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新人教版高中英語(yǔ)必修3Unit 2 Morals and Virtues-Reading for Writing教學(xué)設(shè)計(jì)
1. 這個(gè)寓言是一個(gè)關(guān)于一位國(guó)王古寓言。 The fable is an old fable about a king.2.作者用這個(gè)故事讓讀者對(duì)于社區(qū)的問(wèn)題負(fù)有個(gè)人責(zé)任的必要印象深刻。The author used the story to impress upon readers with the need to take personal responsibility for problems in the community.3. 這個(gè)故事十分成功的實(shí)現(xiàn)了它的目的。The story was quite successful in achieving its purpose.Step 7 WritingPlease write a review of the story according the outline above.The fable is an old fable about a king who thought his people are lazy, so he put a large stone in the middle of the road and hides and waited to see if anyone will try to move it.The author used this story to impress upon readers with the need to take personal responsibility for problems in the community. The story was quite successful in achieving its purpose, and I liked it because it had a clear moral.However, while the moral of the story is clear, the actions of the king seemed pointless to me, because none of the characters in the story learnt anything. For this reason, I think there are better stories that can be used to impress upon people with the need for personal responsibility.Step 8 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1. Does the writer give a short description of the story ?2. Does the description include the most important details of the story ?3. Does the writer give his or her opinion about the character or their actions ?4. Is the review well-organised ? 5. Does the writer use the -ing form as the adverbial correctly in the writing ?6. Are there any grammar, spelling, or punctuation errors ?Step 9 HomeworkPut up your revised draft in the classroom or read it to your class.
新人教版高中英語(yǔ)選修2Unit 1 Science and Scientists-Discovering useful structures教學(xué)設(shè)計(jì)
The grammatical structure of this unit is predicative clause. Like object clause and subject clause, predicative clause is one of Nominal Clauses. The leading words of predicative clauses are that, what, how, what, where, as if, because, etc.The design of teaching activities aims to guide students to perceive the structural features of predicative clauses and think about their ideographic functions. Beyond that, students should be guided to use this grammar in the context apporpriately and flexibly.1. Enable the Ss to master the usage of the predicative clauses in this unit.2. Enable the Ss to use the predicative patterns flexibly.3. Train the Ss to apply some skills by doing the relevant exercises.1.Guide students to perceive the structural features of predicative clauses and think about their ideographic functions.2.Strengthen students' ability of using predicative clauses in context, but also cultivate their ability of text analysis and logical reasoning competence.Step1: Underline all the examples in the reading passage, where noun clauses are used as the predicative. Then state their meaning and functions.1) One theory was that bad air caused the disease.2) Another theory was that cholera was caused by an infection from germs in food or water.3) The truth was that the water from the Broad Street had been infected by waste.Sum up the rules of grammar:1. 以上黑體部分在句中作表語(yǔ)。2. 句1、2、3中的that在從句中不作成分，只起連接作用。 Step2: Review the basic components of predicative clauses1.Definition
新人教版高中英語(yǔ)選修2Unit 4 Journey Across a Vast Land教學(xué)設(shè)計(jì)
當(dāng)孩子們由父母陪同時(shí)，他們才被允許進(jìn)入這個(gè)運(yùn)動(dòng)場(chǎng)。3．過(guò)去分詞(短語(yǔ))作狀語(yǔ)時(shí)的幾種特殊情況(1)過(guò)去分詞(短語(yǔ))在句中作時(shí)間、條件、原因、讓步狀語(yǔ)時(shí)，相當(dāng)于對(duì)應(yīng)的時(shí)間、條件、原因及讓步狀語(yǔ)從句。Seen from the top of the mountain (＝When it is seen from the top of the mountain), the whole town looks more beautiful.從山頂上看，整個(gè)城市看起來(lái)更美了。Given ten more minutes (＝If we are given ten more minutes), we will finish the work perfectly.如果多給十分鐘，我們會(huì)完美地完成這項(xiàng)工作。Greatly touched by his words (＝Because she was greatly touched by his words), she was full of tears.由于被他的話深深地感動(dòng)，她滿眼淚花。Warned of the storm (＝Though they were warned of the storm), the farmers were still working on the farm.盡管被警告了風(fēng)暴的到來(lái)，但農(nóng)民們?nèi)栽谵r(nóng)場(chǎng)干活。(2)過(guò)去分詞(短語(yǔ))在句中作伴隨、方式等狀語(yǔ)時(shí)，可改為句子的并列謂語(yǔ)或改為并列分句。The teacher came into the room, followed by two students (＝and was followed by two students)．后面跟著兩個(gè)學(xué)生，老師走進(jìn)了房間。He spent the whole afternoon, accompanied by his mom(＝and was accompanied by his mom)．他由母親陪著度過(guò)了一整個(gè)下午。
