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人教版新課標(biāo)高中物理必修2重力勢能教案3篇

  • 人教版新課標(biāo)PEP小學(xué)英語三年級下冊How many教案

    人教版新課標(biāo)PEP小學(xué)英語三年級下冊How many教案

    一.溫故知新1.教師播放“One, two, three, four, five”歌曲的錄音帶,讓學(xué)生跟隨錄音一起唱。2.復(fù)習(xí)數(shù)字1-151)報數(shù):教師讓學(xué)生從1-15按順序用英文報數(shù),如果前一個學(xué)生報到15了,那么下一個學(xué)生就要從1再開始。2)游戲:叫號。教師把寫有one —fifteen的單詞卡發(fā)給學(xué)生,教師隨意說數(shù)字,誰拿著相應(yīng)的單詞卡,誰就站起來并大聲讀出該單詞。3.操練句型How many … can you see? I can see…和How many… do you have? I have…(使用15以內(nèi)的數(shù)字)二.新課呈現(xiàn) 1.教師將1-15的數(shù)字卡貼在黑板上,用其中的兩張組成一個算式,在兩張數(shù)字卡的中間寫上“+”號,其和為15以內(nèi),讓學(xué)生去計算,如Ten and five is fifteen.2.讓學(xué)生兩人一組,一個學(xué)生擺算式,另一個學(xué)生用英文說出結(jié)果。3.教師出示算式卡,如Nine and seven,讓學(xué)生快速說出兩數(shù)之和,并請最先說出答案的學(xué)生將算式用數(shù)字形式寫在黑板上,在單詞卡中找到相應(yīng)的單詞貼在和的位置上。

  • 人教版新課標(biāo)PEP小學(xué)英語四年級下冊Recycle 1教案

    人教版新課標(biāo)PEP小學(xué)英語四年級下冊Recycle 1教案

    1.Think and write接上一個環(huán)節(jié),老師說“Zoom is careless. Where are his things? Let’s look.” 讓學(xué)生看課本圖片,認真觀察。a. 教師給出例句,請同學(xué)仿照例句說出句子Zoom’s red shoes are in the library.Zoom’s green sweater is in the gym.b.學(xué)生完成課本圖片后的短文??梢哉页潭群玫耐瑢W(xué)在黑板上書寫。c.讓學(xué)生在小組內(nèi)朗讀句子。2. Let’s read..出示鐘表模型,老師撥出幾個有代表性的時間,學(xué)生分兩組用“What time is it ? It’s ........It’s time to ……”進行問答。老師在學(xué)生回答時把時間和活動寫在黑板上如下:Time Activities7:00 get up 7:30 go to school9:00have Chinese/math class10:00read books 或其他12:00 eat lunch3:15have P.E classOh, you have a busy day. Look, this is John’s day.a. 由上個環(huán)節(jié)引出John’s list. 教師引導(dǎo)學(xué)生仔細看Let’s read 部分的圖,閱讀John的活動時間表, 然后獨立完成句子的正誤判斷,最后進行檢查。b.讓學(xué)生再次讀John的活動時間表,回答下面的問題:What time does John go to school? Where does John read books?

