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人教版新課標高中物理必修2探究彈性勢能的表達式教案2篇
“做功的過程就是能量轉化過程”，這是本章教學中的一條主線。對于一種勢能，就一定對應于相應的力做功。類比研究重力勢能是從分析重力做功入手的，研究彈簧的彈性勢能則應從彈簧的彈力做功入手。然而彈簧的彈力是一個變力，如何研究變力做功是本節(jié)的一個難點，也是重點。首先，要引導學生通過類比重力做功和重力勢能的關系得出彈簧的彈力做功和彈簧的彈性勢能的關系。其次，通過合理的猜想與假設得出彈簧的彈力做功與哪些物理量有關。最后，類比勻變速直線運動求位移的方法，進行知識遷移，利用微元法的思想得到彈簧彈力做功的表達式，逐步把微分和積分的思想滲透到學生的思維中。本節(jié)課通過游戲引入課題，通過生活中拉弓射箭、撐桿跳高和彈跳蛙等玩具以及各種彈簧等實例來創(chuàng)設情景，提出問題。給學生感性認識，引起學生的好奇心；讓學生對彈簧彈力做功的影響因素進行猜想和假設，提出合理的推測，激發(fā)學生的探索心理，構思實驗，為定性探究打下基礎。然后，引導學生通過類比重力做功與重力勢能的關系得出彈簧彈性勢能與彈簧彈力做功的關系。
人教版新課標高中物理必修2探究彈性勢能的表達式說課稿4篇
設疑自探：一個壓縮或拉伸的彈簧就是一個“儲能器”，怎樣衡量形變彈簧蘊含能量的多少呢？彈簧的彈性勢能的表達式可能與那幾個物理量有關？類比：物體的重力勢能與物體所受的重力和高度有關。那么彈簧的彈性勢能可能與所受彈力的大小和在彈力方向上的位置變化有關，而由F=kl知彈簧所受彈力等于彈簧的勁度系數(shù)與形變量的乘積。預測：彈簧的彈性勢能與彈簧的勁度系數(shù)和形變量有關。學生討論如何設計實驗： ①、用同一根彈簧在幾次被壓縮量不同時釋放（勁度系數(shù)相同，改變形變量），觀察小車被彈開的情況。②、分別用兩根彈簧在被壓縮量相同時釋放（形變量相同，勁度系數(shù)不同），觀察小車被彈開的情況。交流探究結果：彈性勢能隨彈簧形變量增大而增大。隨彈簧的勁度系數(shù)的增大而增大。
人教版高中語文必修3《文學作品的個性化解讀》教案2篇
教學目標：1、了解文學作品解讀的個性化及其原因。2、探討個性化解讀遵循的基本原則，合理解讀文學作品。教學重點：引導學生關注文學現(xiàn)象，培養(yǎng)他們對文學作品理解的多重思維能力。教學難點：把握個性化的度。避免偏激的理解、過度的張揚所謂個性，嚴重歪曲文學作品。教學方法：導讀、計論、合作探究。教學時間：一課時教學過程：一、創(chuàng)設情境、揭題導入：記得有這樣一個故事：一個小孩在四歲就能背《登鸛雀樓》，可平時只有在大人的要求下，他才背出來。直到六歲的某一天，他父母帶他去旅游，在他登陸上山頂時，竟然隨口背出：“欲窮千里目，更上一層樓”來。這說明了什么？……（討論）文學作品解讀的個性化。二、探討個性化解讀的原因1、讀者的差異導致解讀的個性化A、同一作品，閱讀的時間不同，解讀不同。如上面的例子。如《從百草園到三味書屋》和《風箏》主題的多元化理解。“溫故知新”，名作重讀，不但有趣，而且有益。B、同一作品，不同讀者，解讀不同。
