子代表现男多于女，对应的正常色觉基因则属于X显性基因，子代表现应如何？（女多于男）
人教版高中生物必修1细胞分化说课稿
在讲述细胞分化的意义时，也可以用实例来解决，工厂的生产车间里不同的工人干着不同的工作，一件产品的产出需要这些工人才能创造出来，一个生物体就像一个车间一样，不同的细胞各司其职，相互合作。工人的分工是主管调解出来的，而不同细胞的出现就是细胞分化的结果，所以说，细胞的分化是生物体发育的基础。在讲到细胞全能性的时候，要多给学生举些关于细胞全能性的例子，如植物组织培养、克隆技术等等，让学生从实际的例子中真正的悟出细胞全能性的含义。此外，还要重视教材中的疑问，适当对题目进行引申,使它的作用更加突出，有利于学生对知识的串联、积累、加工，从而达到举一反三的效果。怎样来解释细胞的全能性呢？这主要以讲授法来解释了，细胞全能性的体现需要在组织或器官离体后才能体现出来，每个细胞都包含着生物体的全套遗传基因，通过基因选择性的表达，使离体的组织或器官通过分裂和分化逐渐发育成完整的植株。
人教版高中生物必修2染色体变异说课稿
四、说教学程序（一）.温故知新、导入新课复习提问:基因突变导致生物变异的原因是什么?回答:基因突变是基因结构发生改变，从而使遗传信息改变，使蛋白质结构改变、生物性状改变，即生物发生了变异。那么，基因是什么?它和染色体又有何关系?回答:基因是有遗传效应的DNA片断，染色体是DNA的载体，基因在染色体上呈线形排列。引出新知:对于一个生物体来说，正常情况下，其染色体的结构和数量都是稳定的。但在自然条件或人为因素的影响下，染色体的结构和数量均会发生改变，从而导致生物性状的改变，这就属于染色体变异。（二）.把握重点、突破难点重点的把握：1、染色体结构的变异播放影片:猫叫综合征幼儿。让学生观察: 患儿哭声轻、音调高，很像猫叫。教师补充: 患儿的征状---两眼较低、耳位低下，存在着严重的智力障碍。阐述病因---染色体片段缺失
人教版高中政治必修1信用工具和外汇说课稿
一、对教材内容的处理根据新课程标准的要求、知识的跨度、学生的认知水平，我对教材内容有增有减。二、教学策略的选用（一）运用了模拟活动，强化学生的生活体验,本框题知识所对应的经济现象，学生已具有了一定的生活体验，但是缺乏对这种体验的深入思考。因此在进一步强化这种体验的过程中进行了思考和认知，使知识从学生的生活体验中来，从学生的思考探究中来，有助于提高学生的兴趣，有助于充分调动学生现有的知识，培养学生的各种能力，也有助于实现理论知识与实际生活的交融。（二）组织学生探究知识并形成新的知识我从学生的生活体验入手，运用案例等形式创设情境呈现问题，使学生在自主探索、合作交流的过程中，发现问题、分析问题、解决问题，在问题的分析与解决中主动构建知识。也正是由于这些认识来自于学生自身的体验，因此学生不仅“懂”了，而且“信”了。从内心上认同这些观点，进而能够主动地内化为自己的情感、态度、价值观，并融入到实践活动中去，有助于实现知、行、信的统一。
人教版高中政治必修1面对经济全球化说课稿
2、传授新知与学生展示（35分钟） 先由老师点出本课的知识点，它包括：(1)经济全球化深入发展：结合课本91-93页理解经济全球化的含义；经济全球化的表现：生产全球化，贸易全球化，资本全球化；跨国公司是实现经济全球化的载体。（跨国公司的含义、目的、作用分别是什么）（2）经济全球化的影响: 经济全球化的实质：以发达资本主义国家为主导的经济全球化；消极影响积极影响；如何应对经济全球化。讲完了知识点，接着回归图片和书本的材料，给学生留下三个问题进行小组讨论：A ：谈谈你感受到的经济全球化B :怎样理解经济全球化是一把“双刃剑”C:假如你是一位企业经营者，面对经济全球化趋势，你会怎么做？先完成讨论的小组可举手示意老师给予检查，老师根据需要抽查同学到讲台进行展示讨论的结果，并对表现突出的小组进行当堂奖励。
人教版高中政治必修1税收及其种类说课稿
在学生明确了税收的含义之后，我将分别对税收的三个基本特征进行解析。在讲解了之后，并分别用实例对其进行说明，加深学生对知识点的印象。最重要的是，总结出关键的字眼，使得学生能够清晰的区分出税收的三个基本特征。将强制性概括为依法征税、依法纳税；无偿性概括为不具有偿还性和返还型；固定性概括为规定应不应纳税、纳什么税、纳多少税。并跟学生指出，强制性是基本前提，无偿性是核心。由此根据书上的内容，推导出税收的三个基本特征相互之间的关系，即：三者缺一不可，统一于税法。而且，无偿性要求强制性，强制性保障无偿性；而无偿性与强制性又共同决定固定性。从而结束新课讲授。3、课堂总结根据板书内容重新回顾本课学习的主要内容，包括税收的含义，以及税收的三个基本特征和它们之间的相互关系。4、作业布置让学生预习税收的种类的内容，尤其是增值税和个人所得税。同时了解父母每月所缴纳的个人所得税和怎么计算的。
人教版高中政治必修2自觉参与说课稿