  • 人教版新課標(biāo)PEP小學(xué)英語五年級下冊My Birthday教案

    人教版新課標(biāo)PEP小學(xué)英語五年級下冊My Birthday教案

    ① 教師詢問學(xué)生“What day is today?”,學(xué)生說出“Today is …”。而后又問學(xué)生:“What’s the date?”,幫助學(xué)生說出今天的具體日期:“It’s …”。 ② 讓學(xué)生拿出課前準備的年歷(最好是學(xué)生自己制作的),教師隨意指著某天詢問學(xué)生:“What’s the date?”,而后請學(xué)生拿著年歷相互用“What’s the date? It’s ….”進行問答練習(xí)。③ 教師拿著年歷從一月開始問學(xué)生:“Who has a birthday in January? Please stand up.”,而后教師問起立的學(xué)生:“What’s the date?”,讓一月份生日的學(xué)生答出具體日期。④ 請若干名學(xué)生代替老師進行提問,從二月到十二月?;顒铀模篖et’s talk教學(xué)參考時間:8分鐘① 教師播放對話錄音兩遍,而后提問:“When is Sarah’s birthday? When is Zhang’s birthday?”,學(xué)生根據(jù)對話內(nèi)容回答出:“Sarah’s birthday is in October1st. Zhang’s birthday’s is in March12th.”。 ② 學(xué)生跟讀對話,兩人一組做對話練習(xí)。 ③ 學(xué)生根據(jù)同學(xué)的生日組織一個新的對話,教師請若干組展示他們的對話。

  • 人教版新課標(biāo)PEP小學(xué)英語六年級上冊Recycle1教案

    人教版新課標(biāo)PEP小學(xué)英語六年級上冊Recycle1教案

    1.熱身(warm-up) (1)全班齊唱歌曲“How call I Get to the Zoo?’’ (2)師生一起吟唱第一單元的歌謠,要求學(xué)生一邊吟唱,一邊用手打節(jié)拍。 2.預(yù)習(xí)(Preview) 教師對學(xué)生有關(guān)My Dream Vacation的短文做出總體評價,并請幾名寫得有創(chuàng)意的學(xué)生朗讀他們的短文,教師針對其內(nèi)容提問,如:“Where are you going? What are you going to do? How are you going to there等。教師根據(jù)課前的準備,在最后一名學(xué)生朗讀完文章并回答了問題以后,簡化并板書該學(xué)生的回答,將其改編成為一首小歌謠,如: Where are you going? What are you going to do? I’m going to the ZOO to see the monkeys. I’m going by bike.I’m going On foot. I live near the ZOO.So I won’t take a train. 教師拍節(jié)拍示范朗讀自己改寫的新歌謠,學(xué)生模仿吟唱新歌謠。 3.新課呈現(xiàn)(Presentation) Let’s chant 在以上活動的基礎(chǔ)上,教師放Let’s chant部分的錄音,學(xué)生靜聽并試著跟讀,再看著文字吟唱。師生可進行問答式吟唱,并在小組間展開比賽。 Listen and match

  • 人教版新課標(biāo)PEP小學(xué)英語五年級上冊My New Teachers教案

    人教版新課標(biāo)PEP小學(xué)英語五年級上冊My New Teachers教案

    教師播放Let’s learn課件,提問:Guess, what does Wu Yifan do on Saturdays? 請3-4人回答后。用同樣方法完成watch TV, read books,請學(xué)生聽并且跟讀。繼續(xù)看課件,播放兩個男孩的對話,請學(xué)生聽并跟讀,注意語音、語調(diào)。 在句子中練習(xí)單詞,培養(yǎng)學(xué)生的表達能力。對話練習(xí)聽錄音中的對話 1-2遍,請同學(xué)說一說對話的內(nèi)容??蛇x擇自己喜歡的角色進行人機對話。分組練習(xí),向你的朋友詢問。培養(yǎng)學(xué)生的模仿力,并能在恰當(dāng)情境中靈活運用所學(xué)句型。Let’s chant B出示B部分的歌謠,請學(xué)生小聲試讀,可以讀出不同的節(jié)奏。播放歌謠,請學(xué)生仔細傾聽2-3遍,說到相對應(yīng)的地方,教師帶領(lǐng)學(xué)生指一指畫畫、看電視、讀書、玩電腦游戲這四種情景,幫助學(xué)生理解歌謠。請學(xué)生反復(fù)跟讀。分角色演唱,可拍手掌握節(jié)奏。 看一看、說一說幫助學(xué)生鞏固本課句型。轉(zhuǎn)盤游戲教師拿出課前制作好的大轉(zhuǎn)盤,上面有do homework, watch TV, read books這三幅圖畫。請一名學(xué)生撥動轉(zhuǎn)盤,轉(zhuǎn)盤快速轉(zhuǎn)動,停止時看指針指向哪一幅圖,該生提問What do you do on Sundays?其余同學(xué)回答,先回答出的同學(xué)可撥動轉(zhuǎn)盤,游戲繼續(xù)。

