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新人教版高中英語必修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.
新人教版高中英語必修2Unit 3 The Internet-Reading For Writing教案一
⑦identity theft 身份盜竊⑧chat room 聊天室⑨draft your blog post 起草博客帖子⑩post embarrassing photos 張貼尷尬照片 【話題句式】 1. How do you stay safe online and avoid bad experiences on the Internet? 你如何在網(wǎng)上保持安全, 避免在網(wǎng)上的不良經(jīng)歷? 2. I’m not an expert, but many years as a blogger have taught me a thing or two. 我不是專家, 但作為一個博主, 我已經(jīng)學(xué)了好幾年了。 3. If you see or read something that makes you feel uncomfortable, leave the site immediately. 如果你看到或讀到一些讓你覺得不舒服的東西, 立即離開這個網(wǎng)站。4. Don’t give out your address or phone number. 別告訴別人你的地址或電話號碼。 5. Identity theft is a common and serious problem. 身份盜竊是一個常見而嚴(yán)重的問題。6. Being online is no excuse for being rude, and you don’t want to become a target for a troll or cyberbully. 上網(wǎng)并不是無禮的借口, 你也不想成為發(fā)挑釁帖子的人或網(wǎng)絡(luò)惡霸的目標(biāo)。 7. Trolls often use several false names so that they can stay on a site. 發(fā)挑釁帖子的人經(jīng)常使用幾個假名, 這樣他們就可以留在一個網(wǎng)站上。8. However, the more polite you are, the less likely it is you will be attacked. 然而, 你越有禮貌, 你被攻擊的可能性就越小。
新人教版高中英語必修2Unit 4 History and Traditions-Reading and Thinking教案一
Features of languages1．Finally, in the 20th century, the southern part of Ireland broke away from the UK, which resulted in the full name we have today: the United Kingdom of Great Britain and Northern Ireland．該句是一個復(fù)合句。該句主句為：the southern part of Ireland broke away from the UK；which resulted in the full name we have today為which引導(dǎo)的定語從句代指前面整句話的內(nèi)容，we have today為定語從句修飾先行詞name。譯文：最后，在20世紀(jì)，愛爾蘭南部脫離英國，這導(dǎo)致了我們今天有的英國的全名：大不列顛及北愛爾蘭聯(lián)合王國。2．Almost everywhere you go in the UK, you will be surrounded by evidence of four different groups of people who took over at different times throughout history．該句是一個復(fù)合句。該句主句為：you will be surrounded by evidence of four different groups of people；其中Almost everywhere you go in the UK為讓步狀語從句； who took over at different times throughout history為定語從句修飾先行詞people。譯文：幾乎無論你走到英國的任何地方，你都會發(fā)現(xiàn)歷史上有四種不同的人在不同的時期統(tǒng)治過英國。3．The capital city London is a great place to start, as it is an ancient port city that has a history dating all the way back to Roman times．該句是一個復(fù)合句。該句主句為：The capital city London is a great place to start; as it is an ancient port city that has a history dating all the way back to Roman times．為原因狀語從句；dating all the way back to Roman times為現(xiàn)在分詞短語作定語修飾history。
