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直線與圓的位置關(guān)系教學(xué)設(shè)計(jì)人教A版高中數(shù)學(xué)選擇性必修第一冊
切線方程的求法1.求過圓上一點(diǎn)P(x0,y0)的圓的切線方程:先求切點(diǎn)與圓心連線的斜率k,則由垂直關(guān)系,切線斜率為-1/k,由點(diǎn)斜式方程可求得切線方程.若k=0或斜率不存在,則由圖形可直接得切線方程為y=b或x=a.2.求過圓外一點(diǎn)P(x0,y0)的圓的切線時(shí),常用幾何方法求解設(shè)切線方程為y-y0=k(x-x0),即kx-y-kx0+y0=0,由圓心到直線的距離等于半徑,可求得k,進(jìn)而切線方程即可求出.但要注意,此時(shí)的切線有兩條,若求出的k值只有一個(gè)時(shí),則另一條切線的斜率一定不存在,可通過數(shù)形結(jié)合求出.例3 求直線l:3x+y-6=0被圓C:x2+y2-2y-4=0截得的弦長.思路分析:解法一求出直線與圓的交點(diǎn)坐標(biāo),解法二利用弦長公式,解法三利用幾何法作出直角三角形,三種解法都可求得弦長.解法一由{■(3x+y"-" 6=0"," @x^2+y^2 "-" 2y"-" 4=0"," )┤得交點(diǎn)A(1,3),B(2,0),故弦AB的長為|AB|=√("(" 2"-" 1")" ^2+"(" 0"-" 3")" ^2 )=√10.解法二由{■(3x+y"-" 6=0"," @x^2+y^2 "-" 2y"-" 4=0"," )┤消去y,得x2-3x+2=0.設(shè)兩交點(diǎn)A,B的坐標(biāo)分別為A(x1,y1),B(x2,y2),則由根與系數(shù)的關(guān)系,得x1+x2=3,x1·x2=2.∴|AB|=√("(" x_2 "-" x_1 ")" ^2+"(" y_2 "-" y_1 ")" ^2 )=√(10"[(" x_1+x_2 ")" ^2 "-" 4x_1 x_2 "]" ┴" " )=√(10×"(" 3^2 "-" 4×2")" )=√10,即弦AB的長為√10.解法三圓C:x2+y2-2y-4=0可化為x2+(y-1)2=5,其圓心坐標(biāo)(0,1),半徑r=√5,點(diǎn)(0,1)到直線l的距離為d=("|" 3×0+1"-" 6"|" )/√(3^2+1^2 )=√10/2,所以半弦長為("|" AB"|" )/2=√(r^2 "-" d^2 )=√("(" √5 ")" ^2 "-" (√10/2) ^2 )=√10/2,所以弦長|AB|=√10.
第十周國旗下講話稿：助人是快樂之本
尊敬老師、親愛的同學(xué)們，大家好！今天我演講的題目是《助人是快樂之本》我曾經(jīng)看過這樣一個(gè)故事，一位小女孩去醫(yī)院探望哥哥時(shí)捎上了一朵鮮花。隔壁床的一位病人看見了也希望擁有這么一朵漂亮的花。于是，小女孩每次去探病都不忘為這位陌生人也帶上一朵花。后來，這位病人為了讓幸福散播開去，在醫(yī)院旁邊開了一個(gè)小店，讓經(jīng)過他小店去探病的人也帶上一朵鮮花。結(jié)果醫(yī)院里每一個(gè)角落都充滿著歡樂。在困境中的人，傷心的人，擁有一朵花，感覺就像擁有了整個(gè)春天。我們只要為他們獻(xiàn)出一片暖暖的關(guān)愛，那么，我們就會(huì)為他們營造了一個(gè)幸福的天堂。在我們生活中，我們都喜歡被別人關(guān)心的感覺，我們都希望得到別人的支持和理解。
