This activity introduces some new vocabulary and provide oral practice using the target language.Task 1 . Ask four students to stand in front of the class, and the teacher asks them the following questions as a reporter.1.What are you going to do when you grow up?2.What are you going to do next week?3.What are going to do after school?The students will give different answers, then ask a good student to report what they said.I am going to e a doctor.What did she say?----------She said she was going to be a doctor.I am going to have a party on Friday night.What did he say?-------He said he was going to have a party on Friday night.I am going to do my homework.What did she say ?------ She said she was going to do her homework.I am going home after school.What did she say?-----She said she was going home after school.Say In this unit we are going to learn to use words like to report what someone said.Task 2. Read the instructions. Then ask a student to read the four questions. And write the words on the Bb. Explain what soap opera is.Task 3. Ask the students to Look at the pictures, point out the TV screens in the picture. Ask one girl to read what Marcia said.What did Marcia say? She said She said she was having a surprise party for Lana on Friday night. Repeat the other pictures in the same way.Activity3. Listen and number the pictures in activity 1a.
Step Ⅱ Show the new words on the screen and teach the new words. Read the new words to students and ask them to repeat.Step Ⅲ 3aThis activity introduces new vocabulary and provides reading practice using the target language.In this activity first look at the four pictures.T: What can you see in the pictures?Ss: Four snow globes.T: Right. There are four snow globes in the pictures. And what are they?Ss: They are a monster, two polar bears, two penguins and a birthday cake.Write these words on the blackboard: snow globe; monster; polar bear; penguin and birthday cake. Read them to the class and ask students to repeat each one. Make sure students understand each word.Use a computer to show the E-mail message on the screen and read the message to students.Get students to read the e-mail on their own, and then draw lines connecting each snow globe and its description.Correct the answers.AnswersA line should connect each snow globe picture with the words that describe it in the letter.Step Ⅳ 3bThis activity provides writing practice using the target language.First review Activity 2a on Page 47.Then ask students to complete the message according to Activity 2a.Some partial sentences are given to students. Write about one person's collection.When students work, walk around the room checking the progress and offering help as needed.When they finish, ask some students to read their messages to the class.
(一).知識方面: 1.培養(yǎng)學生能運用過去進行時來描述、談論過去某個時間正在發(fā)生的事情或動作的意識和能力,能就過去某個時間正在發(fā)生的動作做出正確的描述。 2.培養(yǎng)學生的想象力和角色扮演的合作能力。 3.培養(yǎng)學生講述過去發(fā)生的事情經(jīng)過的能力。能正確運用一般過去時來講述故事。 (二).技能方面: 1.本單元的語言目標是Talk about past events and tell a story(談論過去的時間和講述一個故事),圍繞這一目標,要涉及句型: What were you doing when the UFO arrived? ----I was sitting in the barber’s chair. The barber was cutting my hair. 因此必須學習standing、studying、cleaning、sleeping、cooking、making、eating、cutting、等表示地點的詞,以便為上述句型提供語言材料。2.學習過去進行時的有關知識。Was/were+現(xiàn)在分詞,是該時態(tài)的表達式。 3.在學習過程中,要區(qū)分The boy was walking down the street when the UFO landed.和While the boy was walking down the street, the UFO landed.這兩種由when和while引導的狀語從句的句型結構。注意它們的不同。
教師帶領學生復習有關描述寵物的詞匯,采用教師提問學生回答的方進行。如:T:What animals do you think would be good pets?What animals do you think would be bad pets?What do you think are good animals for a six-year-old child?然后學生進行 pairwork 練習。Task two: 師生互動,學習探究 1、播放3a部分的錄音,引導學生一邊聽錄音,一邊跟讀。2、通過聽錄音學生回答以下問題:Why do you think pot-bellied pigs are popular?What are the advantages and disadvantages of keeping such a pet?教師對學生的回答進行及時點評。3.學習范文,學習重點短語,為下步的模仿寫作提供語言素材。T :1. )Have you ever kept a pig as a pet?Do you like pigs? St.:No.…Why don’t you like to keep a pig? St: No.They’re too dirty and lazy(Do you know in some foreign countries like Hollyland, Australia,pigs are the most popular pet.there’s a kind of pig.(圖)it has an interesting name? it ‘s called a pot-bellied pig.) Now,let’s learn an article about this kind of interesting pet.2.)play the tapeSt.:Listen and repeat3.)show some Qs on computer(本子St.: read silently,then answerthe Qs(本子)4.)Ask ss. Close book and retell this passage.(what is a pot-bellied pig? Is it a good or bad pet? ) St.: retell it to each other“A pot –bellied pig is a popular pet now…”5.read the article together.St.:.practice reading
Step 4. Group work (4)1. Ask a pair of students to read the dialogue. Say, This activity provides speaking, listening and writing practice using the target language.2. Ask students to complete the work in groups.3. Check the answers with the whole class. 4. Explain some of the language points. Step 5. Word review (Self check 1)1. Ask students to read the words and the phrases given. 2. Fill in the blanks with proper forms of these words to complete the sentences. 3. Check the answers with the whole class. Homework:Do activity 2 on page 57 after class. Period 6Teaching aims: 1. Teach vocabulary words and the useful expressions. 2. Enable the students to learn etiquette in different culture. 3. Help the students learn how to behave politely in public places and in daily life. Teaching procedures:Step 1. RevisionHelp students to review the function of making requests through a free talk. Then lead them to the topic of etiquette. Explain the meaning of etiquette. Or, ask students to look it up in the dictionary. Step 2. Pre-reading (Section 1)1. Ask students to read the picture and make a list with their partner about how many rules of etiquette can be seen being broken.