新人教版高中英語必修2Unit 5 Music-Discovering Useful Structures教案一
Step1:自主探究。1．(教材P52)Born(bear) in the USA on 2 January 1970, Whitacre began studying music at the University of Nevada in 1988．2．(教材P52) Moved(move) by this music, he said, “It was like seeing color for the first time．”3．(教材P56)I was very afraid and I felt so alone and discouraged(discourage)．4．(教材P58)Encouraged(encourage) by this first performance and the positive reaction of the audience, I have continued to play the piano and enjoy it more every day．Step2:語法要點精析。用法1：過去分詞作表語1）．過去分詞可放在連系動詞be, get, feel, remain, seem, look, become等之后作表語，表示主語所處的狀態(tài)Tom was astonished to see a snake moving across the floor．湯姆很驚訝地看到一條蛇正爬過地板。Finally the baby felt tired of playing with those toys．終于嬰兒厭倦了玩那些玩具。注意：1）.過去分詞作表語時與被動語態(tài)的區(qū)別過去分詞作表語時，強調(diào)主語所處的狀態(tài)；而動詞的被動語態(tài)表示主語是動作的承受者，強調(diào)動作。The library is now closed．(狀態(tài))圖書館現(xiàn)在關(guān)閉了。The cup was broken by my little sister yesterday．(動作)昨天我妹妹把杯子打碎了。2）感覺類及物動詞的現(xiàn)在分詞與過去分詞作表語的區(qū)別過去分詞作表語多表示人自身的感受或事物自身的狀態(tài)，常譯作“感到……的”；現(xiàn)在分詞多表示事物具有的特性，常譯作“令人……的”。
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3Unit 2 Morals and virtues教學(xué)設(shè)計一
(2) students are divided into groups according to the requirements of activity 3. Each student shares a story of personal experience or hearing-witnessing kindness, and then selects the most touching story in the group and shares it with the whole class. Before the students share the story, the teacher can instruct them to use the words and sentence patterns in the box to express. For example, the words in the box can be classified:Time order: first of all, then, after that, later, finally logical relationship :so, however, although, butTeachers can also appropriately add some transitional language to enrich students' expression:Afterwards, afterwards, at last, in the end, eventuallySpatial order: next to, far from, on the left, in front ofOtherwise, nevertheless, as a result, therefore, furthermore, in addition, as well asSummary: in a word, in short, on the whole, to sum up, in briefStep 8 Homework1. Understand the definition of "moral dilemma" and establish a correct moral view;2. Accumulate vocabulary about attitudes and emotions in listening texts and use them to express your own views;3. Complete relevant exercises in the guide plan.1、通過本節(jié)內(nèi)容學(xué)習(xí)，學(xué)生能否理解理解“道德困境”的定義；2、通過本節(jié)內(nèi)容學(xué)習(xí)，學(xué)生能否通過說話人所表達(dá)的內(nèi)容、說話的語氣、語調(diào)等來判斷其態(tài)度和情緒；3、通過本節(jié)內(nèi)容學(xué)習(xí)，學(xué)生能否針對具體的道德困境發(fā)表自己的看法和見解，能否掌握聽力理訓(xùn)練中的聽力策略。