新人教版高中英語(yǔ)選修2Unit 1 Science and Scientists-Learning about Language教學(xué)設(shè)計(jì)
Step 7: complete the discourse according to the grammar rules.Cholera used to be one of the most 1.__________ (fear) diseases in the world. In the early 19th century, _2_________ an outbreak of cholera hit Europe, millions of people died. But neither its cause, 3__________ its cure was understood. A British doctor, John Snow, wanted to solve the problem and he knew that cholera would not be controlled _4_________ its cause was found. In general, there were two contradictory theories 5 __________ explained how cholera spread. The first suggested that bad air caused the disease. The second was that cholera was caused by an _6_________(infect) from germs in food or water. John Snow thought that the second theory was correct but he needed proof. So when another outbreak of cholera hit London in 1854, he began to investigate. Later, with all the evidence he _7_________ (gather), John Snow was able to announce that the pump water carried cholera germs. Therefore, he had the handle of the pump _8_________ (remove) so that it couldn't be used. Through his intervention，the disease was stopped in its tracks. What is more, John Snow found that some companies sold water from the River Thames that __9__________________ (pollute) by raw waste. The people who drank this water were much more likely _10_________ (get) cholera than those who drank pure or boiled water. Through John Snow's efforts, the _11_________ (threaten) of cholera around the world saw a substantial increase. Keys： 1.feared 2.when 3. nor 4.unless 5.that/which 6.infection 7.had gathered 8.removed 9.was polluted 10.to get 11. threat
新人教版高中英語(yǔ)選修2Unit 1 Science and Scientists-Reading and thinking教學(xué)設(shè)計(jì)
Step 5： After learning the text, discuss with your peers about the following questions:1.John Snow believed Idea 2 was right. How did he finally prove it?2. Do you think John Snow would have solved this problem without the map?3. Cholera is a 19th century disease. What disease do you think is similar to cholera today?SARS and Covid-19 because they are both deadly and fatally infectious, have an unknown cause and need serious public health care to solve them urgently.keys:1. John Snow finally proved his idea because he found an outbreak that was clearly related to cholera, collected information and was able to tie cases outside the area to the polluted water.2. No. The map helped John Snow organize his ideas. He was able to identify those households that had had many deaths and check their water-drinking habits. He identified those houses that had had no deaths and surveyed their drinking habits. The evidence clearly pointed to the polluted water being the cause.3. SARS and Covid-19 because they are both deadly and fatally infectious, have an unknown cause and need serious public health care to solve them urgently.Step 6: Consolidate what you have learned by filling in the blanks:John Snow was a well-known _1___ in London in the _2__ century. He wanted to find the _3_____ of cholera in order to help people ___4_____ it. In 1854 when a cholera __5__ London, he began to gather information. He ___6__ on a map ___7___ all the dead people had lived and he found that many people who had ___8____ (drink) the dirty water from the __9____ died. So he decided that the polluted water ___10____ cholera. He suggested that the ___11__ of all water supplies should be _12______ and new methods of dealing with ____13___ water be found. Finally, “King Cholera” was __14_____.Keys: 1. doctor 2. 19th 3.cause 4.infected with 5.hit 6.marked 7.where 8.drunk 9.pump 10.carried 11.source 12.examined 13.polluted 14.defeatedHomework: Retell the text after class and preview its language points
新人教版高中英語(yǔ)選修2Unit 1 Science and Scientists-Using langauge教學(xué)設(shè)計(jì)