人教版高中生物必修2伴性遺傳說課稿
（1觀察圖解，色盲基因在性別間是如何傳遞的呢？（女--女、女--男、男--女）（2）為什么不能由男性傳給男性？（色盲基因是在X染色體上，因此色盲基因是隨X染色體的傳遞而傳遞。）（3）男性的色盲基因怎樣才能傳給男性呢？（通過女兒，傳給外孫即交叉遺傳）（4）從圖解看色盲在男女中的發(fā)病情況怎樣？（男性多于女性）（5）從社會調查也是這樣，你是否能從基因和染色體的角度加以解釋？（提示：女性染色體的構成，結合基因位置及顯隱性進行分析）歸納特點：歸納出色盲基因遺傳的特點并擴展到X染色體隱性遺傳的特點上。色盲基因遺傳（X隱性遺傳）的特點：（1）男患者多于女患者（2）交叉遺傳（3）女病兒子必病，男正女兒必正等。問題探討：利用“遺傳圖解”結合“問題鏈”繼續(xù)探討，拓展到抗維生素D即X 染色體顯性遺傳的特點。（6）色盲基因在X染色體上屬隱性基因，子代表現(xiàn)男多于女，對應的正常色覺基因則屬于X顯性基因，子代表現(xiàn)應如何？（女多于男）
人教版高中政治必修3建設學習型社會教案
三、第三階段。課后感悟與收獲１、讓學生以“走向學習型社會”為題，將在收集與整理、展示與交流兩個環(huán)節(jié)中獲得的體驗和感悟，以心得體會的形式寫一篇小論文。２、辦一期專欄或黑板報，將優(yōu)秀小論文作集中展示與交流。（進行理論總結，將實踐與理論相結合，讓科學理論更好地指導實踐。充分挖掘學生潛力，增強學生的自信）［評析］新課程理念之一就是政治課不應只局限于課堂上的教與學。把綜合探究課與研究性學習相結合，不失為一種有益的嘗試。傳統(tǒng)的學習方式把學習建立在客觀性、受動性、依賴性的基礎上，把學生看成一個沒有感情的接受容器，這種學習會窒息學生的思維和智力，成為學生發(fā)展的障礙。單元探究活動的開展就是要轉變學生的學習方式，關注學生的學習過程，使得探究過程成為學生發(fā)現(xiàn)問題、提出問題、分析問題、解決問題的過程，培養(yǎng)學生的創(chuàng)新精神和實踐能力。本教案的第一階段充分發(fā)揮了學生的主動性。
人教版高中政治必修3建設學習型社會說課稿
解析：材料是講學習型社會所產(chǎn)生的影響，A項觀點錯誤，在當前和今后相當長的時間里，學校教育仍然是人們獲得知識的最重要的途徑。B項觀點錯誤，終身學習只是成就人生目的的手段、途徑，而不是目的本身。D項說法錯誤，當前我國社會的中心工作是經(jīng)濟建設。二、問答題5.材料一：日本是公認的漫畫大國，日本的動漫產(chǎn)業(yè)產(chǎn)值每年230萬億日元，成為日本的第二大支柱產(chǎn)業(yè)。在日本，漫畫比電影、小說有時甚至比電視或音樂更受歡迎。日本漫畫的熱潮還席卷了世界：日本每年出口到美國的卡通片價值就達5 000億日元，是日本對美國鋼鐵出口金額的4倍；漫畫中的人物被迅速復制成電子游戲、卡通片及真人演出的節(jié)目。原來只是閑暇時候消遣的漫畫，正飛速滲透到人們的生活中。值得警惕的是，除了催人奮進的精華之外，日本漫畫中也存在暴力、色情、扭曲歷史等諸多糟粕，對缺乏辨別能力的青少年產(chǎn)生了許多不良影響，更引發(fā)了一系列深刻的社會問題。