新人教版高中英語必修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 _______________（把車停下來(park)）in an underground car Park near Trafalgar Square, where we could ______________________(讓我們的車充電（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__________________________（發(fā)現(xiàn)自己對...很驚訝）the large number of visitors and the amount of noise at the entrance of the National Gallery.4. Judy ____________________(眼神專注于） Van Gogh’s Sunflowers. It was hard to approach the painting as there were so many people around.5. She ____________________(把這幅畫的復(fù)制品裝箱（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、用過去分詞對下列句子進(jìn)行改寫。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.
新人教版高中英語必修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(jié)起來去應(yīng)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(dá)的擔(dān)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!
人教版新課標(biāo)高中物理必修2平拋運動教案2篇
（五）平拋運動規(guī)律的應(yīng)用例1：一架老式飛機在高出海面45m的高處，以80m/s的速度水平飛行，為了使飛機上投下的炸彈落在停在海面上的敵船，應(yīng)該在與轟炸目標(biāo)的水平距離為多遠(yuǎn)的地方投彈?不計空氣阻力。分析：對于這道題我們可以從以下幾個方面來考慮：(1)從水平飛行的飛機上投下的炸彈，做什么運動?為什么?(2)炸彈的這種運動可分解為哪兩個什么樣的分運動?3)要想使炸彈投到指定的目標(biāo)處，你認(rèn)為炸彈落地前在水平方向通過的距離與投彈時飛機離目標(biāo)的水平距離之間有什么關(guān)系?拓展：1、式飛機在高出海面45m的高處，以80m/s的速度水平飛行，尾追一艘以15m/s逃逸的敵船，為了使飛機上投下的炸彈正好擊中敵船，應(yīng)該在與轟炸目標(biāo)的水平距離為多遠(yuǎn)的地方投彈?不計空氣阻力。2、在一次摩托車跨越壕溝的表演中，摩托車從壕溝的一側(cè)以速度v＝40m/s沿水平方向向另一側(cè)，壕溝兩側(cè)的高度及寬度如圖所示，摩托車可看做質(zhì)點，不計空氣阻力。（1）判斷摩托車能否跨越壕溝？請計算說明（2）若能跨過，求落地速度？
人教版新課標(biāo)高中物理必修2功率教案2篇
1．用CAI課件模擬汽車的啟動過程。師生共同討論：①如果作用在物體上的力為恒力，且物體以勻速運動，則力對物體做功的功率保持不變。此情況下，任意一段時間內(nèi)的平均功率與任一瞬時的瞬時功率都是相同的。②很多動力機器通常有一個額定功率，且通常使其在額定功率狀態(tài)工作（如汽車），根據(jù)P=FV可知：當(dāng)路面阻力較小時，牽引力也小，速度大，即汽車可以跑得快些；當(dāng)路面阻力較大，或爬坡時，需要比較大的牽引力，速度必須小。這就是爬坡時汽車換低速擋的道理。③如果動力機器在實際功率小于額定功率的條件下工作，例如汽車剛剛起動后的一段時間內(nèi)，速度逐漸增大過程中，牽引力仍可增大，即F和v可以同時增大，但是這一情況應(yīng)以二者乘積等于額定功率為限度，即當(dāng)實際功率大于額定功率以后，這種情況不可能實現(xiàn)。
人教版新課標(biāo)高中物理必修2向心力教案2篇
