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人教版新课标高中物理必修2探究弹性势能的表达式教案2篇
“做功的过程就是能量转化过程”，这是本章教学中的一条主线。对于一种势能，就一定对应于相应的力做功。类比研究重力势能是从分析重力做功入手的，研究弹簧的弹性势能则应从弹簧的弹力做功入手。然而弹簧的弹力是一个变力，如何研究变力做功是本节的一个难点，也是重点。首先，要引导学生通过类比重力做功和重力势能的关系得出弹簧的弹力做功和弹簧的弹性势能的关系。其次，通过合理的猜想与假设得出弹簧的弹力做功与哪些物理量有关。最后，类比匀变速直线运动求位移的方法，进行知识迁移，利用微元法的思想得到弹簧弹力做功的表达式，逐步把微分和积分的思想渗透到学生的思维中。本节课通过游戏引入课题，通过生活中拉弓射箭、撑杆跳高和弹跳蛙等玩具以及各种弹簧等实例来创设情景，提出问题。给学生感性认识，引起学生的好奇心；让学生对弹簧弹力做功的影响因素进行猜想和假设，提出合理的推测，激发学生的探索心理，构思实验，为定性探究打下基础。然后，引导学生通过类比重力做功与重力势能的关系得出弹簧弹性势能与弹簧弹力做功的关系。
人教版新课标高中物理必修2探究弹性势能的表达式说课稿4篇
设疑自探：一个压缩或拉伸的弹簧就是一个“储能器”，怎样衡量形变弹簧蕴含能量的多少呢？弹簧的弹性势能的表达式可能与那几个物理量有关？类比：物体的重力势能与物体所受的重力和高度有关。那么弹簧的弹性势能可能与所受弹力的大小和在弹力方向上的位置变化有关，而由F=kl知弹簧所受弹力等于弹簧的劲度系数与形变量的乘积。预测：弹簧的弹性势能与弹簧的劲度系数和形变量有关。学生讨论如何设计实验： ①、用同一根弹簧在几次被压缩量不同时释放（劲度系数相同，改变形变量），观察小车被弹开的情况。②、分别用两根弹簧在被压缩量相同时释放（形变量相同，劲度系数不同），观察小车被弹开的情况。交流探究结果：弹性势能随弹簧形变量增大而增大。随弹簧的劲度系数的增大而增大。
人教版高中语文必修3《文学作品的个性化解读》教案2篇
教学目标：1、了解文学作品解读的个性化及其原因。2、探讨个性化解读遵循的基本原则，合理解读文学作品。教学重点：引导学生关注文学现象，培养他们对文学作品理解的多重思维能力。教学难点：把握个性化的度。避免偏激的理解、过度的张扬所谓个性，严重歪曲文学作品。教学方法：导读、计论、合作探究。教学时间：一课时教学过程：一、创设情境、揭题导入：记得有这样一个故事：一个小孩在四岁就能背《登鹳雀楼》，可平时只有在大人的要求下，他才背出来。直到六岁的某一天，他父母带他去旅游，在他登陆上山顶时，竟然随口背出：“欲穷千里目，更上一层楼”来。这说明了什么？……（讨论）文学作品解读的个性化。二、探讨个性化解读的原因1、读者的差异导致解读的个性化A、同一作品，阅读的时间不同，解读不同。如上面的例子。如《从百草园到三味书屋》和《风筝》主题的多元化理解。“温故知新”，名作重读，不但有趣，而且有益。B、同一作品，不同读者，解读不同。
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）
人教版高中政治必修3建设学习型社会教案
三、第三阶段。课后感悟与收获１、让学生以“走向学习型社会”为题，将在收集与整理、展示与交流两个环节中获得的体验和感悟，以心得体会的形式写一篇小论文。２、办一期专栏或黑板报，将优秀小论文作集中展示与交流。（进行理论总结，将实践与理论相结合，让科学理论更好地指导实践。充分挖掘学生潜力，增强学生的自信）［评析］新课程理念之一就是政治课不应只局限于课堂上的教与学。把综合探究课与研究性学习相结合，不失为一种有益的尝试。传统的学习方式把学习建立在客观性、受动性、依赖性的基础上，把学生看成一个没有感情的接受容器，这种学习会窒息学生的思维和智力，成为学生发展的障碍。单元探究活动的开展就是要转变学生的学习方式，关注学生的学习过程，使得探究过程成为学生发现问题、提出问题、分析问题、解决问题的过程，培养学生的创新精神和实践能力。本教案的第一阶段充分发挥了学生的主动性。
人教版高中政治必修3建设学习型社会说课稿
解析：材料是讲学习型社会所产生的影响，A项观点错误，在当前和今后相当长的时间里，学校教育仍然是人们获得知识的最重要的途径。B项观点错误，终身学习只是成就人生目的的手段、途径，而不是目的本身。D项说法错误，当前我国社会的中心工作是经济建设。二、问答题5.材料一：日本是公认的漫画大国，日本的动漫产业产值每年230万亿日元，成为日本的第二大支柱产业。在日本，漫画比电影、小说有时甚至比电视或音乐更受欢迎。日本漫画的热潮还席卷了世界：日本每年出口到美国的卡通片价值就达5 000亿日元，是日本对美国钢铁出口金额的4倍；漫画中的人物被迅速复制成电子游戏、卡通片及真人演出的节目。原来只是闲暇时候消遣的漫画，正飞速渗透到人们的生活中。值得警惕的是，除了催人奋进的精华之外，日本漫画中也存在暴力、色情、扭曲历史等诸多糟粕，对缺乏辨别能力的青少年产生了许多不良影响，更引发了一系列深刻的社会问题。
人教版高中语文必修3《劝学》教案2篇