人教版高中語文必修3《勸學》教案2篇
五．研習第一段：1．誦讀指導要處理好句中停頓2．請學生對照注釋翻譯本段重點詞句：學不可以已已：停止。青，取之于藍而青于藍于：從；比。木直中繩中：zhàng符合，合于。雖有槁暴，不復挺者，揉使之然也有通又，揉通煣，以火烘木，使其彎曲。然：這樣。翻譯：故木受繩則直，金就礪則利，君子博學而日參省乎己，則知明而行無過矣。所以木材經(jīng)墨線畫過（再用斧鋸加工）就直了，金屬刀劍拿到磨刀石上（磨過）就鋒利了，君子廣博地學習并且每天對自己檢驗反省，就能智慧明達，行為沒有過錯了。3．本段是從哪個角度論述中心論點的？明確：本段是從學習的意義這個角度論述中心論點的。荀子認為人的知識、道德、才能都不是天生成的，而是后天不斷學習獲得的，學習的意義十分重大，所以學習不能停止。4．本段中幾個比喻句是為了說明什么道理？學生討論發(fā)言，教師明確：
人教版高中歷史必修3宋明理學教案2篇
二、程朱理學：1、宋代“理學”的產(chǎn)生：（1）含義：所謂“理學”，就是用“理學”一詞來指明當時兩宋時期所呈現(xiàn)出來的儒學。廣義的理學，泛指以討論天道問題為中心的整個哲學思潮，包括各種不同的學派；狹義的理學，專指程顥、程頤、朱熹為代表的，以“理”為最高范疇的學說，稱為“程朱理學”。理學是北宋政治、社會、經(jīng)濟發(fā)展的理論表現(xiàn)，是中國古代哲學長期發(fā)展的結果，是批判佛、道學說的產(chǎn)物。他們把“理”或“天理”視作哲學的最高范疇，認為理無所不在，不生不滅，不僅是世界的本原，也是社會生活的最高準則。在窮理方法上，程顥“主靜”，強調“正心誠意”；程頤“主敬”，強調“格物致知”。在人性論上，二程主張“去人欲，存天理”，并深入闡釋這一觀點使之更加系統(tǒng)化。二程學說的出現(xiàn)，標志著宋代“理學”思想體系的正式形成。【合作探究】宋代“理學”興起的社會條件：
人教版高中語文必修2《我有一個夢想》教案2篇
全班齊讀第五段內容。請一位同學分析，接著讓這位同學按他分析的讀一遍。3、4兩自然段的平緩之后，第5段作者的情感再次抬升。為了滿足這種情感的張揚，作一口氣連用了四個排比句式“現(xiàn)在是……時候”，一方面這是情感發(fā)泄的需要，另一方面這種排山倒海的語勢也加強了內容的表達，極強地突出了現(xiàn)實為自由、平等而戰(zhàn)的重要性。四、學會演講我們剛才細讀了課文，但讀和講是有區(qū)別的。所謂演講，是一門語言藝術，它的主要形式是“講”，即運用有聲語言并追求言辭的表現(xiàn)力和聲音的感染力；同時還要輔之以“演”，即運用面部表情、手勢動作、身體姿態(tài)乃至一切可以理解的態(tài)勢語言，使講話“藝術化”起來，從而產(chǎn)生一種非凡的藝術魅力。那么，接下來就假設一下假如你是馬丁·路德·金，你會怎樣去講這篇演講辭。
新人教版高中英語必修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?