3．進(jìn)一步體會力是產(chǎn)生加速度的原因，并通過牛頓第二定律來理解勻速圓周運動、變速圓周運動及一般曲線運動的各自特點。（三）、情感、態(tài)度與價值觀1．在實驗中，培養(yǎng)學(xué)生動手、探究的習(xí)慣。2．體會實驗的意義，感受成功的快樂，激發(fā)學(xué)生探究問題的熱情、樂于學(xué)習(xí)的品質(zhì)。教學(xué)重點1．體會牛頓第二定律在向心力上的應(yīng)用。2．明確向心力的意義、作用、公式及其變形，并經(jīng)行計算。教學(xué)難點1．對向心力的理解及來源的尋找。2．運用向心力、向心加速度的知識解決圓周運動問題。教學(xué)過程（一）、 引入新課：復(fù)習(xí)提問：勻速圓周運動的物體的加速度——向心加速度，它的方向和大小有何特點呢？學(xué)生回答后進(jìn)一步引導(dǎo)：那做勻速圓周運動物體的受力有什么特點呢？是什么力使物體做圓周運動而不沿直線飛出？請同學(xué)們先閱讀教材
人教版新課標(biāo)高中物理必修1摩擦力教案2篇
l．知識與技能：（1）知道摩擦力產(chǎn)生的條件。（2）能在簡單問題中，根據(jù)物體的運動狀態(tài)，判斷靜摩擦力的有無、大小和方向；知道存在著最大靜摩擦力。（3）掌握動磨擦因數(shù)，會在具體問題中計算滑動磨擦力，掌握判定摩擦力方向的方法。（4）知道影響到摩擦因數(shù)的因素。2．過程與方法：通過觀察演示實驗，概括出摩擦力產(chǎn)生的條件及摩擦力的特點，培養(yǎng)學(xué)生的觀察、概括能力。通過靜摩擦力與滑動摩擦力的區(qū)別對比，培養(yǎng)學(xué)生分析綜合能力。3．情感態(tài)度價值觀：在分析物體所受摩擦力時，突出主要矛盾，忽略次要因素及無關(guān)因素，總結(jié)出摩擦力產(chǎn)生的條件和規(guī)律。二、重點、難點分析1．本節(jié)課的內(nèi)容分滑動摩擦力和靜摩擦力兩部分。重點是摩擦力產(chǎn)生的條件、特性和規(guī)律，通過演示實驗得出關(guān)系f=μN。2．難點是學(xué)生有初中的知識，往往誤認(rèn)為壓力N的大小總是跟滑動物體所受的重力相等，因此必須指出只有當(dāng)兩物體的接觸面垂直，物體在水平拉力作用下，沿水平面滑動時，壓力N的大小才跟物體所受的重力相等。
人教版新課標(biāo)高中物理必修1彈力教案2篇
一般情況下，凡是支持物對物體的支持力，都是支持物因發(fā)生形變而對物體產(chǎn)生彈力。所以支持力的方向總是垂直于支持面而指向被支持的物體。例1：放在水平桌面上的書書由于重力的作用而壓迫桌面，使書和桌面同時發(fā)生微小形變，要恢復(fù)原狀，對桌面產(chǎn)生垂直于桌面向下的彈力f1，這就是書對桌面的壓力；桌面由于發(fā)生微小的形變，對書產(chǎn)生垂直于書面向上的彈力f2，這就是桌面對書的支持力。學(xué)生分析：靜止地放在傾斜木板上的書，書對木板的壓力和木板對書的支持力。并畫出力的示意圖。結(jié)論：壓力、支持力都是彈力。壓力的方向總是垂直于支持面而指向被壓的物體，支持力的方向總是垂直于支持面而指向被支持的物體。引導(dǎo)學(xué)生分析靜止時，懸繩對重物的拉力及方向。引導(dǎo)得出：懸掛物由于重力的作用而拉緊懸繩，使重物、懸繩同時發(fā)生微小的形變。重物由于發(fā)生微小的形變，對懸繩產(chǎn)生豎直向下的彈力f1，這是物對繩的拉力；懸繩由于發(fā)生微小形變，對物產(chǎn)生豎直向上的彈力f2，這就是繩對物體的拉力。
人教版新課標(biāo)高中物理必修1力的分解教案2篇
一、教材內(nèi)容經(jīng)全國中小學(xué)教材審定委員會2004年初審查通過，人教育出版社出版的普通高中課程標(biāo)準(zhǔn)實驗教科書《物理必修①》，第三章第5節(jié)內(nèi)容“力的分解”。二、教學(xué)目標(biāo)1．知識與技能（1）理解分力的概念，理解力的分解是力的合成的逆運算，遵循平行四邊形定則。（2）初步掌握一般情況下力的分解要根據(jù)實際需要來確定分力的方向。（3）會用作圖法和直角三角形的知識求分力。（4）能區(qū)別矢量和標(biāo)量，知道三角形定則，了解三角形定則與平行四邊形定則的實質(zhì)是一樣的。2．過程與方法（1）進(jìn)一步領(lǐng)會“等效替代”的思想方法。（2）通過探究嘗試發(fā)現(xiàn)問題、探索問題、解決問題能力。（3）掌握應(yīng)用數(shù)學(xué)知識解決物理問題的能力。3．情感態(tài)度與價值觀（1）通過猜測與探究享受成功的快樂。（2）感受物理就在身邊，有將物理知識應(yīng)用于生活和生產(chǎn)實驗的意識。三、教學(xué)重點、難點在具體問題中如何根據(jù)力的實際作用效果和平行四邊形定則進(jìn)行力的分解。
高中歷史人教版必修一《第22課祖國統(tǒng)一大業(yè)（簡案）》說課稿
情景導(dǎo)入：．．．．．．運用情景營造氣氛，激發(fā)學(xué)生的求知欲望，幫助學(xué)生聯(lián)系現(xiàn)實問題，學(xué)習(xí)歷史，拉近歷史與現(xiàn)實的距離，引導(dǎo)學(xué)生關(guān)注時政熱點，關(guān)心國家大事。自主學(xué)習(xí)：組織學(xué)生閱讀課文，老師參與學(xué)生閱讀活動并板書知識結(jié)構(gòu)。通過學(xué)生自主學(xué)習(xí)，培養(yǎng)學(xué)生自學(xué)能力，為進(jìn)一步好好學(xué)習(xí)打下基礎(chǔ)。交流學(xué)習(xí)：學(xué)生自學(xué)以后，老師引導(dǎo)學(xué)生相互交流自學(xué)成果，學(xué)生自主提出問題，相互解答，從而達(dá)到生生互動、師生互動，在互動中學(xué)習(xí)，共同提高
