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人教版高中地理選修2荒漠化的成因與防治教案

  • 人教版新目標初中英語八年級下冊What were you doing when the UFO arrived教案2篇

    人教版新目標初中英語八年級下冊What were you doing when the UFO arrived教案2篇

    (一).知識方面: 1.培養(yǎng)學(xué)生能運用過去進行時來描述、談?wù)撨^去某個時間正在發(fā)生的事情或動作的意識和能力,能就過去某個時間正在發(fā)生的動作做出正確的描述。 2.培養(yǎng)學(xué)生的想象力和角色扮演的合作能力。 3.培養(yǎng)學(xué)生講述過去發(fā)生的事情經(jīng)過的能力。能正確運用一般過去時來講述故事。 (二).技能方面: 1.本單元的語言目標是Talk about past events and tell a story(談?wù)撨^去的時間和講述一個故事),圍繞這一目標,要涉及句型: What were you doing when the UFO arrived? ----I was sitting in the barber’s chair. The barber was cutting my hair. 因此必須學(xué)習(xí)standing、studying、cleaning、sleeping、cooking、making、eating、cutting、等表示地點的詞,以便為上述句型提供語言材料。2.學(xué)習(xí)過去進行時的有關(guān)知識。Was/were+現(xiàn)在分詞,是該時態(tài)的表達式。 3.在學(xué)習(xí)過程中,要區(qū)分The boy was walking down the street when the UFO landed.和While the boy was walking down the street, the UFO landed.這兩種由when和while引導(dǎo)的狀語從句的句型結(jié)構(gòu)。注意它們的不同。

  • 人教版新目標初中英語九年級上冊How do you study for a test教案2篇

    人教版新目標初中英語九年級上冊How do you study for a test教案2篇

    內(nèi)容提示本單元主要內(nèi)容是學(xué)會利用verb十by/with gerund表示方式方法來討論學(xué)習(xí)英語的策略,認識自己在學(xué)習(xí)方面的長處和不足。初步了解現(xiàn)在完成時的結(jié)構(gòu)和用法?,F(xiàn)在完成時由助動詞have/has+動詞的過去分詞構(gòu)成,主要表示過去發(fā)生的某一動作對現(xiàn)在仍有影響或造成的后果,常與already,yet,just,ever,never等副詞連用。教學(xué)目標一、學(xué)習(xí)目標(Language Goal) 1. Talk about how to study . 學(xué)會討論各種學(xué)習(xí)方法和策略。2. Find out your suitable learning methods. 找出適合自己的學(xué)習(xí)方法。 二、語言結(jié)構(gòu)(Language Structures) 1. Verb + by with gerund by+動名詞短語 表示“通過…途徑,方法” 2. How questions have引導(dǎo)的特殊疑問句 三、目標語言(Target Language) 1. How do you study for tests ? 你是怎樣準備考試的?Well , I study by working with my classmates. 哦,我和同學(xué)們一起學(xué)習(xí)。2. Have you ever studied with a group ? 你曾經(jīng)參加過學(xué)習(xí)小組嗎?Yes , I have . I’ve learned a lot that way . 是的,參加過。通過這種方式我學(xué)了許多。

  • 人教版新目標初中英語九年級上冊Where would you like to visit教案2篇

    人教版新目標初中英語九年級上冊Where would you like to visit教案2篇

    The First PeriodⅠ.Teaching Aims and DemandsKnowledge Objects(1) Key Vocabularytiring, educational, fascinating, thrilling, peaceful, exotic, trek, jungle, take it easy, explore, historic, site(2) Target LanguageWhere would you like to go on vacation?I’d like to trek through the jungle, because I like exciting vacations.2. Ability Objects(1)Train students to talk about places they would like to visit with the target language.(2)Train students to describe vacations with different adjectives.(3)Train students' listening skill.3. Moral Object,It′s more interesting to go on vacating somewhere instead of staying at home.Ⅱ. Teaching Key Points1. Key Vocabularytiring, educational, fascinating, thrilling, peaceful, exotic, trek, jungle, take it easy, explore, historic, site2. Target LanguageTalk about different places with the target language.Ⅲ. Teaching Difficult Points1. Describe vacations with different adjectives.2. Talk about different places with the target language.Ⅳ. Teaching Methods1. Teaching by illumination2. Teaching by doing chain drills3. Teaching by pairworkⅤ. Teaching Aids1. A tape recorder2. Some pictures of different places with famous views