新人教版高中英語必修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
新人教版高中英語必修2Unit 2 Wildlife Protection-Reading For Writing教案一
1. 標題首先根據(jù)海報的特點、格式寫明標題。海報中往往把內容作為大標題。例如: Save the earth, Save the birds。2. 正文部分不同的海報其正文部分的側重點不同。對于介紹性的海報, 首先要引出話題, 其次列出原因, 最后是總結。對于宣傳類的海報, 要寫明具體內容, 如: 活動內容, 地點以及參加活動的注意事項, 主持或舉辦單位等。1. 圖片: 要選擇引人注目的圖片, 與主題要相關, 色彩明亮。話題句式 1. It is a treasure of our country. 它是我國的國寶。2. Believe it or not, at present only several thousand pandas exist in the world. 信不信由你, 目前世界上僅現(xiàn)存幾千只熊貓。 3.It’s because of human activities that tigers are endangered. 正是因為人類的活動, 老虎處于瀕危的狀態(tài)。4. Many wild animals are in danger of dying out. 很多野生動物面臨著滅絕的危險。 5. The government has taken effective measures to protect them. 政府已采取有效的措施來保護它們。6. People should raise the awareness of the protection of wild animals. 人們應該提高保護野生動物的意識。 7. It’s amazing that there are merely less than 1, 000 finless porpoises living in China. 非常令人吃驚, 目前中國僅有不足1 000只江豚。
人教版高中語文必修2《我有一個夢想》說課稿2篇
(2).教學手段為了使我根據(jù)教材而設計的三個教學目標以及重點難點得以的突出和突破,達到最大化的展示境界,同時也為了配合以上我選擇的四種教法得以完滿實現(xiàn),我決定采用“多媒體”教學手段進行全程教學。利用電腦的信息容量大,操作簡便等優(yōu)點,形象生動的直觀展示教學內容,不但提高學習效率和質量,而且容易激發(fā)學生的學習興趣和調動學習的積極性。四、說學法我為學生設計了三個學習方法：1.讓學生學會在探究中學。通過“對黑人嚴酷處境的探究”和對文中重點語句的探究,培養(yǎng)學生在探究中學習的能力。2.讓學生學會在讀中學。通過“誦讀法”指導學生在誦讀過程中感受演講詞內在的魅力,學會在讀中學。3.讓學生學會在練習中學。通過“課外延伸練習法”,對所學的知識進行運用,培養(yǎng)學生的創(chuàng)新和自學能力。
人教版高中歷史必修1祖國統(tǒng)一大業(yè)教案2篇
教材分析改革開放后我國的綜合國力不斷增強，人民對祖國統(tǒng)一的愿望越來越迫切。本節(jié)課以“一國兩制”構想的提出，香港、澳門的回歸和海峽兩岸關系的發(fā)展為中心，說明實現(xiàn)祖國統(tǒng)一，完成中華民族復興是歷史發(fā)展的必然。第一目“‘一國兩制’構想的提出”主要講述了“一國兩制”的含義及歷史意義。第二目“香港、澳門的回歸”著重講述了香港回歸、澳門回歸的經(jīng)過及歷史意義，這是“一國兩制”成功的實踐。第三目“海峽兩岸關系的發(fā)展”講述了大陸注重發(fā)展與臺灣的關系，促進海峽兩岸的經(jīng)濟文化交流與合作，打破了幾十年來海峽兩岸的隔絕狀態(tài)，促進了祖國統(tǒng)一的進程。此外，教材還通過“資料回放”“歷史縱橫”“學思之窗”等欄目，為學生學習提供了一些詳細的史料。在教學中要分析圖表資料，引導學生理解完成祖國統(tǒng)一大業(yè)，實現(xiàn)中華民族的復興，是任何人也阻擋不了的歷史潮流。
新人教版高中英語必修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.
新人教版高中英語必修2Unit 3 The Internet-Listening &Speaking＆Talking教案一
Listening and Speaking introduces the topic of “ask about online habits”. Many middle school students have been surfing the Internet for many years, but what they do with the Internet and how much time they spend every day may not be very clear to themselves, nor to other students. This section allows students to investigate their peers' Internet use, which is conducive to their mutual understanding and understanding of the Internet. It can also help them reflect on their own online behavior, learn from other people's good online habits, and get rid of their bad online behavior.The listening text of this section is an investigation interview. The investigators interview specific groups with the same questions to obtain information, so as to understand their views, practices or attitudes on this issue. There are two specific questions: “how much time do you spend online every day? What do you usually do online?”. The answers of the three respondents provide rich and different information, and achieve the purpose of the investigators. The oral discourse structure of survey interviews generally includes greeting and explaining the purpose of the interview, presenting the interview questions and the respondents' answers. Listening and Talking introduces the theme of “choosing the right application ". Listening text is a conversation between Laura and Xiao Bo. In this part of listening, “oink”； “piggy bank” may cause the students' hearing comprehension limitation. Oink refers to sound word and pig's sound. So, add some oink to my piggy bank is often used to describe "making a little money".1. Guide students to understand the content of listening texts in terms of listening for definitions.2. Cultivate students' ability to define words and understand an investigation interview.