This happens because the dish soap molecules have a strong negative charge, and the milk molecules have a strong positive charge. Like magnets, these molecules are attracted to each other, and so they appear to move around on the plate, taking the food coloring with them, making it look like the colors are quickly moving to escape from the soap.Listening text:? Judy: Oh, I'm so sorry that you were ill and couldn't come with us on our field trip. How are you feeling now? Better?? Bill: Much better, thanks. But how was it?? Judy: Wonderful! I especially liked an area of the museum called Light Games.it was really cool. They had a hall of mirrors where I could see myself reflected thousands of times!? Bill: A hall of mirrors can be a lot of fun. What else did they have?? Judy: Well, they had an experiment where we looked at a blue screen for a while, and then suddenly we could see tiny bright lights moving around on it. You'll never guess what those bright lights were!? Bill: Come on, tell me!? Judy: They were our own blood cells. For some reason, our eyes play tricks on us when we look at a blue screen, and we can see our own blood cells moving around like little lights! But there was another thing I liked better. I stood in front of a white light, and it cast different shadows of me in every color of the rainbow!? Bill: Oh, I wish I had been there. Tell me more!? Judy: Well, they had another area for sound. They had a giant piano keyboard that you could use your feet to play. But then, instead of playing the sounds of a piano, it played the voices of classical singers! Then they had a giant dish, and when you spoke into it, it reflected the sound back and made it louder. You could use it to speak in a whisper to someone 17 meters away.? Bill: It all sounds so cool. I wish I could have gone with you? Judy: I know, but we can go together this weekend. I'd love to go there again!? Bill: That sounds like a great idea!
新人教版高中英語(yǔ)選修2Unit 3 Food and Culture-Discovering useful structures教學(xué)設(shè)計(jì)
The newspaper reported more than 100 people had been killed in the thunderstorm.報(bào)紙報(bào)道說(shuō)有一百多人在暴風(fēng)雨中喪生。(2)before、when、by the time、until、after、once等引導(dǎo)的時(shí)間狀語(yǔ)從句的謂語(yǔ)是一般過(guò)去時(shí)，以及by、before后面接過(guò)去的時(shí)間時(shí)，主句動(dòng)作發(fā)生在從句的動(dòng)作或過(guò)去的時(shí)間之前且表示被動(dòng)時(shí)，要用過(guò)去完成時(shí)的被動(dòng)語(yǔ)態(tài)。By the time my brother was 10, he had been sent to Italy.我弟弟10歲前就已經(jīng)被送到意大利了。Tons of rice had been produced by the end of last month. 到上月底已生產(chǎn)了好幾噸大米。(3) It was the first/second/last ... time that ...句中that引導(dǎo)的定語(yǔ)從句中，主語(yǔ)與謂語(yǔ)構(gòu)成被動(dòng)關(guān)系時(shí)，要用過(guò)去完成時(shí)的被動(dòng)語(yǔ)態(tài)。It was the first time that I had seen the night fact to face in one and a half years. 這是我一年半以來(lái)第一次親眼目睹夜晚的景色。(4)在虛擬語(yǔ)氣中，條件句表示與過(guò)去事實(shí)相反，且主語(yǔ)與謂語(yǔ)構(gòu)成被動(dòng)關(guān)系時(shí)，要用過(guò)去完成時(shí)的被動(dòng)語(yǔ)態(tài)。If I had been instructed by him earlier, I would have finished the task.如果我早一點(diǎn)得到他的指示，我早就完成這項(xiàng)任務(wù)了。If I had hurried, I wouldn't have missed the train.如果我快點(diǎn)的話，我就不會(huì)誤了火車。If you had been at the party, you would have met him. 如果你去了晚會(huì)，你就會(huì)見到他的。
新人教版高中英語(yǔ)選修2Unit 3 Food and Culture-Reading and thinking教學(xué)設(shè)計(jì)
The discourse explores the link between food and culture from a foreign’s perspective and it records some authentic Chinese food and illustrates the cultural meaning, gerography features and historic tradition that the food reflects. It is aimed to lead students to understand and think about the connection between food and culture. While teaching, the teacher should instruct students to find out the writing order and the writer’s experieces and feelings towards Chinese food and culture.1.Guide the students to read the text, sort out the information and dig out the topic.2.Understand the cultural connotation, regional characteristics and historical tradition of Chinese cuisine3.Understand and explore the relationship between food and people's personality4.Guide the students to use the cohesive words in the text5.Lead students to accurately grasp the real meaning of the information and improve the overall understanding ability by understanding the implied meaning behind the text.1. Enable the Ss to understand the structure and the writing style of the passage well.2. Lead the Ss to understand and think further about the connection between food and geography and local character traits.Step1: Prediction before reading. Before you read, look at the title, and the picture. What do you think this article is about?keys:It is about various culture and cuisine about a place or some countries.
