5.游戲活動:每人從信封袋中挑選一個自己最喜歡的分數(shù)卡片。(1)最簡分數(shù)上講臺,和最簡分數(shù)相同的分數(shù)起立。聯(lián)系生活實際發(fā)散性思考。(2)從剩下的同學中找到自己的好朋友。幫最后兩名同學找最簡分數(shù)作朋友。判斷并說明理由。按要求參加活動,綜合考核學生判斷最簡分數(shù)和對分數(shù)進行約分的能力。創(chuàng)設(shè)生活情景,提供了一些現(xiàn)實的學習材料,把書本知識與學生的日常生活聯(lián)系起來,使學生感受到數(shù)學來自生活,并不抽象;學好數(shù)學,為生活、生產(chǎn)服務(wù),學數(shù)學真有價值。部分題目設(shè)計充滿趣味性,把孩子拉入游戲之中,鞏固本課的所有知識點。在引導(dǎo)學生積極觀察、思考、聯(lián)想、誘發(fā)學生的創(chuàng)新因素時,更應(yīng)注意引導(dǎo)學生克服固定的思維模式,鼓勵創(chuàng)造性地發(fā)現(xiàn)知識的規(guī)律和發(fā)表自己的獨特見解。
正方體的體積=棱長×棱長×棱長用字母a表示棱長,V=a×a×a.也可以寫成a3讀作a的立方.表示3個a相乘.不要誤認為a與3相乘。寫a3時3寫在a的右上角要寫小些.所以正方體的體積公式一般寫成: V=a3(五)、鞏固練習、運用公式練習是數(shù)學中教學鞏固新知、形成技能、發(fā)展思維、提高學生分析問題、解決問題能力的有效手段,為了加強學生的理解,使學生能正確運用公式.我設(shè)計了多層次的練習。1、通過讓學生完成看圖求體積,這樣有助于學生理解長方體正方體的體積與它的長寬高的關(guān)系,記住長方體的體積計算公式.2、我對安排了四個判斷題,以加深學生對a的立方的理解和運用。3,解決實際問題,我安排了兩道題目的是讓學生所學新知識解決生活中的一些實際問題。
準備: 1、紅、黃帽子各12頂,圍巾長短各12條。 2、小貓、小狗、小鴨、小羊頭飾各1個,帶上帽子圍上圍巾的4種動物各1個。 3、男、女、紅帽、黃帽,長圍巾、短圍巾標志各1個;紅帽-長圍,紅帽-短圍,黃帽-長圍,黃帽-短圍的小圖片各1張。1,2,3,4數(shù)字各1個,籃子4個過程: 一、幼兒自選帽子圍巾帶上 師:今天天氣真冷,這里有些帽子、圍巾,小朋友可以自己找一頂帽子帶上,找一塊圍巾圍上,帶以前請小朋友先看一下,你帶的是什么顏色的帽子,圍的是長圍巾還是短圍巾。二、按物體的特征分類: 1.按物體的某一特征分類: 師:哈,帶上帽子,圍上圍巾,可真暖和。小貓、小狗、小鴨、小羊也都來了,他們也想和我們一起去公園玩呢?。ǔ鍪拘」奉^飾)小狗說:我們要去公園,得先分一下,哪些小朋友坐1號車,哪些小朋友坐2號車。(出示男孩、女孩頭飾)那就請男孩子坐1號車,女孩子坐2號車。(幼兒分好后,小狗檢查有沒有坐對)小雞說,不行不行,我不喜歡這樣分,我看還是紅帽子小朋友坐1號車,黃帽子小朋友坐2號車(幼兒分好后,小雞檢查有沒有坐對)小鴨說,不行不行,我不喜歡這樣分,我看還是圍長圍巾小朋友坐1號車,圍短圍巾小朋友坐2號車(幼兒分好后,小鴨檢查有沒有坐對)
活動目標 1、嘗試分辨爸爸媽媽和寶寶的物品,感知物品的大小及其它特征?! ?、學會按爸爸媽媽和寶寶的圖片標記匹配相應(yīng)的物品?! ?、有初步地關(guān)心爸爸媽媽的情感體驗?! 』顒訙蕚洌骸 〗叹撸喊职謰寢尯蛯殞毜膱D片各一張,三個人的襪子、衣服等衣物若干?! W具:《幼兒用書》人手一冊?! 』顒舆^程: 1、這是誰的衣服?! 〕鍪景职謰寢尯蛯殞毜膱D片,向幼兒介紹:這是寶寶的一家。引導(dǎo)幼兒觀察并說出誰是爸爸,誰是媽媽,誰是寶寶,你是怎么看出來的。 出示實物衣服、褲子等服裝圖片,請幼兒說說這些是什么?有什么不同?這是誰的衣服?你是怎么知道的?