第十周國旗下講話稿：迎接期中考試
老師們，同學(xué)們：大家早上好! 同學(xué)們，時(shí)間過得飛快，轉(zhuǎn)眼又到了一個(gè)檢驗(yàn)我們學(xué)習(xí)狀況的時(shí)刻，本周的星期三至周星期五，我校將進(jìn)行七、八年級和高一、高二年的期中考試。 滿懷信心地迎接期中檢測，爭取優(yōu)異的成績，是我們共同的心愿，為了我們在期中考試中能夠獲得好成績，在以下幾個(gè)方面要做好充分的準(zhǔn)備： 一、思想上要有充分的認(rèn)識： 期中考試是需要我們認(rèn)真對待的一次考試， 它對我們每個(gè)同學(xué)來說意義很大，考試的真正目的是通過考試的檢查，發(fā)現(xiàn)自己學(xué)習(xí)的目的、態(tài)度、知識、能力、方法等方面存在的問題，為自己下一階段有針對性地改進(jìn)學(xué)習(xí)提供重要的依據(jù)。通過考試能提醒大家反省自己的學(xué)習(xí)狀況，盡快改善自己的學(xué)習(xí)習(xí)慣，努力探求適合自己的學(xué)習(xí)方法。 二、心理上要有合理的定位： 對考試我們許多同學(xué)想到的第一個(gè)字就是“怕”，這主要是心理定位不好的問題。怕什么呢？對基礎(chǔ)好的同學(xué)，我們應(yīng)該相信我們的實(shí)力，應(yīng)該有能夠考好的自信
第十周國旗下講話
尊敬的學(xué)校領(lǐng)導(dǎo)、老師，親愛的同學(xué)們：大家早上好！今天我講話的題目是“發(fā)展藝術(shù)教育提高審美情趣”。近期不少教育界、學(xué)術(shù)界的有識之士呼吁，國民藝術(shù)教育應(yīng)該成為人們關(guān)注的一個(gè)社會(huì)問題。這里所說的藝術(shù)教育，不同于培養(yǎng)專門藝術(shù)人才的專業(yè)教育，而是指提高同學(xué)們的文化修養(yǎng)、鑒賞能力、審美情趣。藝術(shù)素質(zhì)教育的目的集中在人格的培養(yǎng)上。注重培養(yǎng)智力為知的素質(zhì)，氣質(zhì)為情的素質(zhì)，性格為意的素質(zhì)，能力為技的素質(zhì)是我們追求的目標(biāo)。藝術(shù)教育是滲透性教育即在語文、數(shù)學(xué)、英語等學(xué)科教學(xué)中滲透藝術(shù)教育。它對于陶冶人們的思想情操，提高人的審美情趣，使人樹立崇高的審美理想，具有其它教育所不可替代的作用。拿藝術(shù)教育中的美術(shù)教育來說，它是通過各種教學(xué)實(shí)踐活動(dòng)，使同學(xué)們在直接感受中了解、認(rèn)識美，在感知中理解鑒賞美，在感悟中體現(xiàn)和創(chuàng)造美，從而達(dá)到較深刻的審美意識。
第十四周國旗下講話稿
老師們，同學(xué)們：大家好！郭曉老師圍繞“珍愛生命”這一主題同大家進(jìn)行了交流，交流的非常好。冬天來了，氣溫驟降，我們一定要把安全牢記在心間。XX年11月17日，中國文明網(wǎng)受權(quán)發(fā)布了第一屆全國文明校園名單。我們的學(xué)校獲得第一屆全國文明校園的榮譽(yù)稱號。我提議，讓我們用熱烈的掌聲向我們自己表示祝賀。全國文明校園，對于一所學(xué)校意味著什么？有多么的重要，聽張老師列舉幾所和我們一起榮獲第一屆全國文明校園的學(xué)校，就會(huì)清楚的知道了。