所需要用到的句子:Who is that?That is Jack. I like him.Why do you like him?I like him because he is interesting.Task 4: 設計理想中的人類Step one: 設計理想中的人類的外貌。把全班同學分成若干小組,學生可以邊說邊在紙上畫出他們的模樣。Step two: 設計理想中人類的性格。學生們可以把那些能描述性格的單詞寫在圖畫的旁邊。Step three: 每組選出一名同學,其他同組同學提問,他作簡單回答,并說明原因。所需用到的句子:What does he or she look like?He or she ...What is he or she like?He or she is ...Why?Because ...Task 5: 挑戰(zhàn)性活動調(diào)查性格是天生的還是后天形成的,讓每個同學回家去調(diào)查一下自己成長過程中性格是否有變化,具體是怎樣的,為什么會這樣? Teaching Aims:1. Enable students to have a general understanding of how to talk about people's physical appearance.2. Enable students to tackle some essential vocabularies and patterns about describing people. Provide them with necessary skills and methods.3. Create various chances for students to describe the persons they're familiar with, such as classmates, family members, teachers, idols, etc.
Period 2 (3a----Section B 2c)Preview(Pre-task): Key points: What laAdd another information about their pen pals----their language on the cardnguage does she/he speak?She/He speaks....Does she/he have any brothers and sisters? Does she/he speak English?Preview(Pre-task): Add another information about their pen pals----their language on the cardKey points: What language does she/he speak?She/He speaks....Does she/he have any brothers and sisters? Does she/he speak English?Step 1 Revision1.Revisionand dictation of the new words 2.Revise the drills they learned yesterday.(by pairwork and grammar exercise)Step 2 Leading-inT has a conversation with one student. The conversation is following:---Do you have a pen pal?---Yes, I do.---What's your pen pal's name? ---His/Her name is....---Where is your pen pal from? ---He/She is from...---Where does he/she live? ---He/She lives in....---What language does he/she speak?He/She speaks...Write the new words on the Bb. They are following: EnglishChineseJapaneseFrenchStep 3 LearnLearn the new words with the whole class.Finish 3a with the students3b Pairwork T still does an example with one student Then the Ss practise in pairs. The example is following:--Curry Muray is my pen pal. He is from the United States.---What language does he speak?