新人教版高中英語(yǔ)選修2Unit 5 First Aid-Discovering useful structures教學(xué)設(shè)計(jì)
You have no excuse for not going.你沒(méi)有理由不去。He was punished for not having finished his homework.他因未完成作業(yè)而受到懲罰。2．動(dòng)詞ing形式復(fù)合結(jié)構(gòu)由物主代詞或人稱代詞賓格、名詞所有格或普通格加動(dòng)詞ing，即“sb./sb.'s＋doing”構(gòu)成。動(dòng)詞ing形式的復(fù)合結(jié)構(gòu)實(shí)際上是給動(dòng)詞ing形式加了一個(gè)邏輯主語(yǔ)。動(dòng)詞ing形式的復(fù)合結(jié)構(gòu)有四種形式：①形容詞性物主代詞＋動(dòng)詞ing②名詞所有格＋動(dòng)詞ing③代詞賓格＋動(dòng)詞ing④名詞＋動(dòng)詞ingHer coming to help encouraged all of us.她來(lái)幫忙鼓舞了我們所有人。The baby was made awake by the door suddenly shutting.這個(gè)嬰兒被突然的關(guān)門聲吵醒了。Can you imagine him/Jack cooking at home?你能想象他/杰克在家做飯的樣子嗎？無(wú)生命名詞無(wú)論是作主語(yǔ)還是作賓語(yǔ)都不能用第②種形式。Tom's winning first prize last year impressed me a lot.湯姆去年得了一等獎(jiǎng)使我印象深刻。Do you mind my/me/Jack's/Jack leaving now?你介意我/杰克現(xiàn)在離開嗎？Excuse me for my not coming on time．很抱歉我沒(méi)能按時(shí)來(lái)。His father's being ill made him worried.他父親病了，他很擔(dān)心。We are looking forward to the singer's/the singer to give us a concert.我們盼望著這位歌手來(lái)給我們舉辦一場(chǎng)演唱會(huì)。
人教版高中數(shù)學(xué)選修3離散型隨機(jī)變量及其分布列(2)教學(xué)設(shè)計(jì)
溫故知新 1.離散型隨機(jī)變量的定義可能取值為有限個(gè)或可以一一列舉的隨機(jī)變量,我們稱為離散型隨機(jī)變量.通常用大寫英文字母表示隨機(jī)變量,例如X,Y,Z;用小寫英文字母表示隨機(jī)變量的取值,例如x,y,z.隨機(jī)變量的特點(diǎn): 試驗(yàn)之前可以判斷其可能出現(xiàn)的所有值，在試驗(yàn)之前不可能確定取何值；可以用數(shù)字表示2、隨機(jī)變量的分類①離散型隨機(jī)變量:X的取值可一、一列出；②連續(xù)型隨機(jī)變量:X可以取某個(gè)區(qū)間內(nèi)的一切值隨機(jī)變量將隨機(jī)事件的結(jié)果數(shù)量化．3、古典概型:①試驗(yàn)中所有可能出現(xiàn)的基本事件只有有限個(gè)；②每個(gè)基本事件出現(xiàn)的可能性相等。二、探究新知探究1.拋擲一枚骰子,所得的點(diǎn)數(shù)X有哪些值？取每個(gè)值的概率是多少？ 因?yàn)閄取值范圍是{1，2，3，4，5，6}而且"P(X=m)"=1/6,m=1,2,3,4,5,6.因此X分布列如下表所示