  • 人教版新目標初中英語九年級下冊We’re trying to save the manatees教案2篇

    人教版新目標初中英語九年級下冊We’re trying to save the manatees教案2篇

    本單元主要圍繞著有關(guān)瀕臨滅絕的動物這一話題,學(xué)習(xí)了應(yīng)該怎樣保護我們的環(huán)境,以及就某一問題展開辯論。目標提示語言目標能夠運用所學(xué)知識,就某一問題展開辯論。認知目標1、復(fù)習(xí)一些語法:現(xiàn)在進行時、一般現(xiàn)在時、用used to 表示一般過去時、現(xiàn)在完成時、一般過去時的被動語態(tài)。2、學(xué)會表達同意和不同意。3、學(xué)會以下基本句型:We’re trying to save the manatees.Manatees eat about 100 pounds of food a day.There used to be a lot of manatees.In 1972,it was discovered that they were endangered.Some of the swamps have become polluted.情感目標了解一些瀕臨滅絕的動物的生活習(xí)性和瀕臨滅絕的原因,教育學(xué)生應(yīng)該如何保護環(huán)境。教學(xué)提示充分利用多媒體等教學(xué)設(shè)備,創(chuàng)設(shè)與本課話題相關(guān)的情境,如各種不同種類的動物、動物園以及有關(guān)環(huán)境的畫畫等等。圍繞著本單元的教學(xué)目標,設(shè)計一些貼近學(xué)生實際的教學(xué)任務(wù),如讓學(xué)生談?wù)撟约鹤钕矚g的動物,如何拯救瀕危動物,如何保護環(huán)境等等。讓學(xué)生根據(jù)所學(xué)知識,就動物園是否對動物有利以及其他的話題進行辯論。

  • 人教版新目標初中英語七年級下冊How was your weekend教案2篇

    人教版新目標初中英語七年級下冊How was your weekend教案2篇

    Teaching Goal:1. General aims:Talk about recent past events2. Particular aims:A. Language Focus.Talk about recent past events and think of the past events.B. Language goalsHow was….?It was …What did …do over the weekend?C. Language structures:(1). How was your weekend? I was great. Pay attention to no form.(2). What did you do over the weekend? I played soccer. We went to the beach.D. Useful words and phrases:Words: was, did, went, beach, over, project, test, wasn’t, false, number, geography, spend, week, most, mixture, their, had, little, cook, read, saw, change, everyone, sit, sat, no, anythingPhrases: did one’s homework, played soccer, cleaned my room, went to the beach, played tennis, went to the movies, on Saturday morning, over the weekend, cook … for, what about, do some reading, have a party, talk show, go shoppingE. Grammar language:Present simple past tenseRegular and irregular verbsF. Learning strategies:Tour and holidaysG. Interdiscipinary:H. Emotion and manner:Teaching time: 5 periodsTeaching procedures:Period One教學(xué)步驟、時間 教師活動 學(xué)生活動 媒體應(yīng)用Step 1Free talk 3’ Ask some questions like:Who’s on duty today?What’s the weather like? Answer and talk about something.讓同學(xué)們回答下列問題1. Do you like weekend? (Let some students answer)It takes them three minutes to talk about the question.2. Why do you like weekend? (let the students answer) Most of the students like the weekend此時教師用漢語問:“在周末期間問你干了什么?這句話用英語這么回答?Let the students guess.At last the teacher give them right answer3. What did you do over the weekend?(板書、學(xué)習(xí))

  • 人教版新目標初中英語七年級下冊Where is the post office教案2篇

    人教版新目標初中英語七年級下冊Where is the post office教案2篇

    Period 2 (3a----Section B 2c)Preview(Pre-task): Key points: What laAdd another information about their pen pals----their language on the cardnguage does she/he speak?She/He speaks....Does she/he have any brothers and sisters? Does she/he speak English?Preview(Pre-task): Add another information about their pen pals----their language on the cardKey points: What language does she/he speak?She/He speaks....Does she/he have any brothers and sisters? Does she/he speak English?Step 1 Revision1.Revisionand dictation of the new words 2.Revise the drills they learned yesterday.(by pairwork and grammar exercise)Step 2 Leading-inT has a conversation with one student. The conversation is following:---Do you have a pen pal?---Yes, I do.---What's your pen pal's name? ---His/Her name is....---Where is your pen pal from? ---He/She is from...---Where does he/she live? ---He/She lives in....---What language does he/she speak?He/She speaks...Write the new words on the Bb. They are following: EnglishChineseJapaneseFrenchStep 3 LearnLearn the new words with the whole class.Finish 3a with the students3b Pairwork T still does an example with one student Then the Ss practise in pairs. The example is following:--Curry Muray is my pen pal. He is from the United States.---What language does he speak?