1.必须明确政治生活的作用 （政治生活与经济生活、文化生活是相辅相成的。政治生活直接影响到人民民主的实现程度，影响全体人民利益，也会影响我们的经济生活、文化生活。）2.需要学习政治知识 （5个有助于）3.需要参加政治实践活动。 （参加政治实践的途径；参加政治实践的意义）（通过情景问题，形成学生如何参与政治生活的方法；通过解决问题，培养学生解决问题的能力和发散思维的能力。）环节四 课堂小结 巩固知识本节课我采用线索性的板书，整个知识结构一目了然，为了充分发挥学生在课堂的主体地位，我将课堂小结交由学生完成，请学生根据课堂学习的内容，结合我的板书设计来进行小结，以此来帮助教师在第一时间掌握学生学习信息的反馈，同时培养学生归纳分析能力、概括能力。
人教版高中政治必修2作出最佳选择说课稿
环节四 模拟演练 情感升华我将让同学们阅读课本22页的材料，并按照所提供的步骤，组织学生举办一次模拟听证会，将学生分为四个小组，分别扮演教育局工作人员、人大代表、学生家长、学校校长的角色。待学生们模拟听证会结束后，我将采访学生，让他们谈谈参加完听证会后的感受，从而利用角色感悟总结落实民主决策的重大意义。这样，学生们在模拟演练中，感悟公民要通过各种渠道参与民主决策，是推进决策科学化、民主化的重要环节。为学生将来参与政治生活积累经验，增强了学生的主人翁意识和社会责任感。环节五 课堂小结 课后延伸我将用多媒体展示本节课的知识框架，并注重引导学生将今天所学新知识与前面知识联系起来，帮助学生从宏观上把握各知识点之间的关系，有利于学生理解记忆。另外，适当的课堂练习能检验学生掌握知识的情况，因此，课堂小结后我将让学生做一些典型的练习，加深学生对本课知识的理解，同时为为下一课的学习做准备。
人教版高中英语必修4Body Language说课稿4篇
Textbook: Senior English for China (Book 4), by Liu Daoyi Time Allotment: 1 period (40 minutes)Date: March 20, 2014Teaching aids: blackboard, Multi-media, Power Point, chalk I. Text Analysis （教材分析）This unit is about body language, and the text selected in the reading part demonstrates the difference and similarity of body language in many parts of the world. Through learning this passage, students are required to raise their awareness of using body language in different parts of the world. As body language is closely related to our daily life, it is easy to arouse students’ interest in learning this text. Reading skills and speaking training are designed around the text.II. Teaching Objectives （教学目标）By the end of the lesson, students will be able to:1. Language Skill Objective（语言技能目标）: develop reading ability （skimming and scanning）as well as speaking ability.2. Cultural Knowledge Objective（文化知识目标）: know about the cultural differences of using body language.3. Affective Objective（情感目标）: increase students’ awareness of using body language correctly in different cultures. III.Teaching Focuses and Difficulties（教学重点和难点）1. Teaching Focuses（教学重点）: the difference and similarity of body language in many parts of the world.2. Teaching Difficulties（教学难点）: develop students’ reading abilities of skimming and scanning and ask the students to show their opinions with fluent English.
