-
新人教版高中英語選修2Unit 1 Science and Scientists-Discovering useful structures教學設計
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 4 Journey Across a Vast Land教學設計
當孩子們由父母陪同時，他們才被允許進入這個運動場。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，相當于對應的時間、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.盡管被警告了風暴的到來，但農(nóng)民們仍在農(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)．后面跟著兩個學生，老師走進了房間。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-Learning about Language教學設計
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教學設計
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 1 Science and Scientists-Using langauge教學設計
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教學設計
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雨中喪生。(2)before、when、by the time、until、after、once等引導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引導的定語從句中，主語與謂語構成被動關系時，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，且主語與謂語構成被動關系時，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.如果我早一點得到他的指示，我早就完成這項任務了。If I had hurried, I wouldn't have missed the train.如果我快點的話，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 3 Food and Culture-Reading and thinking教學設計
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 5 First Aid-Discovering useful structures教學設計
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形式復合結構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”構成。動詞ing形式的復合結構實際上是給動詞ing形式加了一個邏輯主語。動詞ing形式的復合結構有四種形式：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。
大班科學課件教案：不怕冷的植物
2、學習與同伴一起交流，感受相互交流帶來的樂趣。 ?。刍顒訙蕚洌?、活動前觀察過臘梅花、松樹、自然角種植水仙花等植物在冬天的狀況。2、班級幼兒養(yǎng)植過水仙花3、幼兒美術用書《立體樹》 ［活動過程］ 一、結伴討論1、談話：冬天里，你見到過有哪些植物不怕泠？2、幼兒自由結伴討論。
大班科學課件教案：會飛的風箏