利用計(jì)算器進(jìn)行有理數(shù)的計(jì)算教案教學(xué)設(shè)計(jì)
計(jì)算器的面板是由鍵盤和顯示器組成的。顯示器是用來(lái)顯示輸入的數(shù)據(jù)和計(jì)算結(jié)果的裝置。顯示器因計(jì)算器的種類不同而不同，有單行顯示的，也有雙行顯示的。在鍵盤的每個(gè)鍵上，都標(biāo)明了這個(gè)鍵的功能。我們看鍵盤上標(biāo)有的鍵，是開機(jī)鍵，在開始使用計(jì)算器時(shí)先要按一下這個(gè)鍵，以接通電源，計(jì)算器的電源一般用5號(hào)電池或鈕扣電池。再看鍵，是關(guān)機(jī)鍵，停止使用計(jì)算器時(shí)要按一下這個(gè)鍵，來(lái)切斷計(jì)算器的電源，是清除鍵，按一下這個(gè)鍵，計(jì)算器就清除當(dāng)前顯示的數(shù)與符號(hào)。的功能是完成運(yùn)算或執(zhí)行命令。是運(yùn)算鍵，按一下這個(gè)鍵，計(jì)算器就執(zhí)行加法運(yùn)算。
平行線的性質(zhì)定理和判定定理教案教學(xué)設(shè)計(jì)
1、互逆命題：在兩個(gè)命題中，如果第一個(gè)命題的條件是第二個(gè)命題的 ，而第一個(gè)命題的結(jié)論是第二個(gè)命題的 ，那么這兩個(gè)命題互逆命題，如果把其中一個(gè)命題叫做原命題，那么另一個(gè)命題叫做它的 .2、互逆定理：如果一個(gè)定理的逆命題也是 ，那么這個(gè)逆命題就是原來(lái)定理的逆定理.注意(1)：逆命題、互逆命題不一定是真命題，但逆定理、互逆定理，一定是真命題.(2)：不是所有的定理都有逆定理.自主學(xué)習(xí)診斷：如圖所示：(1)若∠A= ，則AC∥ED，( ).(2)若∠EDB= ，則AC∥ED，( ).(3)若∠A+ =1800，則AB∥FD，( ).(4)若∠A+ =1800，則AC∥ED，( ).
三角形的有關(guān)證明 3 直角三角形教案教學(xué)設(shè)計(jì)
從課程內(nèi)容來(lái)看，本節(jié)課屬于“圖形與幾何”中“圖形的性質(zhì)”部分。依據(jù)課標(biāo)的要求，我從以下四個(gè)方面設(shè)定了課程目標(biāo)，分別是：1。知識(shí)技能：（1）掌握判定直角三角形全等的“斜邊、直角邊”定理。（2）已知一直角邊和斜邊，能用尺規(guī)作出直角三角形。2。數(shù)學(xué)思考：（1）經(jīng)歷探索、猜想、證明的過(guò)程，進(jìn)一步體會(huì)證明的必要性，發(fā)展推理能力和有條理的表達(dá)能力。（2）在探究過(guò)程中，滲透由特殊到一般的數(shù)學(xué)思想方法。3。問(wèn)題解決：能利用直角三角形的全等解決有關(guān)問(wèn)題。4。情感態(tài)度：通過(guò)學(xué)習(xí)，讓學(xué)生感受數(shù)學(xué)證明的嚴(yán)謹(jǐn)性，發(fā)展勇于質(zhì)疑、嚴(yán)謹(jǐn)求實(shí)的科學(xué)態(tài)度。
大班科學(xué)教案：常識(shí)活動(dòng)設(shè)計(jì)：圓形的妙用