  • 人教版新目標初中英語七年級下冊Why do you like koalas教案2篇

    人教版新目標初中英語七年級下冊Why do you like koalas教案2篇

    單元整體說明(一)單元教材分析本單元的核心話題是描述動物和表達個人喜好,以及句式why do you like…? Because…。這也是本單元的教學(xué)重點。通過本單元的學(xué)習(xí),學(xué)生應(yīng)能較流利地運用所學(xué)詞匯和句型描述動物,表達個人喜好。(二)單元知識結(jié)構(gòu)1.詞匯動物名稱 tiger, elephant, koala, dolphin, etc.詞匯描述性形容詞: smart, cute, ugly, clever, shy, etc.國家名: Australia, South Africa2.句型Why do you like koala hears? Because they are cute.Where are pandas from? They're from China.What animals do you like? I like dolphins.(三)單元整體目標1.Master the vocabulary2.Master and use: Why do you like koalas? Because they am cute.Where are pandas from? They're from China.What animals do you like? I like dolphins.(四)單元教學(xué)重難點一覽(五)單元學(xué)情分析學(xué)生此前已經(jīng)學(xué)過由why, where, what 引導(dǎo)的特殊疑問句句型,具有了學(xué)習(xí)本單元知識的認知前提。形形色色的動物能激發(fā)學(xué)生的好奇心,產(chǎn)生了解它們的欲望,這有利于本單元知識的教學(xué)和學(xué)生學(xué)習(xí)興趣的培養(yǎng)。

  • 人教版新目標初中英語八年級上冊How do you get to school教案2篇

    人教版新目標初中英語八年級上冊How do you get to school教案2篇

    Step Ⅶ Role play ( Work on 1b)1. First ask two students to read the dialogue to the class.Sa: How do you get to school?Sb: Well, I ride my bike to the subway station. Then I take the subway.2. Now work with a partner.Suppose you use two kinds of transportation to get to school \Hangzhou\Beijing... (bus, train, subway, walking, bike, etc.) Tell how you get there. You may use the phrases in 1a.3. Then ask different pairs of students to present their conversations to the class.Step ⅧListening1. Work on 2a(1) First ask students to read the list of information that Thomas wants to know.…where Nina lives.…h(huán)ow far from school she lives.…h(huán)ow long it takes to get to school.…h(huán)ow she gets to school.…what she thinks of the transportation.(2) Tell students what transportation and bus stop mean.bus stop 汽車站 transportation n. 運送;運輸Then tell students we'll hear a recording. Please put a checkmark in front of each thing that Thomas wants to know.(3) Now play the recording for students.( Have students pay attention to the sample answer.) (4) Then correct the answers.

  • 人教版新目標初中英語八年級上冊What are you doing for vacation教案2篇

    人教版新目標初中英語八年級上冊What are you doing for vacation教案2篇

    Teaching goals : 1. Words & phrases: babysit ,get back , fishing , rent , think about , decide(on) , tourist etc. 2. How to talk about future plans . 3. 現(xiàn)在進行時表示將來計劃或行動. 4. 特殊疑問句(where , when , how long引導(dǎo)) Important and difficult points : Drills :What are you doing for vacation ? I’m watching TV . When are you going ? I’m going … . How long are you staying ? We’re staying for five days . Teaching aids : cards and a tape ,a large wall calendar . Period 1 Teaching procedures : Step 1Leading in1. Free talk . 2. Put up the wall calendar . T: I’m staying home on Saturday (pointing to next Saturday ).Ss repeat . Ss: I’m staying home on Saturday . T: OK. Today we’ll learn how to talk about future plans. Step 2Pre-task SB Page 13 , 1a . 1. Look at the picture carefully and tell what you see in the picture . 2. Write the activities from the pictures in the box and add some more . 3. Practice reading . Step 3While-task1. Using the activities we write in 1a to make conversations .For example :What are you doing for vacation ? I’m visiting my uncle . 2. Pairwork .Practice in pairs . 3. 用第三人稱練習(xí)對話.