2、感受放風箏的愉快情緒。前期準備: 1、與家人一起放風箏2次（一次有風的時候放，一次沒有風的時候放）并作記錄。2、實物風箏若干活動準備：小記錄卡人手一張、大記錄卡一張、實物風箏若干。活動過程：一、幼兒手持小記錄卡交流自己放風箏的感受1、幼兒介紹自己的記錄卡2、老師根據(jù)幼兒的介紹匯總在大記錄卡上，成功的用紅色筆打∨，失敗的用綠色筆打╳。
大班科學課件教案：好玩的泥鰍
最后科學活動來源于生活，更應回歸與生活。本次活動的延伸也是繼續(xù)探索的起點。所以，我從捉泥鰍的現(xiàn)象中生成防滑活動，讓幼兒理解科學對我們生活的幫助和重要性?！ 』顒幽繕耍?、大膽親近泥鰍，進一步了解泥鰍的主要特征，體驗捉泥鰍的快樂。2、在探究活動中發(fā)現(xiàn)粗糙材料易抓泥鰍的現(xiàn)象，激發(fā)探索身邊科學現(xiàn)象的興趣?！ 』顒訙蕚?、泥鰍、盆、棉手套和塑料手套、青菜葉和甜瓜葉、干毛巾和錦絲布、統(tǒng)計表、筆、字卡（粗糙、光滑）等2、介紹泥鰍生活習性、主要特征及黏液作用的相關錄像。童謠flash《捉泥鰍》 活動過程： 一、欣賞童謠flash《捉泥鰍》（在輕松、愉快的氣氛中，引導幼兒回憶已有的生活經(jīng)驗，生生互動，了解泥鰍的一般特征，同時激發(fā)幼兒探索泥鰍的積極性。） 師：歌曲中的小妹妹為什么那么高興？泥鰍長的是什么樣的？（請個別幼兒講述已知的泥鰍的特征） 二、觀察感受泥鰍，進一步了解泥鰍的外形特征。（提升幼兒經(jīng)驗，解決重點：黏液。1、（出示泥鰍）師：請小朋友仔細看看，泥鰍身上還有那些地方我們沒說到的？它有沒有特別的地方或有趣的事情呢。2、幼兒觀察后講述自己的發(fā)現(xiàn)。（師提醒幼兒講完整的話）3、幼兒徒手嘗試捉泥鰍。1）第一次捉泥鰍 師：讓我們一起去和泥鰍玩玩,看看會有什么有趣的事情發(fā)生?你怎么捉泥鰍的？泥鰍在你手里是怎樣的？
大班科學課件教案：雨的秘密
活動目標1、引導幼兒自己做小實驗，了解“蒸發(fā)”以及“雨是怎樣形成的”等科學現(xiàn)象。2、通過探索“雨”的形成，理解“梅雨季節(jié)”的來歷。3、激發(fā)幼兒發(fā)現(xiàn)問題，并積極探索自然現(xiàn)象的興趣。 活動準備1、酒精燈、燒杯、玻璃片、火柴等實驗工具。2、投影機、故事《小水滴旅行記》、幻燈片、磁帶。
大班科學課件教案：紙的秘密
2、培養(yǎng)幼兒的動手操作能力和比較能力。3、引導幼兒通過摸摸、玩玩，感知紙的特性。 活動準備各種各樣的紙若干，如卡紙、宣紙、繪畫紙、皺紋紙、牛皮紙等。多媒體課件、即時貼、每組一盆水。 活動過程1、帶領幼兒欣賞手工制品，引出活動主題。今天這里舉辦了手工作品展，我們一塊去看看吧。提問：你看到了什么？它們使用什么材料制成的？他們雖然都是紙，讓我們來找找什么地方不一樣？
大班科學課件教案：出生的秘密
教學目的： 1、初步讓小朋友了解人和動物出生，了解胎生和卵生的基本知識。 2、培養(yǎng)小朋友對媽媽的熱愛之情，知道要關心愛護自己的媽媽。 3、萌發(fā)小朋友愛動物的情感，讓小朋友知道動物是我們人類的好朋友，要愛護保護動物。 教學準備： 各種動物的圖片，關于動物出生過程的碟片，各種動物頭飾、碟機、電視機、視頻展臺，幼兒在媽媽肚子里的圖片。 教學過程： 一、開始部分： （小朋友跟著磁帶一起唱《世上只有媽媽好》的歌，引出主題）。 師：小朋友剛才唱的歌真好聽，小朋友都喜不喜歡自己的媽媽？（喜歡） 師：我們每個人都有媽媽，我們都是在媽媽的肚子里慢慢長大，然后媽媽把我們生出來，我們就成了一個小寶寶。我們一起來看一看我們在媽媽的肚子里是怎樣長大的。（通過視頻展臺出示圖片，請小朋友看，引發(fā)小朋友的興趣） 二、基本部分： 師：小朋友剛才看了我們在媽媽肚子里的成長過程，知道我們是怎樣出生的，有誰知道小動物是怎樣出生的呢？（幼兒發(fā)言） 師：今天周老師帶來了一盤好看的碟子，請小朋友看一看，看的時候，要認真記住看到了什么，看見了誰，等會講給大家聽。 （放碟子請小朋友看一看馬的生出過程和鱷魚的生出過程，通過小朋友的觀察，請小朋友回答問題，引出胎生和卵生的概念） 師：剛才小朋友看了電視里面有誰出生了？（小馬和鱷魚） 師：小馬是怎樣出生的？（小馬是直接從媽媽肚子里生出來的） 師：鱷魚是怎樣出生的？（鱷魚是媽媽先生出鱷魚蛋，然后孵化出小鱷魚） 師：周老師再請小朋友看一看小馬是怎樣出生的，小馬是直接從媽媽的肚子里出來的，看馬媽媽流了好多好多的血，馬媽媽的肚子真疼呀，生出來了，終于生出來了。周老師告訴你們象小馬一樣的直接從媽媽的肚子里生出來，吃媽媽乳汁長大的，叫胎生，我們人也是胎生的，請小朋友想一想還有哪些動物是胎生的？ 師：小朋友說的真好！我們再來看一遍鱷魚是怎樣出生的？看有一個蛋，蛋破了，小鱷魚爬出來了，原來小鱷魚是從蛋里孵出來的，又有一只小鱷魚出生了。周老師告訴小朋友，象鱷魚一樣，是媽媽先產(chǎn)卵，然后再把小動物從卵里孵化出來的，叫卵生。小朋友想一想，哪些動物是卵生的？ 師：小朋友剛才說了許多卵生和胎生的動物，我再請小朋友看一看圖片，說一說，哪些動物是卵生的，哪些動物是胎生的。（通過視頻展臺給小朋友出示更多的動物孵化和從媽媽肚子里出生的圖片） 三、結束部分： 師：小朋友今天又學到了一個新本領，知道了小動物出生的秘密，認識了胎生和卵生。 師：周老師要帶小朋友玩一個找家的游戲，周老師給小朋友準備了許多頭飾，每人找一找，還想一想，它是胎生的，還是卵生的，周老師扮演地球公公。（帶領幼兒到戶外玩游戲） （念兒歌：地球，地球真是大，地球上面住娃娃，娃娃娃娃真可愛，有的娃娃是胎生，有的娃娃是卵生，娃娃快快找到自己的家。兒歌念完趕快找到自己的家，游戲玩兩遍）
大班科學課件教案：會唱歌的車
活動準備：1、幼兒對消防車、灑水車、救護車等特殊車輛有初步的認識。2、制作多媒體課件。3、收集各種特殊車輛的玩具。 活動過程：一、辨聽車的聲音，引出特殊車輛1、聽聽是什么聲音？（喇叭聲） 今天開來了許多不同的汽車，你們想認識嗎？2、那我們就做一個聽聲音猜汽車的游戲。猜對了，汽車會開來的;猜錯了就沒有汽車，想玩嗎？聽仔細了……3、聽聲音猜汽車。幼兒猜對了，出示車輛。
大班科學課件教案：各種各樣的傘
活動目標1、激發(fā)幼兒對生活現(xiàn)象的好奇心。2、通過實驗初步感知不同布的吸水性不同。3、發(fā)展幼兒的觀察力和實驗操作能力。 活動準備 各種質地的布塊若干（棉布、紗布、絨布、尼龍布、麻布、塑料布等）及眼藥水瓶若干。 過程建議1、幼兒猜猜：換別的布做傘面，行不行？2、幼兒分組觀察各種布的區(qū)別。引導幼兒用眼睛看（顏色），用手摸一摸（厚薄、軟硬、粗細），使勁拉一拉，聽聽它們會發(fā)出什么樣的聲音。請幼兒說一說自己都觀察到了什么，有什么想法。
大班科學課件教案：旋轉的紙片
活動目標1、探究、發(fā)現(xiàn)各種形狀的紙片在快速轉動時都會呈現(xiàn)出圓形。2、在討論、記錄、交流中積累和提升有關轉動的經(jīng)驗。3、樂意針對問題作進一步的探究，體驗愉快的情緒和探究的樂趣。 活動準備1、圓形、橢圓形、三角形、正方形的紙片(中心有小孔)、可制作陀螺的塑料小棒、蠟筆等各若干。2、實物投影儀。3、猜測記錄表人手一張。 活動過程一、導入活動，激發(fā)探究興趣1．投影展示各種圖形，幼兒觀察講述都有哪些圖形和我們玩轉陀螺的游戲。2．請幼兒結合自己的生活經(jīng)驗，說說什么形狀的紙片比較適合做陀螺。 二、在做做、玩玩中發(fā)現(xiàn)圓形的紙片在轉動時也是圓形的1、提出制作與觀察的要求：先選一張圓形的紙片把它做成陀螺玩一玩，看看它轉動起來是怎樣的。2、幼兒制作、玩耍陀螺，引導幼兒觀察陀螺轉動起來是怎樣的。 3、請幼兒說一說陀螺轉動起來是怎樣的。幼A：我的陀螺轉動起來是歪歪斜斜、搖搖擺擺的。幼B：我的陀螺先是慢慢的，后來越轉越快，最后就停下來了。幼C：我的圓形陀螺轉起來也是圓形的。幼D：陀螺轉動起來它的形狀有點模糊。