人教版高中英语必修1Anne's best friend说课稿
Step 7 Language points 1．Vocabulary (1) go through (2) set down (3) a series of (4) on purpose (5) in order to (6)at dusk (7)entirely (8)face to face 2．Important sentences (1)…I’ve grown so crazy about everything to do with nature. (2)There was a time when … (3)I stayed awake on purpose until … (4)It was the first time … that I’d seen the night … (5)It’s no pleasure looking through … Purpose: 1．Master the required vocabulary and sentence structures. 2．Use them freely. Step 8 Consolidation 1．Find out the topic sentences 2．Retell the text according to the topic sentences Purpose: I want to know if my students understand the text. Step 9 Discussion Imagine you have to go into hiding like Anne and her family, what would you miss most? Giveyour reasons. Purpose: Train Ss’ oral English ability. Step 10 Homework Write an article on Friends. Purpose: 1． Improve the Ss’ writing ability. 2 Train the Ss’ ability of self—teaching and looking up information by themselves. Part 5 Blackboard design（说板书设计）Unit 1 Friendship Reading Anne’s Best Friend 1．Main idea of each paragraph: Para. 1 Anne made her diary her best friend. Para .2 Anne wrote her feelings in her diary. Para .3 Anne missed nature. Para.4 Anne saw the night face to face Para.5 Anne wanted to experience nature outdoors. 2．Listening: Exx.1 P3 3．Discussion: Exx.3 P3 Purpose: 1．Make Ss familiar with the passage 2．Make the design inductive, instructive and artistic.
人教版高中英语必修1English around the world说课稿
(3)v. 给：提出；展现，显现present sb. with sth. ; present sth. to sb. 把. . 交给；颁发；授予present sth. (for sth. )/present sth. to sb. e. g. Om his birthday, his friends presented him a collection of stamps. 在他生日时，他的朋友们送给他一套邮票作为礼物。The sword was presented by the family to the museum. 这家人把宝剑捐赠给了博物馆。The committee will present the final report to Parliament in June. 委员会将在六月向议会提交最后的报告。You need to present yourself better. 你需要更善于展现自己。It is essential that we present a united front. 至关重要的是我们要表现得更加团结。Step 4 ConsolidationT:Now that we have got a general idea of these words and phrases. Lets make up some sentences using them to master them. Suggested sentences:1. Your duties include typing letters and answering the telephone. 2. It is one of the greatest roles that she has played. 3. A large number of people have applied for the job. 4. The number of the panda is declining. 5. I'11 go there, even if I have to walk. 6. He came up to me to ask for a light. 7. The novel is about a family who can't communicate with each other. 8. He based his plan on interests of most people. 9. Why doesn't he make use of his singing talent?Step 5 Summary and homeworkT:Today we dealt with several new words and phrases. After class I hope that youcan read them again and again to keep them in mind. That's all for today. You aredismissed.