  • 人教版新目標初中英語八年級下冊What should I do教案2篇

    人教版新目標初中英語八年級下冊What should I do教案2篇

    說明:在幫Li Lei提建議的同時,教育學(xué)生如何學(xué)好英語。第三課時教學(xué)目標1. 語言目標:a) 詞匯: Original, in style, haircut, the same as.b) 語言結(jié)構(gòu):My friend wears the same clothes and has the same haircut as I do.2. 能力目標:大多數(shù)學(xué)生能夠談?wù)撟约合矚g哪種服裝,提高查找信息的能力。3. 情感目標:學(xué)會如何與朋友相處,要有自己對時尚的看法。教學(xué)重點掌握一些重要詞匯。教學(xué)難點學(xué)會談?wù)搯栴},并能提出書面建議?!艚虒W(xué)突破首先針對Erin的問題,提出個人的建議,模仿2c部分的對話展開雙人交際Pair-work;聽老師誦讀3a部分的信件,并找出LEFT OUT的問題所在;學(xué)生完成3b部分的內(nèi)容,給Left Out提出書面的建議;學(xué)以口頭形式提出自己目前存在的某個問題,講給大家聽,讓同學(xué)們給自己提出一個建議,并作筆錄;學(xué)生兩、三個人分成一組,隨意性地進行口語交際,談?wù)揚14的第4部分的某個問題,相互交換意見。

  • 人教版新目標初中英語八年級上冊I’m more outgoing than my sister教案2篇

    人教版新目標初中英語八年級上冊I’m more outgoing than my sister教案2篇

    1 交通工具的比較此活動為小組活動。學(xué)生通過討論找出到達某一城市可乘坐的各種交通工具,并選擇最佳出行方式。Teacher:We’re going to Shanghai. How many ways can we use to get there? Yes, there are four ways: by bus, by plane, by train, by ship. Please discuss how you are going to get there.操作建議:(1)學(xué)生以小組為單位展開活動,談?wù)摫窘M所選擇的交通工具。(2)各組選代表向全班匯報,闡述本組所選擇的交通工具的利和弊。完成任務(wù)所需要的語言結(jié)構(gòu):We can go there by ship. It’s more comfortable and cheaper than any other transportation.We can go there by bus. It’s cheaper but it takes longer time.2 哪個城市更合適?此活動具有挑戰(zhàn)性。假設(shè)中國要舉行2014年世界杯足球賽,分別從歷史,人文,天氣等方面對各城市(北京,大連,上海,昆明)進行比較,選擇最佳舉辦城市。T: Imagine China is holding the 2014 FIFA World Cup. Which city do you think is the best for the World Cup, Beijing, Dalian, Shanghai or Kunming? Let’s work in groups. If you choose Beijing, please join the Team Red. If you chose Dalian, please join the Team White. If you choose Shanghai, please join the Team Blue. If you choose Kunming, please join the Team Green. Please show us its advantages. Then let’s see which team will win.

  • 人教版新目標初中英語八年級上冊What’s the best radio station教案2篇

    人教版新目標初中英語八年級上冊What’s the best radio station教案2篇

    教學(xué)重點和難點:運用所掌握的語言描述,比較不同地點的特點。在練習(xí)中學(xué)習(xí)掌握英語比較級和最高級的用法。課前準備分配小組,每組五至六人。通過上網(wǎng)或翻閱報刊雜志等方法,確定旅游線路,做出基本的旅游計劃。教學(xué)設(shè)計:本節(jié)課流程圖 學(xué)法指導(dǎo):1.由于這是一堂新課,在教學(xué)中應(yīng)注意面向全體,發(fā)揮學(xué)生的主體性,引導(dǎo)學(xué)生積極參與,激發(fā)學(xué)生的求知欲和學(xué)習(xí)積極性,指導(dǎo)學(xué)生積極思維,主動獲取知識,養(yǎng)成良好的學(xué)習(xí)方法。逐步學(xué)會獨立解決問題??傊M可能調(diào)動學(xué)生的非智力因素促進智力因素的發(fā)展。教法選擇:1.電化教學(xué)法2.課堂討論法3.任務(wù)型教學(xué)法采用這些方法的目的是為了充分調(diào)動學(xué)生的學(xué)習(xí)積極性,使學(xué)生變被動學(xué)習(xí)為主動學(xué)習(xí)。通過電腦形象的演示,加強印象,提高興趣,突破難點,提高教學(xué)效率,進而增大教學(xué)的容量和信息量。充分體現(xiàn)教師為主導(dǎo),學(xué)生為主體的教學(xué)原則。

