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學(xué)校選修課走班管理制度

  • 委托物業(yè)管理合同

    委托物業(yè)管理合同

    為加強(qiáng) 小區(qū)(大廈)的物業(yè)管理,保障房屋和公用設(shè)施的正常使用,為業(yè)主創(chuàng)造優(yōu)美、整潔、安全、方便、舒適、文明的居住環(huán)境,根據(jù) 市物業(yè)管理方面的法規(guī)和政策,經(jīng)雙方友好協(xié)商,達(dá)成如下協(xié)議,以便共同遵守。第一條 物業(yè)管理內(nèi)容1.甲方將位于 區(qū) 路的 范圍內(nèi)的物業(yè)委托給乙方實行統(tǒng)一管理,綜合服務(wù)。2.管理事項包括:(1)房屋的使用、維修、養(yǎng)護(hù);(2)物業(yè)范圍的公用設(shè)施、設(shè)備及場所(地)(消防、電梯、機(jī)電設(shè)備、路燈、走廊、自行車、房、棚、園林綠化地、溝、渠、池、井、道路、停車場等)的使用、維修、養(yǎng)護(hù)和管理;(3)清潔衛(wèi)生(不含垃圾運(yùn)到中轉(zhuǎn)站后的工作);(4)公共生活秩序;(5)文娛活動場所;(6)便民服務(wù)網(wǎng)點(diǎn)及物業(yè)范圍內(nèi)所有營業(yè)場所;(7)車輛行使及停泊;(8)物業(yè)檔案管理;(9)授權(quán)由物業(yè)管理公司管理的其他事項。第二條 委托物業(yè)管理形式承包經(jīng)營、自負(fù)盈虧。第三條 物業(yè)管理期限委托管理期限為 年,自 年 月 日起到 年 月 日止。

  • 物業(yè)管理服務(wù)合同

    物業(yè)管理服務(wù)合同

    第十四條 業(yè)主和物業(yè)使用人房屋自用部位、自用設(shè)備及設(shè)備的維修、養(yǎng)護(hù),在當(dāng)事人提出委托時,乙方須接受委托并合理收費(fèi)。第十五條 對業(yè)主牧業(yè)使用人違反《業(yè)主公約》的行為,針對具體行為并根據(jù)情節(jié)輕重,采取批評、規(guī)勸、警告、制止、 等措施。第十六條 其他委托事項第三章 委托管理期限第十七條 委托管理期限為 年。自 年 月 日 時起至 年 月 日 時止。第四章 雙方權(quán)利義務(wù)第十八條 甲方權(quán)利義務(wù)1、 代表和維護(hù)產(chǎn)權(quán)人、使用人的合法權(quán)益;2、 制定《業(yè)主公約》并監(jiān)督業(yè)主和物業(yè)使用人遵守公約;3、 審定乙方制定的物業(yè)管理方案;4、 檢查監(jiān)督乙方管理工作的執(zhí)行情況;5、 審議乙方年度管理計劃、資金使用計劃及決算報告;6、 在合同生效之日起 日內(nèi)向乙方提供 平方米建筑面積管理用房(產(chǎn)權(quán)仍屬甲方),由乙方按下列第 項執(zhí)行;(1) 無償使用;(2) 按建筑面積每月每平方米 元租用,其租金收入用于 。7. 負(fù)責(zé)歸集物業(yè)管理所需全部圖紙、檔案、資料,并于合同生效之日起 日內(nèi)向乙方提供;8. 當(dāng)業(yè)主和物業(yè)使用人不按規(guī)定交納牧業(yè)管理費(fèi)時,負(fù)責(zé)催交或以 方式償付;9. 協(xié)調(diào)、處理本合同生效前發(fā)生的管理遺留問題;

  • 中班健康:情緒溫度計課件教案

    中班健康:情緒溫度計課件教案

    2.懂得保持良好的情緒對身體的好處?;顒訙?zhǔn)備:1.氣溫溫度計一個2.臉譜圖:興奮、高興、傷心。3.可調(diào)式情緒溫度計若干。4.磁帶:《快樂舞》、《小熊的葬禮》音樂活動過程:1.提問:“氣溫的變化用什么表示?”教師出示氣溫溫度計,讓幼兒知道氣溫的變化可以用溫度計來表示。2.認(rèn)識情緒,知道人的情緒也會變化。(1)請幼兒分別欣賞《快樂舞》和《小熊的葬禮》的音樂,感受自己的情緒的變化。(2)出示不同的情緒臉譜并認(rèn)識:興奮、高興、傷心,讓幼兒說說自己有沒有過這樣的情緒。(3)認(rèn)識情緒溫度計:知道情緒同氣溫一樣會變化,可以用情緒溫度計來記錄自己的情緒。