他們是清華大學(xué)、武漢大學(xué)、南開中學(xué)等。同學(xué)們，你們說，這項(xiàng)榮譽(yù)重要不重要？全國文明校園的獲得，是我們毓秀路小學(xué)1999年建校以來收獲的最高榮譽(yù)，這個(gè)榮譽(yù)，不僅屬于我們的學(xué)校，同時(shí)也屬于每一個(gè)在毓秀路小學(xué)工作和學(xué)習(xí)的老師、學(xué)生和工勤人員。讓我們把熱烈的掌聲也送給我們每一個(gè)在毓秀路小學(xué)工作，生活的毓秀人。
第十周國旗下講話稿：愛國
老師們、同學(xué)們：早上好，我今天講話的主題就是愛國。天下興亡匹夫有責(zé)，位卑未敢忘國。我們每個(gè)人都與國家休戚與共。每周一當(dāng)我們站在這里，唱著雄壯激昂的國歌，目睹著五星紅旗冉冉升起，高呼國家的利益高于一切時(shí)，在這種莊嚴(yán)肅穆的氛圍中，我們的國家意識越來越強(qiáng)。這是愛國主義教育的一部分。其實(shí)古今中外無論哪一個(gè)國家都以愛國主義為凝結(jié)的風(fēng)氣,動(dòng)員和激勵(lì)人們團(tuán)結(jié)起來。我們來看看一些發(fā)達(dá)國家是怎樣做的。美國孩子從幼兒園開始就要學(xué)習(xí)畫國旗、唱國歌。一上小學(xué)，每天早晨，都要參加唱國歌、升國旗儀式，把右手放在左胸前，宣誓效忠國家。美國籃球、橄欖球或棒球等重大體育賽事，都有一個(gè)保留節(jié)目，就是在開場前全場起立，由著名歌手領(lǐng)唱美國國歌。還有我們熟悉的美國電影也帶有很濃厚的愛國色彩，好萊塢的許多大片都在向世界宣揚(yáng)“美國精神”，夸張得渲染美國有多厲害。再看看日本，日本目前有許多學(xué)校正積極推行二戰(zhàn)前的愛國思想教育，老師們還在成績單上分A、B、c給學(xué)生們打“愛國分”。日本的新歷史教科書在涉及鄰國及侵華戰(zhàn)爭的重大歷史問題，總是上極盡歪曲、篡改。
第十一周國旗下講話稿
講話稿即一般所說的領(lǐng)導(dǎo)講話稿，是各級領(lǐng)導(dǎo)在各種會(huì)議上發(fā)表帶有宣傳、指示、總結(jié)性質(zhì)講話的文稿。接下來是小編帶來的第十一周國旗下講話稿，希望對你有所幫助~第十一周國旗下講話稿1 老師、同學(xué)們：早上好!今天我講話的主題是：“勤儉節(jié)約是美德”。勤儉節(jié)約是中華民族的傳統(tǒng)美德。它如甘霖，能讓貧窮的土地開出富裕的花;它似雨露，能讓富有的土地結(jié)下智慧的果。古人說：力覽前賢國與家，成由勤儉敗由奢?？v覽全球，許多國家，包括很多的發(fā)達(dá)國家，都把節(jié)約奉為立國之本，為此聯(lián)合國專門把每年的10月31日定為“世界勤儉日”，提醒并要求人們在新世紀(jì)仍然不要忘記艱苦樸素、勤儉節(jié)約。一粥一飯，當(dāng)思來之不易;半絲半縷，恒念物力維艱。然而，當(dāng)我們將目光聚焦在校園內(nèi)外的時(shí)候，我們的心總有些陣陣作疼：偌大的教室空無一人，一盞盞日光燈依舊與明亮的太陽光爭寵;洗手間外的水龍頭，總會(huì)因?yàn)橛腥送岁P(guān)而嗚嗚哭泣;吃飯時(shí)不經(jīng)意間倒掉不合自己胃口的飯菜;上學(xué)放學(xué)前后，總會(huì)有很多同學(xué)在校外的商店、攤點(diǎn)上排隊(duì)買零食吃……其實(shí)稍加注意，我們可以做得很好，但往往我們卻忽視了這些細(xì)節(jié)。同學(xué)們，還記得那則發(fā)人深省的公益廣告嗎?“如果任意浪費(fèi)水資源，那么地球上的最后一滴水，將是我們的眼淚。”