  • 人教版新目標初中英語八年級下冊He said I was hard-working教案2篇

    人教版新目標初中英語八年級下冊He said I was hard-working教案2篇

    This activity introduces some new vocabulary and provide oral practice using the target language.Task 1 . Ask four students to stand in front of the class, and the teacher asks them the following questions as a reporter.1.What are you going to do when you grow up?2.What are you going to do next week?3.What are going to do after school?The students will give different answers, then ask a good student to report what they said.I am going to e a doctor.What did she say?----------She said she was going to be a doctor.I am going to have a party on Friday night.What did he say?-------He said he was going to have a party on Friday night.I am going to do my homework.What did she say ?------ She said she was going to do her homework.I am going home after school.What did she say?-----She said she was going home after school.Say In this unit we are going to learn to use words like to report what someone said.Task 2. Read the instructions. Then ask a student to read the four questions. And write the words on the Bb. Explain what soap opera is.Task 3. Ask the students to Look at the pictures, point out the TV screens in the picture. Ask one girl to read what Marcia said.What did Marcia say? She said She said she was having a surprise party for Lana on Friday night. Repeat the other pictures in the same way.Activity3. Listen and number the pictures in activity 1a.

  • 人教版新目標初中英語九年級上冊Teenagers should be allowed to choose their own clothes教案2篇

    人教版新目標初中英語九年級上冊Teenagers should be allowed to choose their own clothes教案2篇

    Step 1 Greeting Greet the class and check the homeworkStep 2 A duty report The S on duty gives a report on the rules in his home and lead in 3a “Sun Fei’s and Wu Yu’s rules” Step 3 ReadingSs read the conversation and write the two girls’ rules in the chart. Check the answers.Get Ss to read after the tape and then read aloud by themselves. Then, T explains the language points.Step 4 Pairwork 3bRole play. Use the information in chart to practice with the conversation in 3a covered. They can look at the sample conversation in the right box.Step 5 Task 2 “Who’s the best reporter?”Make a survey by asking any 5 students the questions in the chart in activity 4. Then give out a report about it. See who is the best reporter? And the best reporter will get a nice ball-pen.Step 6 Summary and homework:Write out the report in your exercise-books.Period ThreeStep 1 Greeting and a duty reportThe S gives a duty report talking about his experience of being late for school. Lead in the question “Do you ever get to school late? How often do you get to school late? Always, usually, sometimes, or never?Step 2 1a Get Ss to finish writing.Step 3 Pairwork 1b Get Ss to talk about their answers with their partners using the sample conversation in the box on the right.Step 4 Listening practice2a Lead-in: What will happen if you get to school late? What about Peter? Let’s listen to a conversation between Peter and his father. Get Ss to finish 2a (As usual, for the first time, Ss only listen.) Check the answers.

  • 人教版高中語文《就任北京大學(xué)校長之演說》教案

    人教版高中語文《就任北京大學(xué)校長之演說》教案

    蔡元培的道德風(fēng)范和人格力量,具有震撼人心的作用,深為世人所欽仰。“人世楷?!薄吧屏嫉纳鐣颓f嚴的人生的模范”(國立音樂??茖W(xué)校師生1936年1月《祝蔡孑民先生千秋詩》)的贊譽,對他來說絕非溢美之詞。任鴻雋稱他具有“處處為人無我的真精神”;“對人接物,似乎有兩個原則,一個是尊重他人的人格,決不愿意以自己的語言和行動使人感到一點不快或不便,一個是承認他人的理性,以為天下事無不可以和平自由的方法互相了解或處理?!薄暗诠x一方面,蔡先生卻是特立不屈、勇往直前、絲毫不退、毫不假借的斗士?!保ㄖ貞c《中央日報》1940年3月24日)他的學(xué)生馮友蘭也回憶說,在蔡先生身邊,感同光風(fēng)霽月,他的人格能造成一種氣象。沐浴在這種氣象之中,就不能不為他的人格所感化。蔡元培身居高位,一生廉潔,自奉儉樸,直至晚年仍是全家租賃房屋居住,他酷愛的書籍也分散在北平、上海、南京、杭州等地,沒有一個歸攏庋藏的地方。蔡元培這種真誠待人、無私奉獻、光明磊落的精神,源于他對國家、對民族、對事業(yè)、對學(xué)生深深的眷戀和崇高的責任感。他的這種浩然正氣和高尚道德情操,至今仍是公務(wù)人員的楷模。