五．研习第一段：1．诵读指导要处理好句中停顿2．请学生对照注释翻译本段重点词句：学不可以已已：停止。青，取之于蓝而青于蓝于：从；比。木直中绳中：zhàng符合，合于。虽有槁暴，不复挺者，揉使之然也有通又，揉通煣，以火烘木，使其弯曲。然：这样。翻译：故木受绳则直，金就砺则利，君子博学而日参省乎己，则知明而行无过矣。所以木材经墨线画过（再用斧锯加工）就直了，金属刀剑拿到磨刀石上（磨过）就锋利了，君子广博地学习并且每天对自己检验反省，就能智慧明达，行为没有过错了。3．本段是从哪个角度论述中心论点的？明确：本段是从学习的意义这个角度论述中心论点的。荀子认为人的知识、道德、才能都不是天生成的，而是后天不断学习获得的，学习的意义十分重大，所以学习不能停止。4．本段中几个比喻句是为了说明什么道理？学生讨论发言，教师明确：
人教版高中历史必修3宋明理学教案2篇
二、程朱理学：1、宋代“理学”的产生：（1）含义：所谓“理学”，就是用“理学”一词来指明当时两宋时期所呈现出来的儒学。广义的理学，泛指以讨论天道问题为中心的整个哲学思潮，包括各种不同的学派；狭义的理学，专指程颢、程颐、朱熹为代表的，以“理”为最高范畴的学说，称为“程朱理学”。理学是北宋政治、社会、经济发展的理论表现，是中国古代哲学长期发展的结果，是批判佛、道学说的产物。他们把“理”或“天理”视作哲学的最高范畴，认为理无所不在，不生不灭，不仅是世界的本原，也是社会生活的最高准则。在穷理方法上，程颢“主静”，强调“正心诚意”；程颐“主敬”，强调“格物致知”。在人性论上，二程主张“去人欲，存天理”，并深入阐释这一观点使之更加系统化。二程学说的出现，标志着宋代“理学”思想体系的正式形成。【合作探究】宋代“理学”兴起的社会条件：
人教版高中语文必修2《我有一个梦想》教案2篇
全班齐读第五段内容。请一位同学分析，接着让这位同学按他分析的读一遍。3、4两自然段的平缓之后，第5段作者的情感再次抬升。为了满足这种情感的张扬，作一口气连用了四个排比句式“现在是……时候”，一方面这是情感发泄的需要，另一方面这种排山倒海的语势也加强了内容的表达，极强地突出了现实为自由、平等而战的重要性。四、学会演讲我们刚才细读了课文，但读和讲是有区别的。所谓演讲，是一门语言艺术，它的主要形式是“讲”，即运用有声语言并追求言辞的表现力和声音的感染力；同时还要辅之以“演”，即运用面部表情、手势动作、身体姿态乃至一切可以理解的态势语言，使讲话“艺术化”起来，从而产生一种非凡的艺术魅力。那么，接下来就假设一下假如你是马丁·路德·金，你会怎样去讲这篇演讲辞。
新人教版高中英语必修2Unit 2 Wildlife Protection-Discovering Useful Structure教案一
The activity topic of this section is "report an ongoing event", and the structure is the passive voice of present continuous tense. Rare wild animals are suffering from large-scale poaching, and species are on the brink of danger. Rescue operations are underway. "Being" and "suffering" are the meanings of the present progressive passive voice.The usage of present progressive passive voice is of great importance in writing a good discourse and appreciating some difficult language items, so it is vital to master it and use it flexibly in a context.1. Motivate Ss to deepen the understanding of the usage of present progressive passive voice in a fixed context.2. Enable Ss to master the usage of present progressive passive voice and use it flexibly in a context.3. Lead Ss to construct sentences or appreciate sentences used master it and use it flexibly in a context.1. Help students to appreciate the function of the usage of present progressive passive voice in a sentence2. Instruct students to write essays using the proper usage of present progressive passive voice.Look at the picture and tell me what are workers doing? What is the house being done?