(評：在這里，教師因勢利導，讓幼兒根據(jù)自己的經(jīng)驗先選圓形的紙片制作陀螺，這樣既有利于幼兒習得制作陀螺的方法，也有利于引導幼兒更多地關注陀螺在轉動時發(fā)生的一系列變化，為下面的環(huán)節(jié)作好鋪墊。) 三、在猜猜、試試、說說中發(fā)現(xiàn)不同形狀的紙片在快速轉動時都呈現(xiàn)出圓形1、出示記錄表，介紹記錄方法：“問號”表示想一想，“小手”表示試一試。把我們的猜想畫在問號下面，等一會兒把嘗試后的結果畫在小手下面。2、讓幼兒猜一猜三角形、橢園形、正方形的紙片轉動起來是什么形狀的，并把自己的猜想記錄在表格中。 3、個別介紹自己的猜想。幼A：三角形轉動起來是三角形、橢圓形轉動起來是橢圓形、正方形轉動起來是正方形，不會變的。幼B：它們轉動起來都會變成圓形。幼C：轉動起來會變成花形。幼D：正方形會變成圓形，三角形還是三角形．(評：“猜測與假設”有助于激活幼兒的思維。動手前先動腦，幼兒的思維會處于一種激活狀態(tài)+這無疑對發(fā)展幼兒的思維能力起到了重要作用。在這里，我對幼兒的任何猜測都不作評價，而是留待他們在接下來的環(huán)節(jié)中，通過自己的操作來發(fā)現(xiàn)與驗證。)4、實驗驗證并記錄結果。引導幼兒仔細觀察不同形狀的紙片在快速轉動時是什么形狀的，并把實驗結果記錄在表格中。
大班科學課件教案：滾動的輪子
活動要求：l、區(qū)分能滾與不能滾的物體，比較其異同，知道球體能向各個方向滾動，輪子能向兩面滾動。2、通過嘗試活動，初步培養(yǎng)幼兒自己發(fā)現(xiàn)問題，解詼問題的能力。 活動準備：l、圓球，瓶子，輪子娃娃各一個；一輛沒有輪子的汽車。2、收集各種大小紙盒、積木、球、飲料瓶，輪子狀的物品及各種玩具車。3、準備三條l—2米左右長的路。 活動過程：一、什么會滾，什么不會滾？1、出示兩輛車（一輛有輪子，一輛沒有輪子）通過比較，知道輪子可以滾動。①教師以小象笨笨的口吻引出課題。師：“我是小象笨笨，城里的朋友給我送來了一輛汽車，可是我不知道怎樣讓車動起來，誰能幫助我？”②出示沒輪子的汽車，讓幼兒說一說為什么不會動？③教師給汽車裝上方形的輪子，讓幼兒觀察，為什么汽車還是不會動。幼：（方的東西不能浪，圓的東西能滾。）④通過比較，讓幼兒知道什么才是滾？（連續(xù)著向前旋轉叫做“滾”）2、自由玩紙盒、積木；輪子等物，引導幼兒將物品分成“會滾”與“不會滾”兩堆。師：我有一堆東西，可是我不知道哪些東西會滾，哪些東西不會滾，你們去試一試，然后把不會滾的放到（滾）這個框里，把會滾的放到（滾）那個框中。（幼兒動手操作）
大班科學課件教案：神奇的橋
2、培養(yǎng)幼兒的發(fā)散性思維和動手構建能力。 3、激發(fā)幼兒對科學活動的興趣。 活動準備： 1、常見橋梁圖片兩幅。 2、從網(wǎng)上下載的各種不同橋梁圖片資料若干，電腦一臺。 3、積木（每組兩籃），作業(yè)紙每人一張。每人從家?guī)淼男〖埡袃蓚€。 活動過程： 1、出示圖片，引出關于橋梁的課題，了解幾種常見橋梁的類型。（斜拉橋、拱橋、立交橋）
大班科學課件教案：奇妙的蛋殼
活動準備： 蛋殼、透明膠、粗吸管、鉛筆若干；桌面教具；網(wǎng)上下載有關拱形建筑物的圖片若干；長條卡紙（反面用雙面膠貼好）、小積木若干…… 活動過程： 一、導入活動：通過小雞出殼的故事，引出問題讓幼兒討論：“到底是雞姐姐從外面啄破了蛋殼？還是雞妹妹從里面啄破了蛋殼？”幼兒猜想并記錄 二、幼兒通過動手實驗來感受受蛋殼凸凹兩面所承受力的差異。1、引導幼兒想象，用筆尖代替小雞嘴，用吸管統(tǒng)一高度，保證每次用力大小一樣。2、幼兒每人拿幾個蛋殼，用筆尖代替小雞嘴在蛋殼凸凹兩面進行實驗，并將實驗結果記錄下來。3、集體記錄。4、小結： 師：“是誰啄破了蛋殼？”“蛋殼是從外面啄破的還是從里面啄破的？為什么從外面啄不容易破呢？”“下面我們來看看蛋殼是什么樣的？”（是拱形的、半圓形的、……）“告訴大家一個秘密：原來拱形的物體表面都能承受很大的力，不信，我們用這張小紙條來做個實驗就知道了?！?/p>