  • 新人教版高中英語必修3Unit 3 Diverse Cultures教學(xué)設(shè)計三

    新人教版高中英語必修3Unit 3 Diverse Cultures教學(xué)設(shè)計三

    The price is the same as(the price was)before the war.價格與戰(zhàn)前相同。(4)定語從句中的“關(guān)系代詞+助動詞be”可以省略。The ticket(that/which was)booked by his sister has been sent to him.他妹妹訂的那張票已送到了他那里。Step 5 PracticeActivity 3(1) Guide students to complete the four activities in the Using Structures part of exercise book, in which activities 1 and 2 focus on ellipsis in dialogue answers, activity 3 focus on signs and headlines, two typical situations where ellipsis is used, and activity 4 focus on ellipsis in diary, an informal style.(2) Combine the examples in the above activities, ask students to summarize the omitted situations in groups, and make their own summary into a poster, and post it on the class wall after class to share with the class.(This step should give full play to the subjectivity of students, and teachers should encourage students to conclude different ellipsis phenomena according to their own understanding, they can conclude according to the different parts omitted in the sentence.)Step 6 Homework1. Understand and master the usages of ellipsis;2. Finish the other exercises in Using structures of Workbook.1、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握省略的用法;2、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否根據(jù)上下文語境或情景恢復(fù)句子中省略的成分,體會使用省略的效果;3、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否獨立完成練習(xí)冊和導(dǎo)學(xué)案中的相關(guān)練習(xí)。

  • 新人教版高中英語必修3Unit 3 Diverse Cultures教學(xué)設(shè)計二

    新人教版高中英語必修3Unit 3 Diverse Cultures教學(xué)設(shè)計二

    (2)Consolidate key vocabulary.Ask the students to complete the exercises of activity 6 by themselves. Then ask them to check the answers with their partners.(The first language:Damage of the 1906 San Francisco earthquake and fire.A second language: Yunnan - one of the most diverse provinces in China).Step 5 Language points1. The teacher asks the students to read the text carefully, find out the more words and long and difficult sentences in the text and draw lines, understand the use of vocabulary, and analyze the structure of long and difficult sentences.2. The teacher explains and summarizes the usage of core vocabulary and asks the students to take notes.3. The teacher analyzes and explains the long and difficult sentences that the students don't understand, so that the students can understand them better.Step 6 Homework1. Read the text again, in-depth understanding of the text;2. Master the use of core vocabulary and understand the long and difficult sentences.3. Complete relevant exercises in the guide plan.1、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握閱讀文本中的新詞匯的意義與用法;2、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否結(jié)合文本特點了解文章的結(jié)構(gòu)和作者的寫作邏輯;3、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否了解舊金山的城市風(fēng)貌、文化特色,以及加利福尼亞州的歷史,體會多元文化對美國的影響。