高中歷史人教版必修一《第22課祖國統(tǒng)一大業(yè)》說課稿
1、教材分析 本課選自普通高中課程標(biāo)準(zhǔn)實驗教材，人民教育出版社歷史必修（1），第六單元：現(xiàn)代中國的政治建設(shè)與祖國統(tǒng)一，第22課——祖國統(tǒng)一大業(yè)。祖國統(tǒng)一始終是中國人民的共同夙愿。本課內(nèi)容主要敘述了“一國兩制”的偉大構(gòu)想，為完成祖國統(tǒng)一大業(yè)提出了一個創(chuàng)造性的指導(dǎo)方針。香港、澳門的回歸，是“一國兩制” 偉大構(gòu)想的成功實踐。在“一國兩制”方針指導(dǎo)下，海峽兩岸實現(xiàn)了一次歷史性的突破。揭示了“一國兩制” 的構(gòu)想，對推動完成祖國完全統(tǒng)一大業(yè)，實現(xiàn)中華民族偉大復(fù)興具有現(xiàn)實指導(dǎo)意義。 2、學(xué)情分析通過調(diào)查知道，學(xué)生對本節(jié)的基本史實有一定了解。但是，高一新生習(xí)慣于知識的記憶和教師的講解，不能深入分析歷史現(xiàn)象的內(nèi)涵和外延；不能進(jìn)一步探究事物的因果關(guān)系和理解事物的本質(zhì)；并且需要進(jìn)一步拓展思維的廣度和深度，實現(xiàn)從一維目標(biāo)到三維目標(biāo)的飛躍。
人教版新課標(biāo)高中地理必修2第一章第三節(jié)人口合理容量教案
生：環(huán)境承載力是指環(huán)境能持續(xù)供養(yǎng)的人口數(shù)量。師：對了。但是有同學(xué)仍然會感到這是一個很抽象的概念。下面我們具體來了解什么是環(huán)境承載力。我們可以從兩個部分去理解：一、環(huán)境，它主要是指環(huán)境的單個要素（如：土地、水、氣候、植被等。）及其組合方式。二、是承載力，它指在特定的條件下，具體某事物能承受的某種活動的最大值。那環(huán)境承載力的科學(xué)定義是怎樣表達(dá)的呢？生：環(huán)境承載力是指某一時期，某種狀態(tài)條件下，某地區(qū)環(huán)境所能承受的人類活動作用的閾值。師：很對。 我們可以用一個生動的例子來說明。一只木桶里面的水的多少在底面積固定不變的情況下是由哪塊木板來決定？生：最短的那塊。師：確實如此。這就是我們平常所講的 “木桶效應(yīng)”。那影響環(huán)境承載力的大小也是由環(huán)境個要素里面最緊缺的那個要素來決定的。下面我們用一個例子來印證一下。
人教版新課標(biāo)高中地理必修2第一章第二節(jié)人口的空間變化教案
1．促使美國成為一個移民國家的因素是：①美洲屬于未開發(fā)的新大陸，需要大量的勞動力；②歐洲失業(yè)工人和破產(chǎn)農(nóng)民增加，人們?yōu)榱俗非蟾玫慕?jīng)濟待遇遷往美洲；③新航線的開辟為人們順利遷移掃除了障礙；④殖民擴張是人口遷移的促進(jìn)因素，加快了人口遷移的過程。導(dǎo)致美國人口在本土范圍內(nèi)頻繁遷移的原因，歸納起來有：第一次人口遷移是戰(zhàn)爭因素，第二次是城市化；第三次是自然環(huán)境、經(jīng)濟環(huán)境的變化；第四次是經(jīng)濟格局的變化，即西部和南部新資源的發(fā)現(xiàn)和新興工業(yè)的發(fā)展。2．我國古代的人口遷移，深受統(tǒng)治者及其行政力量的束縛。封建帝王為了加強本國的經(jīng)濟和軍事實力，對人口遷移嚴(yán)加控制。只有當(dāng)戰(zhàn)亂發(fā)生的時候，這種控制才得到削弱，人們?yōu)榱硕惚軕?zhàn)亂，尋找安定的生活環(huán)境，不得不進(jìn)行大規(guī)模的遷移。我國近幾十年的人口遷移主要是由生產(chǎn)資料和勞動力數(shù)量上的地區(qū)分布不平衡造成的，是經(jīng)濟因素在起主導(dǎo)作用，與古代的人口遷移截然不同。
人教版新課標(biāo)高中地理必修2第三章第一節(jié)農(nóng)業(yè)區(qū)位的選擇教案
1.澳大利亞混合農(nóng)業(yè)地域在生產(chǎn)結(jié)構(gòu)、經(jīng)營方式、科技應(yīng)用、農(nóng)業(yè)專業(yè)化和地域化等方面有哪些特點？2.在澳大利亞混合農(nóng)業(yè)地 域形成的過程中，有哪些區(qū)位因素在起作用？學(xué)生發(fā)言，教師適當(dāng)引導(dǎo)、評點并作講解。[教師提問]：那么，澳大利亞的墨累—達(dá)令盆地的區(qū)位因素有什么不足之處？知識拓展：課件展示澳大利亞大分水嶺的雨影效應(yīng)的形成原理及東水西調(diào)示意圖。[教師講解]：澳大利亞東南部受大分水嶺的影響，降水集中于大分水嶺的東側(cè)，在其西側(cè)形成山地的雨影效應(yīng)，降水豐富地區(qū)與農(nóng)業(yè)生產(chǎn)地區(qū)分布不一致，灌溉成為澳大利亞農(nóng)牧業(yè)發(fā)展的限制性條件。因此，澳大利亞對水利工程建設(shè)很 重視，東水西調(diào)促進(jìn)了墨累—達(dá)令盆地農(nóng)牧業(yè)的發(fā)展。[課堂小結(jié)]：這節(jié)課我們學(xué)習(xí)了農(nóng)業(yè)區(qū)位選擇的基本原理。 通過學(xué)習(xí)我們了解到，農(nóng)業(yè)的區(qū)位選擇實質(zhì)上就是對農(nóng)業(yè)土地的合理利用。