  • 《小步舞曲教案》教案

    《小步舞曲教案》教案

    教學(xué)過程:一、邊欣賞音樂邊介紹巴赫及其求學(xué)之路。通過背景音樂和文字說明,使同學(xué)們掌握一些有關(guān)西方音樂的文化。二、初步了解小步舞曲。通過文字敘述,簡單了解小步舞曲。三、講述《小步舞曲》曲的音樂內(nèi)容。對節(jié)奏、速度、力度、節(jié)拍以及體裁進行了解。四、結(jié)合譜例分段學(xué)習(xí)《小步舞曲》。1、學(xué)習(xí)樂曲A’段。說明:依據(jù)樂曲創(chuàng)作背景,合理創(chuàng)設(shè)“舞會”情景,從而有效激發(fā)學(xué)生學(xué)習(xí)興趣,用舞蹈表現(xiàn)手段演繹此樂段,發(fā)展了學(xué)生的舞蹈表演能力,享受到美的愉悅。2、學(xué)習(xí)樂曲B段。說明:利用形象、直觀的圖式輔助以及一系列貼近學(xué)生思維邏輯的問答討論,激發(fā)學(xué)生的思考,幫助學(xué)生準確把握樂段情緒,并能用指揮、伴奏等方式表現(xiàn)該樂段。3、完整欣賞《小步舞曲》。說明:學(xué)生在完整欣賞樂曲時能夠鞏固樂曲主題的記憶,并且聽辨、感受樂曲兩個不同主題情緒,培養(yǎng)學(xué)生獨立的音樂感受和見解。五、視頻欣賞。說明:通過視屏欣賞,使同學(xué)們以一個更直觀的郊區(qū)去理解和學(xué)習(xí)作品,并使同學(xué)對作品有更深刻的記憶。引起學(xué)生共鳴,領(lǐng)悟音樂的美感,愉悅身心,獲取樂趣,從而激起學(xué)習(xí)的情趣。

  • 人教版高中政治必修4綜合探究:堅持唯物辯證法,反對形而上學(xué)教案

    人教版高中政治必修4綜合探究:堅持唯物辯證法,反對形而上學(xué)教案

    5.循環(huán)經(jīng)濟當前,發(fā)展循環(huán)經(jīng)濟和知識經(jīng)濟已成為國際社會的兩大趨勢,有的發(fā)達國家甚至以立法的方式加以推進。循環(huán)經(jīng)濟本質(zhì)上是一種生態(tài)經(jīng)濟,它要求運用生態(tài)學(xué)規(guī)律而不是機械的規(guī)律來指導(dǎo)人類社會的經(jīng)濟活動,減量化、再利用和資源化是其三大原則。傳統(tǒng)經(jīng)濟是一種“資源——產(chǎn)品——污染排放”單向流動的線性經(jīng)濟,特征是高開采、低利用、高排放;與之不同,循環(huán)經(jīng)濟倡導(dǎo)的是一種與環(huán)境和諧的經(jīng)濟發(fā)展模式,它要求把經(jīng)濟活動組織成一個“資源——產(chǎn)品——再生資源”的反饋式流程,特征是低開采、高利用、低排放。目前,我國已經(jīng)把發(fā)展循環(huán)經(jīng)濟作為編制“十一五”規(guī)劃的重要指導(dǎo)原則。6.當心被優(yōu)勢“絆倒”有三個旅行者同時住進一家旅店,早上同時出門旅游。晚上歸來時,拿傘的人淋得渾身是水,拿拐杖的人跌得滿身是傷,而什么也沒有帶的人卻安然無恙。