說明:在幫Li Lei提建議的同時,教育學生如何學好英語。第三課時教學目標1. 語言目標:a) 詞匯: Original, in style, haircut, the same as.b) 語言結構:My friend wears the same clothes and has the same haircut as I do.2. 能力目標:大多數(shù)學生能夠談論自己喜歡哪種服裝,提高查找信息的能力。3. 情感目標:學會如何與朋友相處,要有自己對時尚的看法。教學重點掌握一些重要詞匯。教學難點學會談論問題,并能提出書面建議?!艚虒W突破首先針對Erin的問題,提出個人的建議,模仿2c部分的對話展開雙人交際Pair-work;聽老師誦讀3a部分的信件,并找出LEFT OUT的問題所在;學生完成3b部分的內(nèi)容,給Left Out提出書面的建議;學以口頭形式提出自己目前存在的某個問題,講給大家聽,讓同學們給自己提出一個建議,并作筆錄;學生兩、三個人分成一組,隨意性地進行口語交際,談論P14的第4部分的某個問題,相互交換意見。
由于任何一個一元一次不等式都能寫成ax+b>0(或<0)的形式,而此式的左邊與一次函數(shù)y=ax+b的右邊一致,所以從變化與對應的觀點考慮問題,解一元一次不等式也可以歸結為兩種認識:⑴從函數(shù)值的角度看,就是尋求使一次函數(shù)y=ax+b的值大于(或小于0)的自變量x的取值范圍。⑵從函數(shù)圖像的角度看,就是確定直線y=ax+b在x軸上(或下)方部分所有的點的橫坐標所構成的集合。教學過程中,主要從以上兩個角度探討一元一次不等式與一次函數(shù)的關系。1、“動”―――學生動口說,動腦想,動手做,親身經(jīng)歷知識發(fā)生發(fā)展的過程。2、“探”―――引導學生動手畫圖,合作討論。通過探究學習激發(fā)強烈的探索欲望。3、“樂”―――本節(jié)課的設計力求做到與學生的生活實際聯(lián)系緊一點,直觀多一點,動手多一點,使學生興趣高一點,自信心強一點,使學生樂于學習,樂于思考。4、“滲”―――在整個教學過程中,滲透用聯(lián)系的觀點看待數(shù)學問題的辨證思想。
一.說教材我今天說課的內(nèi)容是義務教育課程標準北師大版七年級下冊第四單元第二節(jié)的《用關系式表示的變量間關系》。在上節(jié)課的學習中學生已通過分析表格中的數(shù)據(jù),感受到變量之間的相依關系,并用自己的語言加以描述,初步具有了有條理的思考和表達的能力,為本節(jié)的深入學習奠定了基礎。二.說教學目標本節(jié)課根據(jù)新的教學理念和學生需要掌握的知識,確立本節(jié)課的三種教學目標:知識與能力目標:根據(jù)具體情況,能用適當?shù)暮瘮?shù)表示方法刻畫簡單實際問題中變量之間的關系,能確定簡單實際問題中函數(shù)自變量的取值范圍,并會求函數(shù)值。過程與方法目標:經(jīng)歷探索某些圖形中變量之間的關系的過程,進一步體會一個變量對另一個變量的影響,發(fā)展符號感。情感態(tài)度與價值觀目標:通過研究,學習培養(yǎng)抽象思維能力和概括能力,通過對自變量和因變量關系的表達,培養(yǎng)數(shù)學建模能力,增強應用意識。
1、老師帶來四幅圖,看看哪些做法是正確的?看看哪些做法是不正確的?對的演一演,錯誤的討論,改一改。2、示圖演一演議一議小結:到鄰居家玩要注意禮貌,靜一點,不亂動人家的東西,玩完玩具要跟著收拾好。教師相機板書:文明做客言行有禮(四)好鄰居1、自學:看圖(38頁三幅圖)2、匯報:你看明白什么了?你想說點什么?3、鄰居幫助了我們給了我們溫暖,那我們怎樣為鄰居做些力所能及的事情呢?4、看看書中的小朋友是怎么做的呢?你怎樣評價他們呢?(五)閱讀角《垃圾不見了》1、小組合作讀,說說你讀明白什么了?2、匯報:小姑娘把樓道的垃圾都扔掉了,垃圾被清理掉了,樓道的環(huán)境好了,鄰居看到了都夸獎小女孩,看來小孩子也可以為鄰居好好相處做貢獻。
知識與技能目標:1. 能正確說出三元一次方程(組)及其解的概念,能正確判別一組數(shù)是否是三元一次方程(組)的解;2. 會根據(jù)實際問題列出簡單的三元一次方程或三元一次方程組。過程與方法目標:1. 通過加深對概念的理解,提高對“元”和“次”的認識。2. 能夠逐步培養(yǎng)類比分析和歸納概括的能力,了解辯證統(tǒng)一的思想。情感態(tài)度與價值觀目標:通過對實際問題的分析,使學生進一步體會方程是刻畫現(xiàn)實世界的有效數(shù)學模型,培養(yǎng)學生良好的數(shù)學應用意識。