  • 中班美術(shù):制作手套課件教案

    中班美術(shù):制作手套課件教案

    2、能掌握正確使用剪刀的方法。3、能大膽地設(shè)計手套的圖案,體現(xiàn)出圖案帶來的美感。準(zhǔn)備:1、每人一張白色的信封。2、用信封制作出的手套幾幅。3、油畫棒、小剪刀每人一套。過程:1、引導(dǎo)制作手套的興趣。(1)做手指游戲。(小朋友們大家好,我們來做一個手指游戲,請小朋友和老師一樣伸出你的小手,和老師一起做.大拇指是爸爸,爸爸開汽車,嘀嘀嘀。爸爸旁邊是媽媽,媽媽洗衣服,嘩嘩嘩。個子最高是哥哥,哥哥打籃球,嘭嘭嘭。哥哥旁邊是姐姐,姐姐在跳舞,啦啦啦。小小手指就是我,我在敲鑼鼓,咚咚咚,鏘鏘鏘, ,咚咚咚,鏘鏘鏘, ,咚鏘、咚鏘、咚咚鏘。

  • 新人教版高中英語選修2Unit 1 Science and Scientists-Discovering useful structures教學(xué)設(shè)計

    新人教版高中英語選修2Unit 1 Science and Scientists-Discovering useful structures教學(xué)設(shè)計

    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。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

  • 新人教版高中英語選修2Unit 1 Science and Scientists-Learning about Language教學(xué)設(shè)計

    新人教版高中英語選修2Unit 1 Science and Scientists-Learning about Language教學(xué)設(shè)計

    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

  • 新人教版高中英語選修2Unit 1 Science and Scientists-Reading and thinking教學(xué)設(shè)計

    新人教版高中英語選修2Unit 1 Science and Scientists-Reading and thinking教學(xué)設(shè)計

    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

  • 新人教版高中英語選修2Unit 2 Bridging Cultures-Discovering useful structures教學(xué)設(shè)計

    新人教版高中英語選修2Unit 2 Bridging Cultures-Discovering useful structures教學(xué)設(shè)計

    The grammar of this unit is designed to review noun clauses. Sentences that use nouns in a sentence are called noun clauses. Nominal clauses can act as subject, object, predicate, appositive and other components in compound sentences. According to the above-mentioned different grammatical functions, nominal clauses are divided into subject clause, object clause, predicate clause and appositive clause. In this unit, we will review the three kinds of nominal clauses. Appositive clauses are not required to be mastered in the optional compulsory stage, so they are not involved.1. Guide the students to judge the compound sentences and determine the composition of the clauses in the sentence.2. Instruct students to try to learn grammar by generalizing grammar rules, controlling written practice, and semi-open oral output.3. Inspire the students to systematize the function and usage of noun clause1.Instruct students to try to learn grammar by generalizing grammar rules, controlling written practice, and semi-open oral output.2.Inspire the students to systematize the function and usage of noun clauseStep1: The teacher ask studetns to find out more nominal clauses from the reading passage and udnerline the nominal clauses.

  • 新人教版高中英語選修2Unit 3 Food and Culture-Reading and thinking教學(xué)設(shè)計

    新人教版高中英語選修2Unit 3 Food and Culture-Reading and thinking教學(xué)設(shè)計

    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.

  • 新人教版高中英語選修2Unit 4 Journey Across a Vast Land教學(xué)設(shè)計

    新人教版高中英語選修2Unit 4 Journey Across a Vast Land教學(xué)設(shè)計

    當(dāng)孩子們由父母陪同時,他們才被允許進(jìn)入這個運(yùn)動場。3.過去分詞(短語)作狀語時的幾種特殊情況(1)過去分詞(短語)在句中作時間、條件、原因、讓步狀語時,相當(dāng)于對應(yīng)的時間、條件、原因及讓步狀語從句。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,整個城市看起來更美了。Given ten more minutes (=If we are given ten more minutes), we will finish the work perfectly.如果多給十分鐘,我們會完美地完成這項工作。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,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,但農(nóng)民們?nèi)栽谵r(nóng)場干活。(2)過去分詞(短語)在句中作伴隨、方式等狀語時,可改為句子的并列謂語或改為并列分句。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).他由母親陪著度過了一整個下午。

  • 新人教版高中英語選修2Unit 1 Science and Scientists-Using langauge教學(xué)設(shè)計

    新人教版高中英語選修2Unit 1 Science and Scientists-Using langauge教學(xué)設(shè)計

    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!