  • 北師大初中八年級數(shù)學(xué)下冊一元一次不等式與一次函數(shù)的關(guān)系教案

    北師大初中八年級數(shù)學(xué)下冊一元一次不等式與一次函數(shù)的關(guān)系教案

    解析:先利用正比例函數(shù)解析式確定A點坐標,然后觀察函數(shù)圖象得到,當1<x<2時,直線y=2x都在直線y=kx+b的上方,于是可得到不等式0<kx+b<2x的解集.把A(x,2)代入y=2x得2x=2,解得x=1,則A點坐標為(1,2),∴當x>1時,2x>kx+b.∵函數(shù)y=kx+b(k≠0)的圖象經(jīng)過點B(2,0),即不等式0<kx+b<2x的解集為1<x<2.故選C.方法總結(jié):本題考查了一次函數(shù)與一元一次不等式的關(guān)系:從函數(shù)的角度看,就是尋求使一次函數(shù)y=ax+b的值大于(或小于)0的自變量x的取值范圍;從函數(shù)圖象的角度看,就是確定直線y=kx+b在y軸上(或下)方部分所有的點的橫坐標所構(gòu)成的集合.三、板書設(shè)計1.通過函數(shù)圖象確定一元一次不等式的解集2.一元一次不等式與一次函數(shù)的關(guān)系本課時主要是掌握運用一次函數(shù)的圖象解一元一次不等式,在教學(xué)過程中采用講練結(jié)合的方法,讓學(xué)生充分參與到教學(xué)活動中,主動、自主的學(xué)習(xí).

  • 北師大初中八年級數(shù)學(xué)下冊一元一次不等式與一次函數(shù)的綜合應(yīng)用教案

    北師大初中八年級數(shù)學(xué)下冊一元一次不等式與一次函數(shù)的綜合應(yīng)用教案

    解析:(1)根據(jù)題設(shè)條件,求出等量關(guān)系,列一元一次方程即可求解;(2)根據(jù)題設(shè)中的不等關(guān)系列出相應(yīng)的不等式,通過求解不等式確定最值,求最值時要注意自變量的取值范圍.解:設(shè)購進A種樹苗x棵,則購進B種樹苗(17-x)棵,(1)根據(jù)題意得80x+60(17-x)=1220,解得x=10,所以17-x=17-10=7,答:購進A種樹苗10棵,B種樹苗7棵;(2)由題意得17-x172,所需費用為80x+60(17-x)=20x+1020(元),費用最省需x取最小整數(shù)9,此時17-x=17-9=8,此時所需費用為20×9+1020=1200(元).答:購買9棵A種樹苗,8棵B種樹苗的費用最省,此方案所需費用1200元.三、板書設(shè)計一元一次不等式與一次函數(shù)關(guān)系的實際應(yīng)用分類討論思想、數(shù)形結(jié)合思想本課時結(jié)合生活中的實例組織學(xué)生進行探索,在探索的過程中滲透分類討論的思想方法,培養(yǎng)學(xué)生分析、解決問題的能力,從新課到練習(xí)都充分調(diào)動了學(xué)生的思考能力,為后面的學(xué)習(xí)打下基礎(chǔ).

  • 中班主題課件教案:“我的朋友”的主題反思

    中班主題課件教案:“我的朋友”的主題反思

    主題目標: 能關(guān)注周圍環(huán)境中的事物,初步了解并體驗人與人、人與整個環(huán)境和諧相處的快樂感覺;能在成人幫助下逐步形成與他人共處的良好態(tài)度;學(xué)習(xí)并嘗試與人交往的方式,促進社會交往能力的發(fā)展。 主題的開展: 本月以“我的朋友”為主題,圍繞“朋友都有誰、快快樂樂來玩耍、友好相處是朋友、”三個方面的內(nèi)容展開活動,環(huán)境方面突出的是我們有效的利用家長資源,帶動幼兒及教師家長的興趣。 俗話說:“有朋自遠方來”孩子年齡隨小,但他們也在逐漸與社會接軌,心中都有自己的好朋友,比如有的幼兒說“我爸爸是我的好朋友”“我班xxx 是我的好朋友” “xx班的xxx是我的好朋友”,為此我們組織幼兒完成好朋友畫像的活動。目的是通過幼兒講述,不僅提高幼兒口語表達能力。而且進一步增進好朋友之間的情感。

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