(5)這首詩表達了什么感情?請簡要分析。明確:這首詩飽含沉痛悲涼,既嘆國運又嘆自身,把家國之恨、艱危困厄渲染到極致。最后一句由悲而壯、由郁而揚,慷慨激昂、擲地有聲,以磅礴的氣勢、高亢的語調(diào)顯示了詩人的民族氣節(jié)和舍生取義的生死觀。目標導學三:《山坡羊·潼關懷古》1.了解作者和創(chuàng)作背景及詩歌體裁張養(yǎng)浩(1270—1329),字希孟,號云莊,山東濟南人,元代文學家。他詩、文兼擅,而以散曲著稱。張養(yǎng)浩為官清廉,愛民如子。天歷二年(1329年),因關中旱災,被任命為陜西行臺中丞以賑災民?!渡狡卵?#183;潼關懷古》便寫于應召往關中的途中。散曲:到了元代,出現(xiàn)新興的體裁——曲。曲大致分為兩種,一是劇曲,一是散曲。散曲沒有動作、說白,包括套數(shù)和小令兩種基本形式。套數(shù)由若干曲子組成,小令以一支曲子為獨立單位。《天凈沙》《山坡羊》都是有標題的小令。本篇“山坡羊”是小令的曲牌名,“潼關懷古”是標題。
四、范例學習、理解領會例2 某校墻邊有甲、乙兩根木桿。已知乙木桿的高度為1.5m.(1)某一時刻甲木桿在陽光下的影子如圖5-6所示,你能畫出此時乙木桿的影子嗎?(用線段表示影子)(2)在圖中,當乙木桿移動到什么位置時,其影子剛好不落在墻上?(3)在(2)的情況下,如果測得甲、乙木桿的影子長分別為1.24m和1m,那么你能求出甲木桿的高度嗎?學生畫圖、 實驗、觀察、探索。五、隨堂練習課本隨堂練習 學生觀察、畫圖、合作交流。六、課堂總結本節(jié)課通過各種實踐活動,促進大家對內(nèi)容的理解,本課內(nèi)容,要體會物體在太陽光下形成的不同影子,在操作中觀察不 同時刻影子的方向和大小變化特征。在同一時刻,物體的影子與它們的高度成比 例.
探索1:上節(jié)我們列出了與地毯的花邊寬度有關的方程。地毯花邊的寬x(m),滿足方程 (8―2x)(5―2x)=18也就是:2x2―13x+11=0你能估算出地毯花邊的寬度x嗎?(1)x可能小于0嗎?說說你的理由;_____________________________.(2)x可能大于4嗎?可能大于2.5嗎?為什么?(3)完成下表x 0 0.5 1 1.5 2 2.52x2-13x+11 (4)你知道地毯花邊的寬x(m)是多少嗎?還有其他求解方法嗎?與同伴交流。探索2:梯子底端滑動的距離x(m)滿足方程(x+6)2+72=102,也就是x2+12x―15=0(1)你能猜出滑動距離x(m)的大致范圍嗎?(2)x的整數(shù)部分是_____?十分位是_______?x 0 x2+12x-15 所以 ___<x<___進一步計算x x2+12x-15 所以 ___<x<___因此x 的整數(shù)部分是___,十分位是___.三、當堂訓練:完成課本34頁隨堂練習四、學習體會:五、課后作業(yè)
三、課堂檢測:(一)、判斷題(是一無二次方程的在括號內(nèi)劃“√”,不是一元二次方程的,在括號內(nèi)劃“×”)1. 5x2+1=0 ( ) 2. 3x2+ +1=0 ( )3. 4x2=ax(其中a為常數(shù)) ( ) 4.2x2+3x=0 ( )5. =2x ( ) 6. =2x ( ) (二)、填空題.1.方程5(x2- x+1)=-3 x+2的一般形式是__________,其二次項是__________,一次項是__________,常數(shù)項是__________.2.如果方程ax2+5=(x+2)(x-1)是關于x的一元二次方程,則a__________.3.關于x的方程(m-4)x2+(m+4)x+2m+3=0,當m__________時,是一元二次方程,當m__________時,是一元一次方程。四、學習體會:五、課后作業(yè)
(4)議一議:頻率與概率有什么區(qū)別和聯(lián)系?隨著重復實驗次數(shù)的不斷增加,頻率的變化趨勢如何?結論:從上面的試驗可以看到:當重復實驗的次數(shù)大量增加時,事件發(fā) 生的頻率就穩(wěn)定在相應的概率附近,因此,我們可以通過大量重復實驗,用一個事件發(fā)生的頻率來估計這一事件發(fā)生的概率。三、做一做:1.某運動員投籃5次, 投中4次,能否說該運動員投一次籃,投中的概率為4/5?為什么?2.回答下列問題:(1)抽檢1000件襯衣,其中不合格的襯衣有2件,由 此估計抽1件襯衣合格的概率是多少?(2)1998年,在美國密歇根州漢諾城市的一個農(nóng)場里出生了1頭白色的小奶牛,據(jù)統(tǒng)計,平均出生1千萬頭牛才會有1頭是白色的,由此估計出生一頭奶牛為白色的概率為多少?