5、交流。學生可能有按照長方體的表面積的計算方法計算的。交流時注意引導(dǎo)學生比較哪種方法最簡便,同時明確在正方體表面積的計算公式中為什么要乘6。7、質(zhì)疑問難。8、揭示表面積的含義:剛才我們在求做長方體和正方體紙盒至少各要用多少硬紙板的問題時,都算出了它們6個面的面積之和,長方體和正方體6個面積的總面積,叫做它的表面積。(三)鞏固練習,擴展應(yīng)用。(10分)數(shù)學來源于生活,又服務(wù)于生活,學生學到的知識通過應(yīng)用才能真正理解和掌握。1、書中的習題。15頁練一練、17頁1、5題。通過有目的的基本練習、鞏固練習、綜合練習,使學生進一步加深了對新知識的理解。強化了學生運用新知解決實際問題的能力,使學生形成了一定技能技巧。
活動三:認識正方體的特征,總結(jié)長方體、正方體的關(guān)系(1)學生用類比法學習正方體的特征,并揭示出長方體和正方體的內(nèi)在聯(lián)系,得出:正方體是特殊的長方體。(2)說說生活中哪些物體是長方體、正方體? 開放的學習方式,以學生的自主學習為中心,讓學生通過自身的發(fā)展嘗試總結(jié),驗證,實現(xiàn)知識的“再創(chuàng)造”。比較是認識事物的主要方法之一,特別在幾何體教學中,運用比較方法,加強形體間的聯(lián)系和區(qū)別,提高識別能力。同時滲透事物普遍聯(lián)系和發(fā)展變化的辯證唯物主義觀。聯(lián)系生活,體現(xiàn)數(shù)學來源于生活,又應(yīng)用于生活的特點。活動四:學以致用智慧屋,包含判斷題、計算題等多種題型的練習,培養(yǎng)學生展開多向思維,是學生能夠從不同角度解決問題的基礎(chǔ)。這樣的練習題,側(cè)重于知識點的落實,鞏固新知。
《函數(shù)的單調(diào)性與最大(?。┲祡》系人教A版高中數(shù)學必修第一冊第三章第二節(jié)的內(nèi)容,本節(jié)包括函數(shù)的單調(diào)性的定義與判斷及其證明、函數(shù)最大(小)值的求法。在初中學習函數(shù)時,借助圖像的直觀性研究了一些函數(shù)的增減性,這節(jié)內(nèi)容是初中有關(guān)內(nèi)容的深化、延伸和提高函數(shù)的單調(diào)性是函數(shù)眾多性質(zhì)中的重要性質(zhì)之一,函數(shù)的單調(diào)性一節(jié)中的知識是前一節(jié)內(nèi)容函數(shù)的概念和圖像知識的延續(xù),它和后面的函數(shù)奇偶性,合稱為函數(shù)的簡單性質(zhì),是今后研究指數(shù)函數(shù)、對數(shù)函數(shù)、冪函數(shù)及其他函數(shù)單調(diào)性的理論基礎(chǔ);在解決函數(shù)值域、定義域、不等式、比較兩數(shù)大小等具體問需用到函數(shù)的單調(diào)性;同時在這一節(jié)中利用函數(shù)圖象來研究函數(shù)性質(zhì)的救開結(jié)合思想將貫穿于我們整個高中數(shù)學教學。
重點分析:本節(jié)課的重點是離散型隨機變量的概率分布,難點是理解離散型隨機變量的概念. 離散型隨機變量 突破難點的方法: 函數(shù)的自變量 隨機變量 連續(xù)型隨機變量 函數(shù)可以列表 X123456p 2 4 6 8 10 12
2、鼓勵幼兒用自己的方式簡單清楚地記錄,發(fā)展幼兒的觀察能力。3、引導(dǎo)幼兒清楚地表述自己的記錄結(jié)果。重點:繼續(xù)鼓勵幼兒用自己的方式記錄,簡單清楚。難點:在老師的引導(dǎo)下清楚地表述自己的記錄結(jié)果 設(shè)計思路:《幼兒園教育綱要》中指出,教育內(nèi)容應(yīng)“貼近幼兒的生活來選擇幼兒感興趣的事物和問題,有助于拓展幼兒的經(jīng)驗和視野”。前一段時間,一直是陰雨綿綿的天氣,我班的孩子都帶來了傘,并且議論著傘。我們知道,傘與我們的生活有著密切的關(guān)系,它的來歷,發(fā)展過程、功能等都具有一定的探索價值和教育價值。因此我們根據(jù)綱要精神,及時利用這一資源,開展了主題“傘的秘密”的探索活動。果然,活動很快激發(fā)了孩子強烈的探索欲望。隨后,他們的興趣點集中在傘的特征上,他們發(fā)現(xiàn)了傘的許多不同,如:顏色、形狀、圖案、大小不同,傘的布料也不同等等。我想,在了解幼兒當前的興趣、經(jīng)驗、需要以及現(xiàn)階段非正式活動進行的分類內(nèi)容,可以結(jié)合主題活動整合一些數(shù)方面的內(nèi)容,因此我設(shè)計了本次正式活動——分花傘,幫助幼兒提升歸納分類的經(jīng)驗,發(fā)展幼兒的思維抽象能力。通過兩次非正式活動和一次正式活動,幼兒已經(jīng)初步能用自己的方式記錄(盡量簡單,讓自己和別人都看得清楚),在本次活動中將繼續(xù)提高使用表征符號的能力;另外,幼兒具有了一些分類的經(jīng)驗,在多重分類的基礎(chǔ)上,開始向按物體的某一明顯特征作肯定與否定的分類過渡。
一、說教材(一)教材簡析《假分數(shù)化成整數(shù)或帶分數(shù)》是小學數(shù)學五年級(下冊)第六單元中的內(nèi)容。本節(jié)內(nèi)容安排了兩個例題。這部分內(nèi)容是在學生掌握了假分數(shù)的意義后,進一步學習把假分數(shù)化成整數(shù)或帶分數(shù),有利于以后進行分數(shù)計算打下堅實的基礎(chǔ)。(二)教學目標根據(jù)教材編排特點,我確定以下教學目標:1、知道帶分數(shù)是假分數(shù),是整數(shù)與真分數(shù)合成的數(shù)。2、會把假分數(shù)化成整數(shù)或帶分數(shù)。3、使學生經(jīng)歷假分數(shù)化成整數(shù)或帶分數(shù)的探索過程,進一步發(fā)展數(shù)感。4、培養(yǎng)良好的學習習慣,樹立學好數(shù)學的信心。(三)教學重、難點會把假分數(shù)化成整數(shù)或帶分數(shù)。二、說教法、學法通過這一環(huán)節(jié)的教學,把假分數(shù)化成整數(shù)或帶分數(shù)時,先要讓學生根據(jù)假分數(shù)的含義進行思考。在這個基礎(chǔ)上,再啟發(fā)學生根據(jù)分數(shù)與除法的關(guān)系計算出結(jié)果,并把用不同方法求得的結(jié)果進行比較,認識到每種方法都是有道理的。