  • 新人教版高中英語選修2Unit 3 Food and Culture-Discovering useful structures教學(xué)設(shè)計

    新人教版高中英語選修2Unit 3 Food and Culture-Discovering useful structures教學(xué)設(shè)計

    The newspaper reported more than 100 people had been killed in the thunderstorm.報紙報道說有一百多人在暴風(fēng)雨中喪生。(2)before、when、by the time、until、after、once等引導(dǎo)的時間狀語從句的謂語是一般過去時,以及by、before后面接過去的時間時,主句動作發(fā)生在從句的動作或過去的時間之前且表示被動時,要用過去完成時的被動語態(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)的定語從句中,主語與謂語構(gòu)成被動關(guān)系時,要用過去完成時的被動語態(tài)。It was the first time that I had seen the night fact to face in one and a half years. 這是我一年半以來第一次親眼目睹夜晚的景色。(4)在虛擬語氣中,條件句表示與過去事實相反,且主語與謂語構(gòu)成被動關(guān)系時,要用過去完成時的被動語態(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,我就不會誤了火車。If you had been at the party, you would have met him. 如果你去了晚會,你就會見到他的。

  • 新人教版高中英語選修2Unit 5 First Aid-Discovering useful structures教學(xué)設(shè)計

    新人教版高中英語選修2Unit 5 First Aid-Discovering useful structures教學(xué)設(shè)計

    You have no excuse for not going.你沒有理由不去。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詞­ing,即“sb./sb.'s+doing”構(gòu)成。動詞­ing形式的復(fù)合結(jié)構(gòu)實際上是給動詞­ing形式加了一個邏輯主語。動詞­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+動詞­ing②名詞所有格+動詞­ing③代詞賓格+動詞­ing④名詞+動詞­ingHer coming to help encouraged all of us.她來幫忙鼓舞了我們所有人。The baby was made awake by the door suddenly shutting.這個嬰兒被突然的關(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?無生命名詞無論是作主語還是作賓語都不能用第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.很抱歉我沒能按時來。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給我們舉辦一場演唱會。

  • 人教版高中生物必修2DNA的復(fù)制說課稿

    人教版高中生物必修2DNA的復(fù)制說課稿

    設(shè)問:DNA復(fù)制后兩個子代DNA分子與親代DNA分子是否完全相同?為什么?通過設(shè)問,讓學(xué)生進(jìn)一步理解和鞏固DNA復(fù)制的全過程。接下來讓學(xué)生總結(jié)出DNA復(fù)制的四大基本條件:① 模板:開始解旋的DNA分子的兩條單鏈;② 原料:是游離在核液中的脫氧核苷酸;③ 能量:是通過水解ATP提供;④ 酶:酶是指一個酶系統(tǒng),不僅僅是指一種解旋酶。最后通過以上分析,總結(jié)出DNA復(fù)制的意義以及在生活中的應(yīng)用:意義:DNA通過復(fù)制,使遺傳信息從親代傳給子代,從而保證了物種的相對穩(wěn)定性,保持了遺傳信息的連續(xù)性,使物種得以延續(xù)。應(yīng)用:目前DNA分子廣泛應(yīng)用于刑事案件偵破等方面:如:DNA分子是親子鑒定的主要證據(jù)之一。把案犯在現(xiàn)場留下的毛發(fā)、血等進(jìn)行分析作為破案的證據(jù),與DNA有關(guān)。五、設(shè)計課堂練習(xí):設(shè)計一題典型課堂練習(xí):即有關(guān)半保留復(fù)制及計算的習(xí)題:

  • 人教版新課標(biāo)高中物理必修2萬有引力理論的成就說課稿2篇

    人教版新課標(biāo)高中物理必修2萬有引力理論的成就說課稿2篇

    2、計算天體的質(zhì)量首先觀看多媒體展示天體的運(yùn)動,同時解釋什么是環(huán)繞天體?什么是中心天體?接著展示相關(guān)問題:①應(yīng)用萬有引力定律求解天體質(zhì)量的基本思路是什么?②求解天體質(zhì)量的方程依據(jù)是什么?教師點(diǎn)撥,學(xué)生分組,合作探究,學(xué)生代表發(fā)言設(shè)計說明通過創(chuàng)設(shè)問題情境,進(jìn)行由淺至深,由易到難的問題式教學(xué),以激發(fā)學(xué)生的積極思維活動;通過探究讓學(xué)生建立物理模型,分組討論,求解中心天體質(zhì)量的三種表達(dá)式。在進(jìn)行已有知識的遷移時重點(diǎn)重復(fù)環(huán)繞和被繞的關(guān)系,使學(xué)生準(zhǔn)確抓住模型中的各個星體所擔(dān)任的角色。通過小組合作學(xué)習(xí),運(yùn)用類比歸納法得出正確結(jié)論,掌握求解中心天體質(zhì)量的基本思路,以達(dá)到突出教學(xué)重點(diǎn)的目的。3、發(fā)現(xiàn)未知天體通過2個視頻進(jìn)行了解設(shè)計說明這部分通過視頻主要激發(fā)學(xué)生相信科學(xué),學(xué)習(xí)科學(xué),讓學(xué)生感知人類探索宇宙的夢想,激發(fā)學(xué)生探索科學(xué)奧秘的熱情,培養(yǎng)熱愛科學(xué)的情感,促使學(xué)生樹立獻(xiàn)身科學(xué)的人生價值觀。

  • 人教版新課標(biāo)高中物理必修2動能和動能定理說課稿3篇

    人教版新課標(biāo)高中物理必修2動能和動能定理說課稿3篇

    2、教學(xué)目標(biāo)根據(jù)我對教材的理解、結(jié)合學(xué)生的實際情況、滲透新課程的教學(xué)理念,為提高全體學(xué)生的科學(xué)素養(yǎng),按課程標(biāo)準(zhǔn),以促進(jìn)全體學(xué)生發(fā)展為目的。從知識與技能、過程與方法,情感態(tài)度與價值觀三個方向培養(yǎng)學(xué)生,擬定三個教學(xué)目標(biāo):知識與技能:(1)知道什么是動能。(2)正確理解和運(yùn)用動能公式分析、解答有關(guān)問題。(3)掌握外力對物體所做的總功的計算,理解“代數(shù)和”的含義。(4)理解和運(yùn)用動能定理。過程與方法:通過演繹推理過程,培養(yǎng)科學(xué)研究興趣,領(lǐng)略物理學(xué)中所蘊(yùn)含的嚴(yán)謹(jǐn)?shù)倪壿嬯P(guān)系。情感、態(tài)度、價值觀:通過運(yùn)用動能定理分析解決問題,感受成功的喜悅,培養(yǎng)學(xué)生對科學(xué)研究的興趣。3、教學(xué)的重點(diǎn)和難點(diǎn)重點(diǎn):理解動能定理、應(yīng)用動能定理解決力學(xué)問題。難點(diǎn):應(yīng)用動能定理解決多個過程的力學(xué)問題,以及變力做功或曲線運(yùn)動中的動能定理運(yùn)用。

  • 人教版高中地理選修1第三章第一節(jié)地球的早期演化和地質(zhì)年代教案

    人教版高中地理選修1第三章第一節(jié)地球的早期演化和地質(zhì)年代教案

    地質(zhì)年代可分為相對年代和絕 對年齡(或同位素年齡)兩種。相對地質(zhì)年代是指巖石和地層之間的相對新老關(guān)系和它們的時代順序。地質(zhì)學(xué)家和古生物學(xué)家根據(jù)地層自然形成的先后順序,將地層分為5代12紀(jì)。即早期的太古代和元古代(元古代 在中國含有1個震旦紀(jì)),以后的古生代、中生代和新生代。古生代分為寒武紀(jì)、奧陶紀(jì)、志留紀(jì)、泥盆紀(jì)、石炭紀(jì)和二疊紀(jì),共7個紀(jì);中生代分為三疊紀(jì)、侏羅紀(jì)和白堊紀(jì),共3個紀(jì);新生代只有第三紀(jì)、第四紀(jì)兩個紀(jì)。在各個不同時期的地層里,大都保存有古代動、植物的標(biāo)準(zhǔn)化石。各類動、植物化石出現(xiàn)的早晚是有一定順序的,越是低等的,出現(xiàn)得越早,越是高等的,出現(xiàn)得越晚。絕對年齡是根據(jù)測出巖石中某種放射性元素及其蛻變產(chǎn)物的含量而計算出巖石的生成后距今的實際年 數(shù)。越是老的巖石,地層距今的年數(shù)越長。