1．讓幼兒在認(rèn)識(shí)圓的基礎(chǔ)上，通過(guò)做做、玩玩，讓幼兒知道圓形的物體會(huì)滾動(dòng)。2．知道用輪子能省力。3．發(fā)展幼兒的發(fā)散性思維?！净顒?dòng)準(zhǔn)備】1．室外：(1)裝有圓形輪胎的小三輪車、四輪車、小推車；(2)裝有除圓形以外的各種形狀輪胎的小三輪車、四輪車、小推車。2．室內(nèi)：各種形狀的小積木，幼兒人手一套；裝有書籍的箱子一只，圓形的輪子兩個(gè)，小推車一輛，大積木一塊，每組一只盒子(裝有橡皮泥、硬卡紙、彩色紙、剪刀、牙簽、膠水、蠟筆)?！净顒?dòng)過(guò)程】一、第一次嘗試：滾動(dòng)圓形和其他形狀構(gòu)成的物體在室外供給幼兒裝有圓形輪胎的小三輪車、四輪車、小推車以及裝著除圓形以外的各種形狀輪胎的小三輪車、四輪車、小推車。教師：“這里有許多車子，我們一起來(lái)玩一玩、想一想，哪些車子的輪子會(huì)滾動(dòng)?”二、第二次嘗試：圓形的東西會(huì)滾動(dòng)1．在室內(nèi)供給每位幼兒各種形狀的積木玩。①你們的桌子上有什么形狀的積木?②請(qǐng)你推動(dòng)各種積木，你發(fā)現(xiàn)了什么?③為什么圓形的積木輕輕一推會(huì)滾，而梯形、正方形、長(zhǎng)方形、三角形等的積木不會(huì)滾動(dòng)呢?小結(jié)：圓形的東西會(huì)滾動(dòng)，因?yàn)樗鼪](méi)有角。
人教版新課標(biāo)小學(xué)數(shù)學(xué)五年級(jí)下冊(cè)分?jǐn)?shù)與小數(shù)的互化說(shuō)課稿2篇
三、總結(jié)規(guī)律、形成概念通過(guò)學(xué)生積極討論，充分調(diào)動(dòng)了學(xué)生的積極參與學(xué)習(xí)，既發(fā)揮了學(xué)生學(xué)習(xí)的主動(dòng)性，又培養(yǎng)了學(xué)生的發(fā)散性思維，引導(dǎo)學(xué)生總結(jié)出：有的分?jǐn)?shù)可以化成有限小數(shù)，有的分?jǐn)?shù)不可以化成有限小數(shù)，請(qǐng)同學(xué)們?cè)倏匆豢词裁礃拥姆謹(jǐn)?shù)可以化成有限小數(shù)？什么樣的分?jǐn)?shù)不可以化成有限小數(shù)？啟發(fā)學(xué)生從分母的最小公倍數(shù)著手。 最后總結(jié)出：一個(gè)最簡(jiǎn)分?jǐn)?shù)，如果分母中只含有素因數(shù)2和5，再無(wú)其它素因數(shù)，那么這個(gè)分?jǐn)?shù)就可以化成有限小數(shù)，否則就不能化成有限小數(shù)。 例題2，請(qǐng)把下列小數(shù)化成分?jǐn)?shù)，說(shuō)說(shuō)你是怎樣把小數(shù)化成分?jǐn)?shù)的？ 0.06，0.4，1.8，2.45，1.465, 歸納：（學(xué)生為主，教師點(diǎn)撥）1、原來(lái)有幾位小數(shù)，就在1后面寫幾個(gè)零作分母。原來(lái)的小數(shù)去掉小數(shù)點(diǎn)作分子。2、小數(shù)化成分?jǐn)?shù)后，能約分的要約分。常用的因數(shù)是2和5。 對(duì)于小數(shù)如何化成分?jǐn)?shù)的題目，課前了解到學(xué)生在小學(xué)時(shí)已學(xué)過(guò)把小數(shù)如何化成分?jǐn)?shù)的方法，因而以學(xué)生練習(xí)為主，加以操練并鞏固，有錯(cuò)誤的及時(shí)糾正。
北師大初中八年級(jí)數(shù)學(xué)下冊(cè)多邊形的內(nèi)角和與外角和教案