人教版高中英语必修2The Olympic Games说课稿2篇
Purpose of my design:To ask the students to do these two tasks will make the Ss predict the story of this passage. As a result, it will deepen Ss’ memory of this story because they will have their own understanding of this story.Step 3. While-readingTask 1. (Individual work _____min)Skimming: ask students to skim the text and the main ideas of each paragraph in this passage. Please read it quickly and then match the sentences with the letters.Task 2. (Individual work _____min)Scanning: read the text quickly and decide the whether the following statements are true or false and give reasons.Task 3. (Pair work _____min)Listen to the tape and fill in the banks. Then read the paragraph with expression to your partner.Task4 (individual work min)Listen to the tape again and write down the main idea in one sentence.Purpose of my design: Enable students to understand the given material better by using different reading skills. And proper competition can arouse the Ss’ interest in English learning. “Task-based” teaching method is used here todevelop the Ss’ ability of communication and also their ability of co-operation will be well trainedStep 4. Post-readingTask 1. (Individual work, pair work, group work, class work; _____min)Discussion (group of 4):1. If you were Hippomenes, would you run against Atlanta?2. Do you think Hippomenes deserved to win the race? Why or why not?Step 5. HomeworkPlease read the story again carefully after class and imagine: What will happen during the race between Hippomenes and Atlanta? Who do you think will win the race? Do you think Atlanta would marry Hippomenes? Write an end for the story with thses questions.Purpose of my design: Homework is so important and necessary for to master the knowledge they learned after class. It will check whether the Ss achieve the teaching aims.Part 5 Blackboard design
人教版高中英语必修5Great scientists说课稿4篇
通过写文章梗概，培养学生综合运用语言的能力，学习用恰当的英语描述科学家的故事。这是本课的教学难点。教师可以使用完形填空的方式来帮助学生整理语篇，从而来降低难度。本课的教学重点的突破方法是：在阅读前，让学生初步了解得出科学观点所需要的基本程序，从而轻松而自然地导入文章的阅读；在阅读过程中，由易到难设计快速阅读和精读的问题，层层推进各种阅读活动，让学生对阅读内容从整体感知到细节理解，最后深层读懂整篇文章，同时加强阅读策略的指导，让每个学生都主动参与课堂教学活动，最终达到提高阅读能力的目的。Step 4 Post-readingGroup Activities四人小组共同合作，在老师的适当指导下，就以下2个问题展开讨论，让学生就所知、所学、所感和所想融入话题，然后抽若干同学代表作小组发言。1. What do you think about John Snow, and what should we learn from him?2. Cholera was 19th century disease, which two diseases are similar to cholera today? Why?
人教版高中英语必修5Life in the Future说课稿5篇
Good afternoon, everyone. It’s my great pleasure to be here sharing my lesson with you. The content of my lesson is Senior English for China Book5 Unit 3 Life in the Future. I’ll be ready to begin this lesson from six parts: Analysis of the teaching material, Analysis of the students, Teaching aims and important and difficult points, Teaching methods and aids, Teaching procedures, and Blackboard design. First, let me talk about the teaching material.Part 1 Analysis of the Teaching Material:This unit is about what human beings’ life will be like in about one thousand years. By studying of this unit, we’ll Enable the students to know the changes in humans’ life and some new inventions bringing about the change and develop the interest in science. This lesson plays an important part in the English teaching in this unit. This is an important lesson in Book Five. From this lesson, it starts asking the Ss to grasp contents of each passage. Therefore, this lesson is in the important position of the teaching material. If the Ss can learn it well, it will be helpful to make the Ss learn the rest of this unit.Part 2 Analysis of the SsAs Senior2 Ss, they are at different levels of English fluency, some of them have lost interest in English. So during the lesson, I arrange a variety of activities to let all of them join in to attract their interest and let them be confident and taste the joy of success.