4、簡單小結(jié),內(nèi)化知識引導(dǎo)學生總結(jié)出學習的課題(教師板書),學生再明確表達出“同分母分數(shù)加減混合運算的順序與證書加減混合運算的順序完全相同,計算方法與同分母分數(shù)加減法的計算方法相同,即分母不變,分子相加減。注意能月份的一定要約成最簡分數(shù)為止?!保ㄈ╈柟叹毩?、拓展應(yīng)用1、基礎(chǔ)練習2、引申練習3、解決實際問題 【精心設(shè)計練習,既有與例題程度相當?shù)摹氨5住鳖},又有與生活密切相關(guān)的變式題,拓展思維,培養(yǎng)創(chuàng)新意識,展現(xiàn)數(shù)學的應(yīng)用價值,讓學生體會到學習數(shù)學有用,生活處處離不開數(shù)學。同時適時進行環(huán)保教育和愛國主義教育,起到了教書育人的作用。】五、說板書設(shè)計此板書力圖板書的簡潔美,能突出教學的重難點,提示了方法過程。
二、以人為本,說策略。《數(shù)學課程標準》指出:“數(shù)學教學要緊密聯(lián)系學生的生活實際,從學生的生活經(jīng)驗和已有的知識出發(fā)……”因此,結(jié)合本課教材特點、學生實際情況,我采取小組合作學習,引導(dǎo)學生應(yīng)用學過的分數(shù)、小數(shù)互化的知識進行遷移、類推,學習新知識。同時,讓學生在嘗試探究的積極活動中獲取新知,發(fā)展能力。三、以探為主,說流程。課堂教學是學生數(shù)學知識的獲得、技能技巧的形成、智力、能力的發(fā)展以及思想品德的養(yǎng)成的主要途徑。為了達到預(yù)期的教學目標,我對整個教學過程進行了系統(tǒng)地規(guī)劃,遵循目標性、整體性、啟發(fā)性、主體性等一系列原則進行教學設(shè)計。設(shè)計了以下幾個主要的教學程序:(一)設(shè)疑激趣,引入課題。“興趣是最好的老師”,為了激發(fā)學生的學習興趣,課一開始,我設(shè)計了一個童話故事,在故事中設(shè)計了幫助主人公比較2/5、42%、0.45的問題,然后引出課題。
師:這是一種較為簡便、應(yīng)用廣泛的方法,但有時候也要具體問題具體分析,做題時要合理靈活地選擇計算方法?!堆芯繉W生如何學比研究教師如何教更重要。學生對新知識的學習必須以已有的知識和學習經(jīng)驗作為基礎(chǔ),因此正確分析學生的知識基礎(chǔ)和學習經(jīng)驗就顯得格外重要。我認為分數(shù)除以整數(shù)的教學基礎(chǔ)在于以下幾點:分數(shù)與小數(shù)的轉(zhuǎn)化;分數(shù)的意義;分數(shù)乘法的意義;倒數(shù)的知識;商不變的性質(zhì)等。這些知識在以前的學習中,學都有了足夠的掌握。有了上面的分析基礎(chǔ),我覺得把研究新知識的權(quán)力教給學生,是完全可以的?!?、質(zhì)疑與反思。師:對于這些方法,盡管大家的思維角度不盡相同,但是基本的想法是相同的,想一想我們是怎樣解決問題的?生:用學過的倒數(shù)、商不變的性質(zhì)解決的。師:對。用一句話概括就是運用舊知識解決新新問題。這是一種很重要的學習方法。5、實踐體驗練習鞏固。
一.說教材。我說課的內(nèi)容是人教版課程標準實驗教科書六年級上冊的分數(shù)除法單元中的例1和例2。例1是分數(shù)除法的意義認識,例2是分數(shù)除以整數(shù)的計算。在這之前學生已經(jīng)掌握了整數(shù)除法的意義和分數(shù)乘法的意義及計算,而本課的學習將為統(tǒng)一分數(shù)除法計算法則打下基礎(chǔ)。例1先是整數(shù)除法回顧,再由100克=1/10千克,從而引出分數(shù)除法算式,通過類比使學生認識到分數(shù)除法的意義與整數(shù)除法的意義相同,都是‘已知兩個因數(shù)的積和其中一個因數(shù),求另一個因數(shù)的運算’。例2是分數(shù)除以整數(shù)的計算教學,意在通過讓學生進行折紙實驗、驗證,引導(dǎo)學生將‘圖’和‘式’進行對照分析,從而發(fā)現(xiàn)算法,感悟算理,同時也初步感受數(shù)形結(jié)合的思想方法。根據(jù)剛才對教材的理解,本節(jié)課的教學目標是:1、理解分數(shù)除法的意義與整數(shù)除法的意義相同。2.理解分數(shù)除以整數(shù)的計算原理,掌握計算方法,并能正確的進行計算。
【詞匯精講】highlight n.最好或最精彩的部分 vt.突出;強調(diào);使醒目One of the highlights of the trip was seeing the Taj Mahal.這次旅行的亮點之一是參觀泰姬陵。Your resume should highlight your skills and achievements.你的簡歷應(yīng)該突出你的技能和成就。The report highlights the major problems facing society today.報告強調(diào)了當今社會所面臨的主要問題。I’ve highlighted the important passages in yellow.我用黃色標出了重要段落。7.Edmonton is freezing cold in winter,with daily temperatures averaging -10 ℃.埃德蒙頓冬季寒冷,日平均氣溫為-10°C。【詞匯精講】freezing adj.極冷的;冰凍的Leave a basin of water outside in freezing weather.在冰凍的天氣里,放一盆水在室外。