  • 新人教版高中英語必修3Unit 3 Diverse Cultures教學(xué)設(shè)計四

    新人教版高中英語必修3Unit 3 Diverse Cultures教學(xué)設(shè)計四

    該板塊的活動主題是“介紹一個有顯著文化特征的地方”( Describe a place with distinctive cultural identity)。該板塊通過介紹中國城繼續(xù)聚焦中國文化。本單元主題圖呈現(xiàn)的是舊金山中國城的典型景象, Reading and Thinking部分也提到中國城,為該板塊作鋪墊。介紹中國城的目的主要是體現(xiàn)中國文化與美國多元文化的關(guān)系,它是美國多元文化的重要組成部分。中國城也是海外華人的精神家園和傳播中國文化的重要窗口,外國人在中國城能近距離體驗中國文化。1. Read the text to understand the cultural characteristics of Chinatown in San Francisco and the relationship between Chinese culture and American multiculturalism;2. Through reading, learn to comb the main information of the article, understand the author's writing purpose and writing characteristics;3. Learn to give a comprehensive, accurate, and organized description of the city or town you live in;Learn to revise and evaluate your writing.Importance:1. Guide the students to read the introduction of Chinatown in San Francisco and grasp its writing characteristics;2. Guide students to introduce their city or town in a comprehensive, accurate and organized way;3. Learn to comb the main information of the article, understand the author's writing purpose, and master the core vocabulary.

  • 新人教版高中英語必修3Unit 3 Diverse Cultures教學(xué)設(shè)計一

    新人教版高中英語必修3Unit 3 Diverse Cultures教學(xué)設(shè)計一

    Activity 81.Grasp the main idea of the listening.Listen to the tape and answer the following questions:Who are the two speakers in the listening? What is their relationship?What is the main idea of the first part of the listening? How about the second part?2.Complete the passage.Ask the students to quickly review the summaries of the two listening materials in activity 2. Then play the recording for the second time.Ask them to complete the passage and fill in the blanks.3.Play the recording again and ask the students to use the structure diagram to comb the information structure in the listening.(While listening, take notes. Capture key information quickly and accurately.)Step 8 Talking Activity 91.Focus on the listening text.Listen to the students and listen to the tape. Let them understand the attitudes of Wu Yue and Justin in the conversation.How does Wu Yue feel about Chinese minority cultures?What does Justin think of the Miao and Dong cultures?How do you know that?2.learn functional items that express concerns.Ask students to focus on the expressions listed in activity. 3.And try to analyze the meaning they convey, including praise (Super!).Agree (Exactly!)"(You're kidding.!)Tell me more about it. Tell me more about it.For example, "Yeah Sure." "Definitely!" "Certainly!" "No kidding!" "No wonder!" and so on.4.Ask the students to have conversations in small groups, acting as Jsim and his friends.Justin shares his travels in Guizhou with friends and his thoughts;Justin's friends should give appropriate feedback, express their interest in relevant information, and ask for information when necessary.In order to enrich the dialogue, teachers can expand and supplement the introduction of Miao, dong, Lusheng and Dong Dage.After the group practice, the teacher can choose several groups of students to show, and let the rest of the students listen carefully, after listening to the best performance of the group, and give at least two reasons.

  • 新人教版高中英語必修3Unit 1 Festivals and Celebrations教學(xué)設(shè)計三

    新人教版高中英語必修3Unit 1 Festivals and Celebrations教學(xué)設(shè)計三

    *wide range of origins(= a great number of different origins, many kinds of origins)*It featured a parade and a great feast with music, dancing, and sports. (=A parade and a great feast with music, dancing, and sports were included as important parts of the Egyptian harvest festival.)*.. some traditions may fade away and others may be established.(= Some traditions may disappear gradually, while other new traditions may come into being.)Step 6 Practice(1) Listen and follow the tape.The teacher may remind the students to pay attention to the meaning and usage of the black words in the context, so as to prepare for the completion of the blanks in activity 5 and vocabulary exercises in the exercise book.(2) Students complete the text of activity 5 by themselves.The teacher needs to remind the students to fill in the blanks with the correct form of the vocabulary they have learned in the text.Students exchange their answers with their partners, and then teachers and students check their answers.(3)Finish the Ex in Activity 5 of students’ book.Step 7 Homework1. Read the text again, in-depth understanding of the text;2. Discuss the origin of festivals, the historical changes of related customs, the influence of commercial society on festivals and the connotation and essential meaning of festivals.3. Complete relevant exercises in the guide plan.1、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握閱讀文本中的新詞匯的意義與用法;2、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否結(jié)合文本特點快速而準確地找到主題句;3、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否理清論說文的語篇結(jié)構(gòu)和文本邏輯,了解節(jié)日風(fēng)俗發(fā)展與變遷,感悟節(jié)日的內(nèi)涵與意義。