方法總結(jié)：解題的關(guān)鍵是由題意列出不等式求出這個(gè)少算的內(nèi)角的取值范圍．探究點(diǎn)二：多邊形的外角和定理【類型一】 已知各相等外角的度數(shù)，求多邊形的邊數(shù)正多邊形的一個(gè)外角等于36°，則該多邊形是正()A．八邊形 B．九邊形C．十邊形 D．十一邊形解析：正多邊形的邊數(shù)為360°÷36°＝10，則這個(gè)多邊形是正十邊形．故選C.方法總結(jié)：如果已知正多邊形的一個(gè)外角，求邊數(shù)可直接利用外角和除以這個(gè)角即可．【類型二】 多邊形內(nèi)角和與外角和的綜合運(yùn)用一個(gè)多邊形的內(nèi)角和與外角和的和為540°，則它是()A．五邊形 B．四邊形C．三角形 D．不能確定解析：設(shè)這個(gè)多邊形的邊數(shù)為n，則依題意可得(n－2)×180°＋360°＝540°，解得n＝3，∴這個(gè)多邊形是三角形．故選C.方法總結(jié)：熟練掌握多邊形的內(nèi)角和定理及外角和定理，解題的關(guān)鍵是由已知等量關(guān)系列出方程從而解決問(wèn)題．
北師大初中八年級(jí)數(shù)學(xué)下冊(cè)分式的乘除法教案
通常購(gòu)買同一品種的西瓜時(shí)，西瓜的質(zhì)量越大，花費(fèi)的錢越多，因此人們希望西瓜瓤占整個(gè)西瓜的比例越大越好．假如我們把西瓜都看成球形，并把西瓜瓤的密度看成是均勻的，西瓜的皮厚都是d，已知球的體積公式為V＝43πR3(其中R為球的半徑)，求：(1)西瓜瓤與整個(gè)西瓜的體積各是多少？(2)西瓜瓤與整個(gè)西瓜的體積比是多少？(3)買大西瓜合算還是買小西瓜合算？解析：(1)根據(jù)體積公式求出即可；(2)根據(jù)(1)中的結(jié)果得出即可；(3)求出兩體積的比即可．解：(1)西瓜瓤的體積是43π(R－d)3，整個(gè)西瓜的體積是43πR3；(2)西瓜瓤與整個(gè)西瓜的體積比是43π（R－d）343πR3＝（R－d）3R3；(3)由(2)知，西瓜瓤與整個(gè)西瓜的體積比是（R－d）3R3<1，故買大西瓜比買小西瓜合算．方法總結(jié)：本題能夠根據(jù)球的體積，得到兩個(gè)物體的體積比即為它們的半徑的立方比是解此題的關(guān)鍵．
人教版高中歷史必修2中國(guó)民族資本主義的曲折發(fā)展說(shuō)課稿2篇
2．民族工業(yè)的遭受打擊自主探究4：閱讀【歷史縱橫】和教材插圖，探究抗戰(zhàn)時(shí)期民族走向萎縮的原因有哪些？在淪陷區(qū)日軍的摧毀和吞并；在國(guó)統(tǒng)區(qū)國(guó)民政府強(qiáng)化對(duì)經(jīng)濟(jì)的全面統(tǒng)治；官僚資本壟斷經(jīng)濟(jì)命脈，壓制民族工業(yè)牟取暴利。造成了什么后果？（官僚資本的膨脹，民族資本的萎縮）3、民族工業(yè)的萎縮討論：為什么抗戰(zhàn)勝利了，民族資本主義工業(yè)反而日益萎縮呢？學(xué)生通過(guò)合作學(xué)習(xí)，對(duì)教材提供的資料進(jìn)行認(rèn)真分析，認(rèn)識(shí)到美國(guó)的經(jīng)濟(jì)掠奪、官僚資本的擠壓、通貨膨脹三個(gè)因素的共同作用，使民族工業(yè)陷入絕境，紛紛倒閉?？箲?zhàn)勝利后，國(guó)民政府雖采取了一些措施推動(dòng)國(guó)民經(jīng)濟(jì)的發(fā)展，但是，國(guó)民政府為了取得美國(guó)的援助，不惜出賣國(guó)家主權(quán)，與美國(guó)在1946年簽訂《中美友好通商航海條約》，讓美國(guó)在華攫取政治、經(jīng)濟(jì)等特權(quán)。中國(guó)民族工業(yè)紛紛破產(chǎn)。