  • 人教版高中地理選修2三峽工程對生態(tài)環(huán)境和名勝古跡的影響及對策教案

    人教版高中地理選修2三峽工程對生態(tài)環(huán)境和名勝古跡的影響及對策教案

    一、三峽工程的生態(tài)環(huán)境效應(yīng)三峽工程的生態(tài)環(huán)境效應(yīng)是指建設(shè)三峽工程對生態(tài)與環(huán)境的有利和不利影響。1、有利影響(1)防洪:(2)防治血吸蟲?。海?)減輕洞庭湖淤積(4)增加枯水期流量,改善水(5)調(diào)節(jié)局部氣候:(6)減輕環(huán)境污染:綜上所述,三峽工程對生態(tài)環(huán)境的有利影響主要在中下游。2、不利影響及措施(1)淹沒土地、耕地:水庫蓄水將淹沒土地、耕地。(2)加劇水土流失和環(huán)境污染:在移民開發(fā)和城市遷建過程中,處理不當(dāng)可能產(chǎn)生新的水土流失和環(huán)境污染等問題。(3)誘發(fā)地質(zhì)災(zāi)害(地震、滑坡):水庫蓄水改變了原有地應(yīng)力的平衡,可能誘發(fā)地震,并使庫岸發(fā)生滑坡等地質(zhì)災(zāi)害的可能性增大。(4)加重泥沙淤積:水庫蓄水,使庫區(qū)水流速度變慢,庫區(qū)和庫尾的泥沙淤積加重。

  • 人教版高中地理選修3第一章第二節(jié)現(xiàn)代旅游對區(qū)域發(fā)展的意義教案

    人教版高中地理選修3第一章第二節(jié)現(xiàn)代旅游對區(qū)域發(fā)展的意義教案

    三、影響區(qū)域環(huán)境說明:環(huán)境是旅游業(yè)的基礎(chǔ),旅游對環(huán)境保護(hù)具有促進(jìn)作用。世界上很多國家在發(fā)展旅游業(yè)的同時,都很重視對旅游資源和環(huán)境的保護(hù),以實現(xiàn)旅游業(yè)的可持續(xù)發(fā)展。旅游業(yè)的發(fā)展對環(huán)境也有消極作用,如果旅游與環(huán)境的關(guān)系不處理好,環(huán)境也會朝著惡化的方向發(fā)展。圖1.10古建修復(fù)圖1.10對比顯示古建筑修復(fù)前后景觀的變化,說明旅游業(yè)的發(fā)展有利于文物古跡和古建筑的保護(hù)。討論:1.列舉旅游業(yè)發(fā)展有利于環(huán)境的措施。提示:建立各種自然保護(hù)區(qū)、申報歷史文物保護(hù)單位等措施都有利于保護(hù)旅游環(huán)境。2.舉例說明旅游對環(huán)境的消極作用。提示:旅游對環(huán)境的消極作用主要表現(xiàn)在:由于對旅游資源開發(fā)建設(shè)不當(dāng)或失誤,使生態(tài)環(huán)境惡化;由于大量游客的涌入,排放的各類廢棄物超過了環(huán)境自凈能力而造成環(huán)境污染;由于大量游客的接觸或不文明行為引起的對風(fēng)景、文物的破壞等。

  • 人教版高中政治必修4價值判斷和價值選擇說課稿(一)

    人教版高中政治必修4價值判斷和價值選擇說課稿(一)

    2.講授新課:(約35分鐘)結(jié)合教材內(nèi)容重難點(diǎn)和學(xué)生實際,在講課過程中,我對教材內(nèi)容的順序進(jìn)行了重組,把教材內(nèi)容由原來的兩大部分劃分為三大部分(第一,價值判斷和價值選擇的含義和關(guān)系;第二,價值判斷和價值選擇的特征;第三,做出正確的價值判斷和價值選擇的標(biāo)準(zhǔn))。這一調(diào)整更符合學(xué)生的認(rèn)知結(jié)構(gòu),便于從整體上把握課本內(nèi)容。在講授過程中,我充分利用課本素材——探究活動為課堂教學(xué)服務(wù),此外,利用學(xué)生的生活與體驗,挖掘?qū)嵗?,如結(jié)婚要禮由以前的舊三件到現(xiàn)如今的轉(zhuǎn)變,引導(dǎo)學(xué)生理解價值判斷和價值選擇的社會歷史性特征,以以《觀祈雨》、以醫(yī)生、藝術(shù)家、老學(xué)究對于《斷臂的維納斯》這個雕塑的不同見解、以新鮮實例韓國沉船事件和范跑跑為例啟發(fā)學(xué)生價值判斷和價值選擇具有主體差異性特征以此突破難點(diǎn),最后通過設(shè)疑、對比、追問正確的價值判斷和價值選擇的標(biāo)準(zhǔn)來深化主題,突出重點(diǎn)。3.課堂小結(jié):(約2分鐘)強(qiáng)化認(rèn)識

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