新人教版高中英语必修2Unit 2 Wildlife Protection-Reading and Thinking教案一
The listening and speaking part aims at how to protect and help endangered animals by listening, speaking and talking about the facts and reasons. This lesson analyzes the decreasing clause of Tibetan antelope population and the measures of protecting Tibetan antelopes. So students can be guided to learn to analyse the title and use different reading skills or strategies, like scanning, skimming and careful reading.1. Read quickly to get the main ideas and the purpose of going to Tibetan; read carefully to understand what the author see and think.2. Understand the sentences of the present continuous passive voice such as “Much is being done to protect wildlife.” and the inverted sentence “Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet.”3. Enhance the awareness of protecting wildlife.4. Cultivate the reading methods according to different materials.1. Read quickly to get the main ideas and the purpose of going to Tibetan; read carefully to understand what the author see and think.2. Understand the sentences of the present continuous passive voice such as “Much is being done to protect wildlife.” and the inverted sentence “Only when we learn to exist in harmony with nature can we stop being a threat to wildlife and to our planet.”3. Cultivate the reading methods according to different materials.Step 1 Leading-inWatch a video about elephants and whales and then ask:Why are they endangered ? They are killed/hunted
新人教版高中英语必修2Unit 2 Wildlife Protection-Reading For Writing教案一
1. 标题首先根据海报的特点、格式写明标题。海报中往往把内容作为大标题。例如: Save the earth, Save the birds。2. 正文部分不同的海报其正文部分的侧重点不同。对于介绍性的海报, 首先要引出话题, 其次列出原因, 最后是总结。对于宣传类的海报, 要写明具体内容, 如: 活动内容, 地点以及参加活动的注意事项, 主持或举办单位等。1. 图片: 要选择引人注目的图片, 与主题要相关, 色彩明亮。话题句式 1. It is a treasure of our country. 它是我国的国宝。2. Believe it or not, at present only several thousand pandas exist in the world. 信不信由你, 目前世界上仅现存几千只熊猫。 3.It’s because of human activities that tigers are endangered. 正是因为人类的活动, 老虎处于濒危的状态。4. Many wild animals are in danger of dying out. 很多野生动物面临着灭绝的危险。 5. The government has taken effective measures to protect them. 政府已采取有效的措施来保护它们。6. People should raise the awareness of the protection of wild animals. 人们应该提高保护野生动物的意识。 7. It’s amazing that there are merely less than 1, 000 finless porpoises living in China. 非常令人吃惊, 目前中国仅有不足1 000只江豚。
人教版高中语文必修2《我有一个梦想》说课稿2篇
(2).教学手段为了使我根据教材而设计的三个教学目标以及重点难点得以的突出和突破,达到最大化的展示境界,同时也为了配合以上我选择的四种教法得以完满实现,我决定采用“多媒体”教学手段进行全程教学。利用电脑的信息容量大,操作简便等优点,形象生动的直观展示教学内容,不但提高学习效率和质量,而且容易激发学生的学习兴趣和调动学习的积极性。四、说学法我为学生设计了三个学习方法：1.让学生学会在探究中学。通过“对黑人严酷处境的探究”和对文中重点语句的探究,培养学生在探究中学习的能力。2.让学生学会在读中学。通过“诵读法”指导学生在诵读过程中感受演讲词内在的魅力,学会在读中学。3.让学生学会在练习中学。通过“课外延伸练习法”,对所学的知识进行运用,培养学生的创新和自学能力。
人教版高中历史必修1祖国统一大业教案2篇
教材分析改革开放后我国的综合国力不断增强，人民对祖国统一的愿望越来越迫切。本节课以“一国两制”构想的提出，香港、澳门的回归和海峡两岸关系的发展为中心，说明实现祖国统一，完成中华民族复兴是历史发展的必然。第一目“‘一国两制’构想的提出”主要讲述了“一国两制”的含义及历史意义。第二目“香港、澳门的回归”着重讲述了香港回归、澳门回归的经过及历史意义，这是“一国两制”成功的实践。第三目“海峡两岸关系的发展”讲述了大陆注重发展与台湾的关系，促进海峡两岸的经济文化交流与合作，打破了几十年来海峡两岸的隔绝状态，促进了祖国统一的进程。此外，教材还通过“资料回放”“历史纵横”“学思之窗”等栏目，为学生学习提供了一些详细的史料。在教学中要分析图表资料，引导学生理解完成祖国统一大业，实现中华民族的复兴，是任何人也阻挡不了的历史潮流。
新人教版高中英语必修2Unit 1 Cultural Heritage-Discovering Useful Structure教案一