人教版高中英语必修5The United Kingdom说课稿4篇
Teaching Aims:Knowledge 1. Get the students to learn the useful new words and expressions in this section. Aims:2. Let the students learn about how the UK was formed and the four groups of invaders.1. Develop students’ reading ability and let them learn different Ability reading skills. Aims:2. Enable students to learn to talk about the United Kingdom and the Union Jack Emotional 1. Let students know more about the UK2. Develop students’ sense of cooperative learning Aims:Teaching Important Points:1. Let the students learn about the countries of the United Kingdom and the Union Jack2. Get the students to read the passage and know about how the UK was formed and the four groups of invaders.3. Have the students learn different reading skills.Teaching Difficult Ponts:1. Develop students’ reading ability.2. Enable students to talk about the United Kingdom and the Union Jack.3. Let students learn how the UK was formed geographically and historically.Teaching Methods:Showing pictures, asking, exercising, listening, reading etc.Teaching Aids:A computer,a projector and a blackboard.Teaching Procedures: 1) Show a map of the world, ask students the following questions:Where is the UK?What’s the full name of the UK?2) Ask the students work in pairs to do the quiz on Page 9.Do you want to test how many things you know about the United Kingdom? Let’s have a small test.Using the map on P9, students answer the following questions:?How many countries does the UK consist of? What are they??England is divided into three main areas. Do you know what they are? 1) Scanning (10Minutes )Let the students hold the questions asked in pre-reading and read the passagequickly and then let them do the following exercise.Join lines to the right answer.
人教版高中政治必修4时代的精神的精华说课稿
（二）能力目标培养学生运用哲学理论观察、分析、处理社会问题的能力，增强学生的时代感。（三）情感、态度与价值观目标培养学生与时俱进的思想品质，让学生关注时代、关注现实、关注生活，逐步树立科学的世界观、人生观、价值观。三、说教学重难点：时代精神的总结和升华是本框的难点，虽然学生在文化生活中学习了文化与经济政治的关系，但要让学生得出哲学是时代精神的总结和升华，还要联系前面关于哲学的基础知识进行总结归纳，因此可能会难以把握，另外关于什么样的哲学是真正的哲学的理解会稍有难度。社会变革的先导是本框的重点，一方面哲学源于时代，另一方面强调哲学反过来对时代又有重要的反作用，突出这一点能够更好地激发学生学习哲学的热情和信心，对于后面知识的学习是极为有益的，因此社会变革的先导这一目作重点处理。
人教版高中数学选择性必修二等比数列的概念 (1) 教学设计