  • 新人教版高中英語必修3Unit 1 Festivals and Celebrations教學(xué)設(shè)計二

    新人教版高中英語必修3Unit 1 Festivals and Celebrations教學(xué)設(shè)計二

    1. Ss look at the picture and scan the passage to understand the main idea while teacher is giving the following questions to inspire Ss to think.*Where are those people?*What are they doing?*Why are they so excited?2. Ss complete the passage with the appropriate -ing form. Then discuss and check the answers with class.Answers: boring, interesting, taking, exciting, amazing3. The teacher raises questions for the students to discuss and encourages them to express their opinions.*Do you like La Tomatina? Why or why not?4. Each group representative reports the discussion result, the teacher gives feedback and the evaluation.Step 6 PracticeActivity 41. Ss complete the Ex 2 in Using structures.2. Check the answers after finishing the exercises.①The dragon boat races are the most exciting part of the Dragon Boat Festival.② The children were excited to go Easter egg hunting.③What an amazing performance! This is the best music festival I have ever been to.④We were amazed by her funny-looking hat.⑤His inspiring speech at the conference won the admiration/ favour of the audience.⑥This is a challenging game to test your memory and observation capabilities. 3. T asks Ss to finish Ex 3 and 4 in Using structures by themselves, then check the answers with class.Step 6 Homework1. Understand and master the functions and usage of the -ing form;2. Finish the other exercises in Using structures.1、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握動詞-ing形式作定語和表語的功能和意義;2、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否在理解文段內(nèi)容的基礎(chǔ)上,根據(jù)上下文語境和表達邏輯,能正確運用動詞-ing形式描述節(jié)日慶典。3、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否歸納和積累用于表達情緒的相關(guān)詞匯。

  • 新人教版高中英語必修3Unit 1 Festivals and Celebrations教學(xué)設(shè)計一

    新人教版高中英語必修3Unit 1 Festivals and Celebrations教學(xué)設(shè)計一

    本板塊的活動主題是“談?wù)摴?jié)日活動”(Talk about festival activities),主要是從貼近學(xué)生日常生活的角度來切入“節(jié)日”主題。學(xué)生會聽到發(fā)生在三個國家不同節(jié)日場景下的簡短對話,對話中的人們正在參與或?qū)⒁H歷不同的慶?;顒?。隨著全球化的進程加速,國際交流日益頻繁,無論是國人走出國門還是外國友人訪問中國,都已成為司空見慣的事情。因此,該板塊所選取的三個典型節(jié)日場景都是屬于跨文化交際語境,不僅每組對話中的人物來自不同的文化背景,對話者的身份和關(guān)系也不盡相同。1. Master the new words related to holiday: the lantern, Carnival, costume, dress(sb)up, march, congratulation, congratulate, riddle, ceremony, samba, make - up, after all. 2. To understand the origin of major world festivals and the activities held to celebrate them and the significance of these activities;3. Improve listening comprehension and oral expression of the topic by listening and talking about traditional festivals around the world;4. Improve my understanding of the topic by watching pictures and videos about different traditional festivals around the world;5. Review the common assimilation phenomenon in English phonetics, can distinguish the assimilated phonemes in the natural language flow, and consciously use the assimilation skill in oral expression. Importance:1. Guide students to pay attention to the attitude of the speaker in the process of listening, and identify the relationship between the characters;2. Inspire students to use topic words to describe the festival activities based on their background knowledge. Difficulties:In the process of listening to the correct understanding of the speaker's attitude, accurately identify the relationship between the characters.