This teaching period mainly deals with grammar “restrictive relative clauses.” To begin with, teachers should lead students to revise what they have learned about the relative pronouns and relative adverbs. And then, teachers move on to stress more special cases concerning this grammar, such as the “preposition+ relative pronouns which and whom” and cases where we can omit the relative pronouns. This period carries considerable significance to the cultivation of students’ writing competence and lays a solid foundation for the basic appreciation of language beauty. The teacher is expected to enable students to master this period thoroughly and consolidate the knowledge by doing some exercises. 1. Guide students to review the basic usages of relative pronouns and adverbs of attributive clauses.2. Lead students to learn to use some special cases concerning restrictive relative clauses flexibly.2. Enable students to use the basic phrases structures flexibly.3. Strengthen students’ great interest in grammar learning.1. Help students to appreciate the function of relative pronouns and adverbs of attributive clauses in a sentence2. Instruct students to write essays using the proper relative pronouns and adverbs of attributive clauses.本节语法思考：定语从句在复合句中的作用是什么？ 关系词有哪些？定语从句在复合句中的作用相当于形容词，它在句中作定语修饰名词或代词。他们在先行词和定语从句之间起到联系作用，同时在意义上代表先行词并在定语从句中担任一个成分。被定语从句所修饰的词称先行词，定语从句一般放在先行词的后面。
新人教版高中英语必修2Unit 1 Cultural Heritage-Reading and Thinking教案一
The theme of the reading and thinking is about “Understanding how a problem was solved”.The Listening & Speaking & Talking is about international co-work to protect the Mount Tai, in which the students from seven countries came up with many solutions even create the Mount Tai App. This section aims at showing how to solve a difficult and even tough problem about protecting the cultural heritage by the international co-work. So in this section, cultivating students’ international awareness is very clear and important. Concretely, with the economic development, how to balance the protection of cultural relics and social development is a big challenge for human. In the 1950s, the Egyptian government wanted to build the Aswan Dam across the Nile to control floods, produce electricity and water farms. But the proposal led to protests because it would destroy a lot of cultural relics. The Egyptian had no choice but ask the UN for help. Therefore, a international cooperation about how to protect the cultural relics began, which involved the time length about 20 years and a large amount of fund. Then, the problems was solved. 1. Read quickly to get the main idea and the structure of the article; read careful to get detailed information.2. Learn to use the reading strategy---making a timeline3. Learn how to solve a tough problem by asking for help and cooperation4. Have the international awareness and understand the great strength of international cooperation.1. Read quickly to get the main idea and the structure of the article; read careful to get detailed information.2. Learn to use the reading strategy---making a timeline.3. Learn how to solve a tough problem by asking for help and cooperation.