It’s freezing cold outside so wear a warm coat.外面超冷的,所以穿一個暖和一點的外套吧。8.It was not until 9:30 a.m.that they finally reached the capital of Ontario,Toronto.直到上午9時30分,他們才終于到達多倫多的首府安大略省?!揪涫狡饰觥勘揪涫且粋€強調(diào)句,強調(diào)的是句子的時間狀語until 9:30。含有not...until...的句子的強調(diào)句為It is not until...that...,that后面的句子要用肯定形式。It was not until then that I suddenly realized nobody was happier than I was.直到那時我才突然意識到?jīng)]有人比我更幸福了。
1. We'll need ten months at least to have the restaurant decorated.2.Some traditional Chinese dishes from before the Ming Dynasty are still popular today.3.My grandpa's breakfast mainly includes whole grain biscuits and a glass of milk.4.People in this area would eat nearly a kilo of cheese per week.5. We enjoyed a special dinner in a fancy restaurant where the waiters all wore attractive suits.6. He prefers this brand of coffee which, as he said, has an unusually good flavor.Key:1. at a minimum 2. prior to3. consist of4. consume5. elegant6. exceptionalStep 5:Familiarize yourself with some food idioms by matching the meaning on the right with the colored words on the left.1.Public concern for the health of farm animals has mushroomed in the UK2.Anderson may be young but he's certainly rolling to doing dough!3.George is a popular lecturer. He often peppers his speech with jokes.4.As the person to bring home the bacon, he needs to find a stable job.5 He is often regarded as a ham actor for his over emphasized facial expressions. The media reported that these companies had treated pollution as a hot potato. 6.The media reported that these companies had treated pollution as a hot potato.7.Don't worry about the test tomorrow. It's going to be a piece of cake!8. It's best to fold the swimming ring when it is as flat as a pancake.A. completely flatB. something that is very easy to do C.an issue that is hard to deal withD.to include large numbers of somethingE.to earn on e's living to support a familyF. wealthyG.to rapidly increase in numberH. an actor who performs badly, especially by over emphasizing emotions
The activity theme of this section is to design various activities around the key words in the first text. Therefore, the activities require students to pay attention to the spelling of words. On the other hand, let students grasp the meaning of words more accurately through sentences and short texts. This kind of teaching design also helps to improve the ability of using English thinking.1. Cultivating students' ability to use word formation to induce and memorize vocabulary, and the ability to use lexical chunks to express meaning.2. Guide the students to think