人教版高中地理必修2中國(guó)的可持續(xù)發(fā)展實(shí)踐教案
1、在工業(yè)經(jīng)濟(jì)結(jié)構(gòu)調(diào)整中，實(shí)現(xiàn)循環(huán)經(jīng)濟(jì)的基本途徑是清潔生產(chǎn)讓學(xué)生分組課前收集鄉(xiāng)土地理中清潔生產(chǎn)的案例，將小組收集的案例寫成小組作業(yè)。讓兩個(gè)小組到課堂上展示，并畫出流程圖。2、在農(nóng)業(yè)經(jīng)濟(jì)結(jié)構(gòu)調(diào)整中，我國(guó)大力推行生態(tài)農(nóng)業(yè)，以實(shí)現(xiàn)循環(huán)經(jīng)濟(jì)留民營(yíng)村的生態(tài)農(nóng)業(yè)按可持續(xù)發(fā)展的觀點(diǎn)，把保護(hù)生態(tài)環(huán)境和發(fā)展農(nóng)村經(jīng)濟(jì)有機(jī)結(jié)合起來(lái) 主要措施：（1）調(diào)整產(chǎn)業(yè)結(jié)構(gòu)：五業(yè)并舉，全面發(fā)展 各業(yè)之間相互補(bǔ)充、相互促進(jìn)、既保持了平衡，又促進(jìn)了經(jīng)濟(jì)的發(fā)展 （2）開展綜合利用 促進(jìn)了糧食、牲畜生產(chǎn)的發(fā)展，增加了經(jīng)濟(jì)效益，降低了污染，凈化了環(huán)境，有利農(nóng)民健康，還改變了農(nóng)田施肥結(jié)構(gòu)，有效地保護(hù)了土地資源 （3）廣開源流，開發(fā)利用新能源 利用太陽(yáng)能和生物能，節(jié)省了以往購(gòu)煤的開支，還凈化了環(huán)境 意義和發(fā)展方向
人教版高中歷史必修2中國(guó)民族資本主義的曲折發(fā)展教案
①自然經(jīng)濟(jì)的逐步解體；(西方列強(qiáng)的侵略)在給中華民族帶來(lái)沉重災(zāi)難的同時(shí)，也不斷地沖擊著中國(guó)社會(huì)的生產(chǎn)方式和思想觀念，分解著中國(guó)自給自足的封建經(jīng)濟(jì)。客觀為民族工業(yè)的興起和發(fā)展提供了某些條件和可能。②清末至民國(guó)政府鼓勵(lì)興辦實(shí)業(yè)；(歷屆政府的扶植)由于時(shí)代潮流的沖擊和鞏固統(tǒng)治的需要，清末至民國(guó)歷屆政府都鼓勵(lì)興辦實(shí)業(yè)。③反帝愛國(guó)運(yùn)動(dòng)的推動(dòng)。(反帝愛國(guó)運(yùn)動(dòng)的推動(dòng))中國(guó)人民反帝愛國(guó)熱情不斷高漲，使“實(shí)業(yè)救國(guó)”具有日益廣泛的社會(huì)基礎(chǔ)，特別是抵制洋貨、提倡國(guó)貨運(yùn)動(dòng)不斷興起，有力推動(dòng)民族工業(yè)的發(fā)展④實(shí)業(yè)家自強(qiáng)不息的愛國(guó)精神。(實(shí)業(yè)家們自強(qiáng)不息的愛國(guó)精神)是支撐民族工業(yè)曲折發(fā)展的動(dòng)力和力量的源泉。本課小結(jié)：扼要回顧民族工業(yè)的曲折發(fā)展歷程，進(jìn)而啟導(dǎo)學(xué)生探究影響其發(fā)展的因素，最后分析其歷史地位。中國(guó)民族資本主義的發(fā)展在中國(guó)近代史上具有重要的歷史地位，對(duì)近代中國(guó)歷史和社會(huì)的發(fā)展產(chǎn)生了重大影響。