新人教版高中英语必修2Unit 3 The Internet-Discovering Useful Structure教案一
This unit is about the Internet, which has a great influence to our humans and our lives. During the Listening & Speaking & Talking and Reading and Thinking section, the influence in examples has been shown. Thus, use the Present Perfect Tense is appropriate. However, in order to show the justice or weaken the doer of the behavior/action, it’s better to use the Present Perfect Passive Voice than the Present Perfect Tense. Besides, having learned to use the Present Perfect Passive Voice, students can beautify their language in their writing. 1. Learn the structure of the Present Perfect Passive Voice and its functions. 2. Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice. 3. Learn to write sentences with the Present Perfect Passive Voice flexibly according to the context. 1. Learn the structure of the Present Perfect Passive Voice and its functions. 2. Learn to change the sentences with the Present Perfect Passive Voice into the sentences with the Present Perfect Passive Voice. 3. Learn to write sentences with the Present Perfect Passive Voice flexibly according to the context. Step 1 Observe the following sentences, then change the sentences into passive voice.He has been selected to take part in the sports meeting．(肯定句)他已被挑选出来参加运动会。The ink has not been removed from his overcoat．(否定句)墨迹还没有从他外套上去掉。
新人教版高中英语必修2Unit 4 History and Traditions-Discovering Useful Structure教案一
Step 5 Practice一、完成下列句子。1. Judy and I _______________（把车停下来(park)）in an underground car Park near Trafalgar Square, where we could ______________________(让我们的车充电（charge)).2. When we finally reached the service desk to ask for audio guides, we heard it ___________ that there were no audio guides____________(留下，剩下）.3. We__________________________（发现自己对...很惊讶）the large number of visitors and the amount of noise at the entrance of the National Gallery.4. Judy ____________________(眼神专注于） Van Gogh’s Sunflowers. It was hard to approach the painting as there were so many people around.5. She ____________________(把这幅画的复制品装箱（box)） to ensure that it was delivered safely.答案：1.had our car parked get our car battery charged 2. announced left 3. found ourselves very surprised 4. had her eyes fixed on 5. had a copy of the painting boxed二、用过去分词对下列句子进行改写。1. Loch Ness was surrounded by beautiful natural landscape, which made it look amazing.2. Carl and his friend stayed with a generous family who offered them bread with butter and honey that was homemade.3. The family’s ancestors once attended to soldiers who were wounded in the First World War.4. The young people were attracted by the legend of Loch Ness. They watched over the lake with their cameras and binoculars, which were positioned on the hill.答案：1. Loch Ness surrounded by beautiful natural landscape looks amazing.2. Carl and his friends stayed with a generous family who offered them homemade bread with butter and honey.3. The family’s ancestors once attended to wounded soldiers in the First World War.4. The young people attracted by the legend of Loch Ness watched over the lake with their cameras and binoculars positioned on the hill.
新人教版高中英语必修2Unit 3 The Internet-Reading and Thinking教案一
Paragraph 3. Jan decided to start an IT club to teach old people how to use computers and the Internet. Paragraph 4. Jan has started taking online classes to learn more about how to use the Internet to make society better. Paragraph 5. Jan’s life has been greatly improved by the Internet. Step 5: Critical thinking:(1)How do you arrange your time spent on study and the Internet? Is it reasonable? I usually surf the Internet using my mobile phone for only an hour after class, and it is reasonable for me.(2)What are your online activities? Are they safe? I chat with my friends, read news and play games. I never give away my private information so I think they are safe.Step 4: summary Much has been written about the wonders of the World Wide Web. There are countless articles (1)______(tell) us how the Internet has made our lives more convenient. But the Internet has done a lot (2)_____(much) for people than simply make life more convenient. People’s lives (3) _________________(change) by online communities and social networks so far. Take Jan for example, who developed a serious illness that made her (4)_____(stick) at home with only her computer to keep (5)___(she) company. She joined an online group (6)______ she could share problems, support and advice with others. She considered the ability to remove the distance between people as one of the greatest (7)_______(benefit). She was so inspired (8)____ she started an IT club in which many people have been helped. She has started to learn more about how to use the Internet to make society better. Her next goal is to start a charity website to raise money (9)___ children in poor countries. Jan’s life has been (10)______(great) improved by the Internet. Step 5 Homework:Review what we have learned and find out the key language points in the text.
新人教版高中英语必修2Unit 4 History and Traditions-Listening＆Speaking＆Talking教案一
This unit is about history and traditions. From the opening page, we can know that this unit will introduce the history and traditions around the world. As Marcus Garvey says “A people without the knowledge of their past history, origin and culture is like a tree without roots”, it is important for students to realize the importance and value of knowing the history and traditions and their further meanings. And this part ( listening and speaking ) is divided into two parts: Part A---share views on historic sites, Part B ---talk about a visit to a historic tourist destination. By talking with a foreigner, the speakers introduce the historic attractions and their cultures. Part A is that William, a British student, who was going to visit the Confucius Temple and a Chinese student, Xiao Kong, who was going to the Confucius Temple to meet with the members of the research group, went together and exchanged their views on the Confucius Temple, Confucius, Confucius' descendants and Confucius' educational thoughts. Part B is a conversation between Xiao Yan, a youth hostel receptionist and Paul, a backpacker about the feelings and experience after visiting the Chinese famous tourist attraction Pingyao.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to guess the meaning of words in listening; discuss with their peers how to talk about historic spots and great person.3. Instruct students to use functional sentences of showing one’s excitement, surprise and disappointment.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to discuss with their peers the related topics.3. Enable students to use the functional items of showing one’s excitement, surprise and disappointment.