independently and use the correct form of words to complete sentences3. Cultivate students' habit of using lexical chunks to express language completely, guide students to draw words in sentences quickly, pay attention to word collocation, so as to accumulate more authentic expressions4. Instruct students to create sentences with the chunks.1. Enable students to use the language points in the real situation or specific contexts flexibly and appropriately.2. Guiding the Ss to use unit topic words and the sentence patterns in a richer context.Step1: Think of a word that best fits each definition.1. to remember sth2.to accept, admit, or recognize sth or the truth/existence of sth3. the process of changing sth or yourself to suit a new situation4 .to make sb feel less worried or unhappy5. a strong desire to achieve sth
你校英語報計劃出版一期急救常識???現(xiàn)面向全校學生公開征集稿件,你有意參加。請你根據(jù)下面提示內(nèi)容,用英語寫一篇短文,介紹在車禍現(xiàn)場對傷者進行急救的方法和步驟。1.確保現(xiàn)場的安全;2.詢問傷者,確保其呼吸正常;3.檢查傷口,如流血則應(yīng)采取止血措施;4.如需急救,確保其處于康復(fù)位置。注意:1.詞數(shù)80左右;2.可以適當增加細節(jié),以使行文連貫。參考詞匯:康復(fù)位置 recovery positionAs we all know, having a knowledge of first aid can make a great difference in our daily life. If a traffic accident happens and someone is injured, the following steps can be used to treat the injured.In the first place, we should make sure that the accident scene is safe so that we won’t get hurt. We should ask the injured person if he is OK, and see if he is breathing. What’s more, we should check for cuts and wounds. If he is bleeding badly, it is vital that we should try to stop the bleeding by applying pressure to the injury. This is because if a person loses too much blood, he may die. If necessary, take the injured person to the hospital as soon as possible.Do remember: when giving first aid, please be sure to place the person in a recovery position.
Her tutor told her to acknowledge __________ other people had said if she cited their ideas, and advised her _______(read) lots of information in order to form __________wise opinion of her own.Now halfway __________ her exchange year, Xie Lei felt much more at home in the UK. She said __________ (engage) in British culture had helped and that she had been__________ (involve) in social activities. She also said while learning about business, she was acting as a cultural messenger __________(build) a bridge between the two countries. keys:Xie Lei, a 19yearold Chinese student, said goodbye to her family and friends in China and boarded (board) a plane for London six months ago in order to get a business qualification. She was ambitious(ambition) to set up a business