新人教版高中英語必修2Unit 5 Music-Reading and Thinking教案一
This section focuses on "learning about experiencing music Online". This virtual choir is a new form of music performance. Members from all over the world don't need to love to come to a place. Instead, they use the new technology to model the various parts and wonderful virtual harmony group of music in the family. Students need to understand the main meaning of each paragraph. Finding topic sentences is an important way to understand the general idea of a paragraph. After the topic sentence, it is usually the detail sentence that supports and explains the topic sentence. Some paragraphs have obvious subject sentences, for example, the first sentence of the second paragraph is the subject sentence of the paragraph, and the following sentenceStudents need to pay attention to the topic sentences and key sentences, and then pay attention to how the sentences after the meaning explain, explain and support the topic sentences or key sentences before.1.Guide students to learn about experiencing music online2.Guide students to scan and circle the information in the text.3.Guide students to find the numbers and dates to fill in the timeline.4.Guide students to learn more about music by completing the sentences with the correct forms of the words and phrases. And then make a mind map about the outline of the passage.1. Guide students to pay attention to reading strategies, such as prediction, self-questioning and scanning.2. Help students sort out the main meaning of each paragraph and understand the narrative characteristics of "timeline” in illustrative style.3. Lead students to understand the changes that have been caused by the Internet.
新人教版高中英語必修2Unit 5 Music-Reading For Writing教案一
(4)Now we have heard a number of outstanding speeches ... 我們已經(jīng)聆聽了許多精彩的發(fā)言……(5)Because we wanted the nations of the world, working together, to deal with ... 因為我們希望全世界各國團結起來去應對……(6)And if we do not act ... 如果我們不采取行動……(7)Now, I share the concerns that have been expressed ... 我也同意對于……表達的擔心(8)Let us show the world that by working together we can ... 讓我們告訴全世界，通過一起努力我們可以……(9)It is now time for us to ... 是時候我們……(10)And I have always wished that ... 我一直希望……(11)Thank you for letting me share this day with me.感謝你們和我共度這一天。實踐演練：假如你是高中生李華，你校將舉辦一次以“音樂”為主題的演講比賽，請你按照主題，寫下你的演講稿。注意：詞數(shù)100左右。First of all, thank you for listening to my speech. My topic is: love music like love yourself.Music is like the air we need to maintain our normal lives around us. You can't imagine how terrible a world without music would be. Movies and TV shows have no music, only dry conversations and scenes; mobile phones only vibrations; streets only noisy crowds; cafes, western restaurants only depressed meals. What a terrible world it is!As a student, I hope we all can enjoy the fun brought by music in our spare time. Instead of just listening to music, we can even make our own music. Let's enjoy the fun of music!Thanks again for your attention!
新人教版高中英語必修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.本節(jié)語法思考：定語從句在復合句中的作用是什么？ 關系詞有哪些？定語從句在復合句中的作用相當于形容詞，它在句中作定語修飾名詞或代詞。他們在先行詞和定語從句之間起到聯(lián)系作用，同時在意義上代表先行詞并在定語從句中擔任一個成分。被定語從句所修飾的詞稱先行詞，定語從句一般放在先行詞的后面。
新人教版高中英語必修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)他已被挑選出來參加運動會。The ink has not been removed from his overcoat．(否定句)墨跡還沒有從他外套上去掉。