  • 人教版高中生物必修1細胞增殖說課稿

    人教版高中生物必修1細胞增殖說課稿

    f.有絲分裂的意義(討論分析教學(xué)),首先引導(dǎo)學(xué)生結(jié)合所學(xué)知識討論有絲分裂的的作用,最后有教師歸納總結(jié),并要求學(xué)生在理解的基礎(chǔ)上記憶。g.無絲分裂(圖形直觀教學(xué)、簡介),本部分內(nèi)容不是教學(xué)的重點,內(nèi)容也相對簡單,所以我的教學(xué)方法是直接給學(xué)生展示掛圖,再進行簡短介紹,讓學(xué)生了解即可。h.引出減數(shù)分裂的概念,為第五章學(xué)習(xí)打下基礎(chǔ)。小結(jié):新課講完以后由教師對本節(jié)內(nèi)容進行總結(jié)鞏固和反饋:進行一些課堂練習(xí)達到鞏固和反饋的作用。最后布置作業(yè),各種難度的作業(yè)題目均設(shè)置一些,其中簡單題比重大,難題要求學(xué)生選作,這樣提高學(xué)生學(xué)習(xí)積極性。2教學(xué)媒體程序設(shè)計: 細胞周期的概念(多媒體課件演示周期動畫)植物細胞有絲分裂(多媒體課件演示分裂各期動畫)動植物細胞有絲分裂異同點(多媒體課件演示分裂各期動畫)有絲分裂過程中DNA和染色體數(shù)量的變化規(guī)律(掛圖演示,包括表格和函數(shù)圖象)

  • 人教版高中生物必修1細胞的癌變說課稿

    人教版高中生物必修1細胞的癌變說課稿

    5.5癌癥的預(yù)防作為本節(jié)最重要內(nèi)容,且與生活息息相關(guān),我采用老師引導(dǎo)、學(xué)生討論總結(jié)的方法進行教學(xué)。從生活各方面總結(jié)出保健良方 ,既對知識有很好應(yīng)用,又體現(xiàn)對生命的熱愛。此時,本節(jié)課達到高潮,同學(xué)們意氣風(fēng)發(fā),熱烈討論,實現(xiàn)本節(jié)課的教學(xué)目標(biāo)。5.6 癌癥的治療通過講述癌癥治療方法的副作用,激發(fā)學(xué)生探究生物學(xué)欲望,激勵學(xué)生立志除癌。 在此,我選用一則關(guān)于一名癌癥晚期病人運用心理療法成功戰(zhàn)勝癌癥的故事,在于對不同層次的學(xué)生進行多方面啟發(fā)教育,體現(xiàn)面向全體學(xué)生的課程理念。5.7 愉悅總結(jié),及時反饋本節(jié)知識點零散,我將帶領(lǐng)學(xué)生回憶瀏覽本節(jié)內(nèi)容,使零散知識點系統(tǒng)化。在課堂反饋環(huán)節(jié),我通過簡單練習(xí)采用分組競答的方式把握學(xué)生對知識的掌握程度,并給予表現(xiàn)突出的學(xué)生適當(dāng)獎勵,這是本節(jié)課第三個亮點。競答既使課堂顯得緊湊、集中,又有利于形成學(xué)生的競爭意識,還使得學(xué)生的知識得以鞏固應(yīng)用。