新知探究我们知道，等差数列的特征是“从第2项起，每一项与它的前一项的差都等于同一个常数” 。类比等差数列的研究思路和方法，从运算的角度出发，你觉得还有怎样的数列是值得研究的？1.两河流域发掘的古巴比伦时期的泥版上记录了下面的数列:9,9^2,9^3,…,9^10; ①100,100^2,100^3,…,100^10; ②5,5^2,5^3,…,5^10. ③2.《庄子·天下》中提到：“一尺之锤，日取其半，万世不竭.”如果把“一尺之锤”的长度看成单位“1”，那么从第1天开始，每天得到的“锤”的长度依次是1/2,1/4,1/8,1/16,1/32,… ④3.在营养和生存空间没有限制的情况下，某种细菌每20 min 就通过分裂繁殖一代，那么一个这种细菌从第1次分裂开始，各次分裂产生的后代个数依次是2,4,8,16,32,64,… ⑤4.某人存入银行a元，存期为5年，年利率为 r ，那么按照复利，他5年内每年末得到的本利和分别是a(1+r),a〖(1+r)〗^2,a〖(1+r)〗^3,a〖(1+r)〗^4,a〖(1+r)〗^5 ⑥
人教版高中数学选择性必修二导数的四则运算法则教学设计
求函数的导数的策略(1)先区分函数的运算特点，即函数的和、差、积、商，再根据导数的运算法则求导数；(2)对于三个以上函数的积、商的导数，依次转化为“两个”函数的积、商的导数计算．跟踪训练1 求下列函数的导数：(1)y＝x2＋log3x； (2)y＝x3·ex； (3)y＝cos xx.[解] (1)y′＝(x2＋log3x)′＝(x2)′＋(log3x)′＝2x＋1xln 3.(2)y′＝(x3·ex)′＝(x3)′·ex＋x3·(ex)′＝3x2·ex＋x3·ex＝ex(x3＋3x2)．(3)y′＝cos xx′＝?cos x?′·x－cos x·?x?′x2＝－x·sin x－cos xx2＝－xsin x＋cos xx2.跟踪训练2 求下列函数的导数（1）y＝tan x； （2）y＝2sin x2cos x2解析：（1）y＝tan x＝sin xcos x，故y′＝?sin x?′cos x－?cos x?′sin x?cos x?2＝cos2x＋sin2xcos2x＝1cos2x.（2）y＝2sin x2cos x2＝sin x，故y′＝cos x.例5 日常生活中的饮用水通常是经过净化的，随着水的纯净度的提高，所需进化费用不断增加，已知将1t水进化到纯净度为x%所需费用（单位：元），为c(x)=5284/(100-x) (80<x<100)求进化到下列纯净度时，所需进化费用的瞬时变化率：（1） 90% ；（2） 98%解：净化费用的瞬时变化率就是净化费用函数的导数；c^' (x)=〖(5284/(100-x))〗^'=(5284^’×(100-x)-"5284 " 〖(100-x)〗^’)/〖(100-x)〗^2 =(0×(100-x)-"5284 " ×(-1))/〖(100-x)〗^2 ="5284 " /〖(100-x)〗^2
人教版高中数学选择性必修二导数的概念及其几何意义教学设计
新知探究前面我们研究了两类变化率问题：一类是物理学中的问题，涉及平均速度和瞬时速度；另一类是几何学中的问题，涉及割线斜率和切线斜率。这两类问题来自不同的学科领域，但在解决问题时，都采用了由“平均变化率”逼近“瞬时变化率”的思想方法；问题的答案也是一样的表示形式。下面我们用上述思想方法研究更一般的问题。探究1： 对于函数y=f(x) ，设自变量x从x_0变化到x_0+ ?x ，相应地，函数值y就从f(x_0)变化到f(〖x+x〗_0) 。这时， x的变化量为?x，y的变化量为?y=f(x_0+?x)-f(x_0)我们把比值?y/?x，即?y/?x=(f(x_0+?x)-f(x_0)" " )/?x叫做函数从x_0到x_0+?x的平均变化率。1．导数的概念如果当Δx→0时，平均变化率ΔyΔx无限趋近于一个确定的值，即ΔyΔx有极限，则称y＝f (x)在x＝x0处____，并把这个________叫做y＝f (x)在x＝x0处的导数(也称为__________)，记作f ′(x0)或________，即
人教版高中数学选择性必修二等差数列的概念（2）教学设计
二、典例解析例3.某公司购置了一台价值为220万元的设备，随着设备在使用过程中老化，其价值会逐年减少.经验表明，每经过一年其价值会减少d(d为正常数）万元.已知这台设备的使用年限为10年，超过10年 ，它的价值将低于购进价值的5%，设备将报废.请确定d的范围.分析：该设备使用n年后的价值构成数列{an}，由题意可知，an＝an－1－d (n≥2). 即：an－an－1＝－d.所以{an}为公差为－d的等差数列.10年之内（含10年），该设备的价值不小于（220×5%=）11万元；10年后，该设备的价值需小于11万元．利用{an}的通项公式列不等式求解．解：设使用n年后，这台设备的价值为an万元，则可得数列{an}．由已知条件，得an＝an－1－d（n≥2）．所以数列{an}是一个公差为－d的等差数列.因为a1＝220－d，所以an＝220－d＋(n－1)(－d)＝220－nd. 由题意，得a10≥11，a11＜11. 即：{█("220－10d≥11" @"220－11d＜11" )┤解得19<d≤20.9所以，d的求值范围为19<d≤20.9