after graduation. It was the first time that she had left (leave) home.At first, Xie Lei had to adapt to life in a different country. She chose to live with a host family, who can help with her adaptation (adapt) to the new culture. When she missed home, she felt comforted (comfort) to have a second family. Also Xie Lei had to satisfy academic requirements. Her tutor told her to acknowledge what other people had said if she cited their ideas, and advised her to read lots of information in order to form a wise opinion of her own.Now halfway through her exchange year, Xie Lei felt much more at home in the UK. She said engaging (engage) in British culture had helped and that she had been involved (involve) in social activities. She also said while learning about business, she was acting as a cultural messenger building a bridge between the two countries.
The theme of this part is to write an article about healthy diet. Through reading and writing activities, students can accumulate knowledge about healthy diet, deepen their understanding of the theme of healthy diet, and reflect on their own eating habits. This text describes the basic principles of healthy diet. The author uses data analysis, definition, comparison, examples and other methods. It also provides a demonstration of the use of conjunctions, which provides important information reference for students to complete the next collaborative task, writing skills, vivid language materials and expressions.1. Teach Ss to learn and skillfully use the new words learned from the text.2. Develop students’ ability to understand, extract and summarize information.3. Guide students to understand the theme of healthy diet and reflect on their own eating habits.4. To guide students to analyze and understand the reading discourse from the aspects of theme content, writing structure, language expression, etc., 5. Enable Ss to write in combination with relevant topics and opinions, and to talk about their eating habits.1. Guide students to analyze and understand the reading discourse from the aspects of theme content, writing structure, language expression, etc.2. Enable them to write in combination with relevant topics and opinions, and to talk about their eating habits.3. Guide the students to use the cohesive words correctly, strengthen the textual cohesion, and make the expression fluent and the thinking clear.Step1: Warming upbrainstorm some healthy eating habits.1.Eat slowly.2.Don’t eat too much fat or sugar.3.Eat healthy food.4.Have a balanced diet.Step2: Read the passage and then sum up the main idea of each paragraph.