  • 人教版高中生物必修1細胞的衰老與凋亡說課稿

    人教版高中生物必修1細胞的衰老與凋亡說課稿

    4、最后從生物的壽命引入,探討細胞的死亡。強調(diào)細胞死亡有兩種形式。(1).細胞壞死,它是由某些外界因素造成細胞急速死亡,是一種被動性死亡;(2).細胞凋亡,這是一種由特定基因控制的主動性死亡。細胞壞死與細胞凋亡在形態(tài)學(xué)和生物化學(xué)上有著明顯的區(qū)別。細胞凋亡有廣泛的生物學(xué)意義,比如胚胎發(fā)育期手的發(fā)育如果沒有細胞的調(diào)亡就不會有纖細的手指;如果沒有正常的細胞調(diào)亡,蝌蚪的尾部就不會消失,它將永遠不能變成青蛙……。正常的細胞調(diào)亡還肩負著維持各種組織器官固有體積和形態(tài)的功能;還會使機體內(nèi)異常的細胞得到及時清除,去處潛在的隱患;例如癌癥就是異常的細胞沒有及時死亡的結(jié)果……。因此細胞的正常死亡是生物體的一種非常重要的調(diào)節(jié)機制,是機體平衡細胞增殖,調(diào)節(jié)機體細胞樹木恒定的方式,是必不可少的生命過程。(15分鐘)5、課堂小結(jié),可以把課堂傳授的知識盡快地轉(zhuǎn)化為學(xué)生的素質(zhì);簡單扼要的課堂小結(jié),可使學(xué)生更深刻地理解政治理論在實際生活中的應(yīng)用,并且逐漸地培養(yǎng)學(xué)生具有良好的個性。

  • 人教版高中生物必修1細胞分化說課稿

    人教版高中生物必修1細胞分化說課稿

    在講述細胞分化的意義時,也可以用實例來解決,工廠的生產(chǎn)車間里不同的工人干著不同的工作,一件產(chǎn)品的產(chǎn)出需要這些工人才能創(chuàng)造出來,一個生物體就像一個車間一樣,不同的細胞各司其職,相互合作。工人的分工是主管調(diào)解出來的,而不同細胞的出現(xiàn)就是細胞分化的結(jié)果,所以說,細胞的分化是生物體發(fā)育的基礎(chǔ)。在講到細胞全能性的時候,要多給學(xué)生舉些關(guān)于細胞全能性的例子,如植物組織培養(yǎng)、克隆技術(shù)等等,讓學(xué)生從實際的例子中真正的悟出細胞全能性的含義。此外,還要重視教材中的疑問,適當(dāng)對題目進行引申,使它的作用更加突出,有利于學(xué)生對知識的串聯(lián)、積累、加工,從而達到舉一反三的效果。怎樣來解釋細胞的全能性呢?這主要以講授法來解釋了,細胞全能性的體現(xiàn)需要在組織或器官離體后才能體現(xiàn)出來,每個細胞都包含著生物體的全套遺傳基因,通過基因選擇性的表達,使離體的組織或器官通過分裂和分化逐漸發(fā)育成完整的植株。

  • 人教版高中語文必修3《馬嵬(其二)》說課稿

    人教版高中語文必修3《馬嵬(其二)》說課稿

    生2:頷聯(lián)的意思是只聽到禁衛(wèi)軍中傳來夜間巡邏的梆子聲,不再向?qū)m中那樣安逸地聽到有雞人打鳴報時的聲音了。生3:頸聯(lián)的意思是說事變發(fā)生那天軍隊發(fā)生嘩變停留不前,但當(dāng)年唐玄宗以為自己可以和貴妃天天在一起,對天上的牽牛和織女一年一度的會見還加以嘲笑呢。生4:尾聯(lián)的含義是為什么唐玄宗當(dāng)了四十五年的皇帝,還不如普通百姓夫妻恩愛,長相廝守。師:好的。請大家再齊讀一遍詩文,做到人人都能疏通詩的含義。學(xué)生再次齊讀。第三環(huán)節(jié):專項探究師:白居易曾說:“文章合為時而著,歌詩合為事而作。”這首詩就是作者途經(jīng)馬嵬驛,詠馬嵬之變這一歷史事件而作,所以我們鑒賞的第三步,就是通過標(biāo)題和詩文,弄清詩中的歷史事件。請同學(xué)們找出詩中哪些詩句描述了這一事件?