在Rt△ABC中,AC=AB2+BC2=12+12=2(cm),∴FC=AC-AF=2-1(cm),∴BE=2-1(cm).方法總結:正方形被對角線分成4個等腰直角三角形,因此在正方形中解決問題時常用到等腰三角形的性質(zhì)與直角三角形的性質(zhì).【類型三】 利用正方形的性質(zhì)證明線段相等如圖,已知過正方形ABCD的對角線BD上一點P,作PE⊥BC于點E,PF⊥CD于點F,求證:AP=EF.解析:由PE⊥BC,PF⊥CD知四邊形PECF為矩形,故有EF=PC,這時只需說明AP=CP,由正方形對角線互相垂直平分可知AP=CP.證明:連接AC,PC,如圖.∵四邊形ABCD為正方形,∴BD垂直平分AC,∴AP=CP.∵PE⊥BC,PF⊥CD,∠BCD=90°,∴四邊形PECF為矩形,∴PC=EF,∴AP=EF.方法總結:(1)在正方形中,常利用對角線互相垂直平分證明線段相等;(2)無論是正方形還是矩形,經(jīng)常連接對角線,這樣可以使分散的條件集中.
解:(1)∵點(1,5)在反比例函數(shù)y=kx的圖象上,∴5=k1,即k=5,∴反比例函數(shù)的解析式為y=5x.又∵點(1,5)在一次函數(shù)y=3x+m的圖象上,∴5=3+m,即m=2,∴一次函數(shù)的解析式為y=3x+2;(2)由題意,聯(lián)立y=5x,y=3x+2.解得x1=1,y1=5或x2=-53,y2=-3.∴這兩個函數(shù)圖象的另一個交點的坐標為(-53,-3).三、板書設計反比例函數(shù)的圖象形狀:雙曲線位置當k>0時,兩支曲線分別位于 第一、三象限內(nèi)當k<0時,兩支曲線分別位于 第二、四象限內(nèi)畫法:列表、描點、連線(描點法)通過學生自己動手列表、描點、連線,提高學生的作圖能力.理解函數(shù)的三種表示方法及相互轉(zhuǎn)換,對函數(shù)進行認識上的整合,逐步明確研究函數(shù)的一般要求.反比例函數(shù)的圖象具體展現(xiàn)了反比例函數(shù)的整體直觀形象,為學生探索反比例函數(shù)的性質(zhì)提供了思維活動的空間.
如圖,四邊形OABC是邊長為1的正方形,反比例函數(shù)y=kx的圖象經(jīng)過點B(x0,y0),則k的值為.解析:∵四邊形OABC是邊長為1的正方形,∴它的面積為1,且BA⊥y軸.又∵點B(x0,y0)是反比例函數(shù)y=kx圖象上的一點,則有S正方形OABC=|x0y0|=|k|,即1=|k|.∴k=±1.又∵點B在第二象限,∴k=-1.方法總結:利用正方形或矩形或三角形的面積確定|k|的值之后,要注意根據(jù)函數(shù)圖象所在位置或函數(shù)的增減性確定k的符號.三、板書設計反比例函數(shù)的性質(zhì)性質(zhì)當k>0時,在每一象限內(nèi),y的值隨x的值的增大而減小當k<0時,在每一象限內(nèi),y的值隨x的值的增大而增大反比例函數(shù)圖象中比例系數(shù)k的幾何意義通過對反比例函數(shù)圖象的全面觀察和比較,發(fā)現(xiàn)函數(shù)自身的規(guī)律,概括反比例函數(shù)的有關性質(zhì),進行語言表述,訓練學生的概括、總結能力,在相互交流中發(fā)展從圖象中獲取信息的能力.讓學生積極參與到數(shù)學學習活動中,增強他們對數(shù)學學習的好奇心與求知欲.