  • 人教版高中語文必修3《杜甫詩三首》說課稿

    人教版高中語文必修3《杜甫詩三首》說課稿

    我以以《登高》為例,引導(dǎo)學(xué)生進行意象分析,感悟意境美。古人云“立象以盡意”“古詩之妙,專求意象”意象是詩人情感的載體,是詩歌的靈魂。引導(dǎo)學(xué)生張開聯(lián)想和想象的翅膀去感受,去體驗是意象,詩歌鑒賞的關(guān)鍵。科林伍德說“真正藝術(shù)的作品,不是看見的,也不是聽到的,而是想象中的某種東西?!痹娙送ㄟ^想象創(chuàng)造出詩的形象,我們讀者通過想象豐富地再現(xiàn)詩人創(chuàng)造的形象。而感受體驗則是以全部身心投入作品,心靈與心靈相溝通,感情與感情相交流,對詩人的想象活動進行再經(jīng)歷和再體驗。因此,在引導(dǎo)意象解讀中,我先讓學(xué)生點擊這一個,就是通過抓修飾詞、依據(jù)感情基調(diào)、展開想象具體分析本詩中每個意象的情感意蘊和審美意蘊,使學(xué)生明白意象在每首詩中的獨特性。

  • 人教版高中歷史必修3啟蒙運動說課稿

    人教版高中歷史必修3啟蒙運動說課稿

    教材地位本課具有承上啟下的作用,前承文藝復(fù)興,后啟資產(chǎn)階級革命時代的到來,啟蒙運動為資本主義社會構(gòu)建了一套政治藍圖,具有前瞻性,是近代第二次思想解放運動。因此,本節(jié)內(nèi)容在整個教材中有著很重要的地位。教學(xué)目標(biāo)1、知識目標(biāo):(1)幫助學(xué)生了解啟蒙運動的性質(zhì)、內(nèi)容和主要啟蒙 思想家及其主張。(2)理解啟蒙運動興起的背景、影響。2、能力目標(biāo):(1)在討論和探究過程中訓(xùn)練學(xué)生的科學(xué)思維方法和自主學(xué)習(xí)的能力和掌握解題的方法。(2)通過指導(dǎo)學(xué)生閱讀啟蒙思想家的言論資料,培養(yǎng)學(xué)生對歷史資料的理解和歸納能力。3、情感價值目標(biāo):(1)培養(yǎng)人文意識,強化法治觀念。(2)培養(yǎng)學(xué)生的團結(jié)協(xié)作精神和競爭意識。教學(xué)重點、難點(1)教學(xué)重點:啟蒙思想家的主張及啟蒙運動的影響。

  • 人教版高中歷史必修3輝煌燦爛的文學(xué)說課稿

    人教版高中歷史必修3輝煌燦爛的文學(xué)說課稿

    教師:不同的時代造就了不同風(fēng)格和不同精神內(nèi)容的詩詞,請同學(xué)們回顧必修一和必修二兩宋中央集權(quán)的加強和經(jīng)濟的發(fā)展?fàn)顩r。學(xué)生:回憶回答。教師:請同學(xué)們結(jié)合時代背景和詞的特點理解詞為什么能夠成為宋代文學(xué)的主流形式和標(biāo)志?學(xué)生:兩宋時經(jīng)濟重心轉(zhuǎn)移到了南方,商業(yè)發(fā)展打破了時間和空間的限制,城市繁榮,市民數(shù)量不斷增加。詞的句子長短不齊,便于抒發(fā)感情,并且能夠歌唱,更能適應(yīng)市井生活的需要。于是,詞成為宋代文學(xué)的主流形式和標(biāo)志。教師:宋代文人地位提高,宋詞就是一個個時代的畫卷:大宋的悲歡離合都寫在了里面。除了詞之外,宋代民間還興起了一種新的詩歌形式,即散曲。學(xué)生:回答散曲的發(fā)展階段及特點、元曲的含義、特點。教師:在中國古代詩歌輝煌發(fā)展的同時,也產(chǎn)生了供人們閑來無事消遣的小說。

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