第十周國旗下講話稿3篇
大家好：大家都知道，由于人類向自然界過度的索取，已經(jīng)導(dǎo)致了大自然無情的報(bào)復(fù)：颶風(fēng)、暴雨、暴風(fēng)雪、洪澇、干旱、蟲害、酷暑、森林大火、地震、海嘯等災(zāi)情不期而至，全世界因干旱等原因而造成的遷移性難民預(yù)計(jì)到2025年達(dá)到1億人。所有這一切都在向人類發(fā)出警示：人類在破壞地球環(huán)境的同時(shí)，也在毀滅著自己。人類只有一個(gè)地球，尊重地球就是尊重生命，拯救地球就是拯救未來。4月22日（也就是明天）是“世界地球日”，全球各地的環(huán)保人士和團(tuán)體都在舉辦形形色色的紀(jì)念地球日環(huán)?；顒?dòng)。然而，愛護(hù)地球，保護(hù)地球絕不應(yīng)是止于一朝一夕，一舉一動(dòng)的象征性行為?！暗厍蛉铡敝荒茏鳛橐环N標(biāo)志，在一年中的某一天提醒人們要記得，這個(gè)地球已經(jīng)很脆弱。只有所有的人都能自覺約束自己，都愿齊心協(xié)力地為保護(hù)地球而努力，我們的家園才會(huì)有希望，我們的明天才能越來越美好。 作為中學(xué)生的我們，該如何做呢？
第十一周的國旗下講話
發(fā)揚(yáng)成績，再接再厲，爭取更大進(jìn)步歲月匆匆。開學(xué)的情景似乎還在眼前，只是轉(zhuǎn)瞬之間，半個(gè)學(xué)期已經(jīng)過去?；仡櫚雽W(xué)期來，全體同學(xué)在老師的辛勤教育下，發(fā)奮努力，在各方面取得了長足的進(jìn)步，這是令人高興的。我們學(xué)校的校風(fēng)是“養(yǎng)成良好的習(xí)慣”。這習(xí)慣是多方面的。首先，是必須具備良好的道德情操，樹立良好的精神風(fēng)貌。為此，學(xué)校開展了豐富多彩的活動(dòng)。如八項(xiàng)流動(dòng)紅旗的評比，對各年級獲得流動(dòng)紅旗和評比前三名的優(yōu)勝班級，在每周的升旗儀式時(shí)通報(bào)表揚(yáng)。為繼承先烈精神，發(fā)揚(yáng)光榮傳統(tǒng)，學(xué)校組織了祭掃烈士墓、祭掃葉圣陶先生墓的活動(dòng)。春天，正是草木茂密生長的季節(jié)，為了讓校園里花更艷、草更綠，同學(xué)們自愿參與紅領(lǐng)巾愛綠護(hù)綠的活動(dòng)，發(fā)揮了小主人的作用?！吧r(nóng)場”是葉圣陶先生留給我校的寶貴的教育財(cái)富，學(xué)校為了弘揚(yáng)葉圣陶的育人思想，不但在校園內(nèi)開辟了實(shí)驗(yàn)基地，還在淞南村的生態(tài)農(nóng)莊內(nèi)建立校外“生生農(nóng)場”。為讓學(xué)生在活動(dòng)中經(jīng)受鍛煉，體會(huì)農(nóng)耕的辛勞，二、三、四年級四個(gè)專題班級的學(xué)生步行來到校外生生農(nóng)場——開展了社會(huì)綜合實(shí)踐活動(dòng)。
第十周國旗下講話稿
講話稿有廣義和狹義之分。廣義的講話稿是人們在特定場合發(fā)表講話的文稿；狹義的講話稿即一般所說的領(lǐng)導(dǎo)講話稿，是各級領(lǐng)導(dǎo)在各種會(huì)議上發(fā)表帶有宣傳、指示、總結(jié)，下面是小編整理的第十周國旗下講話稿，歡迎來參考！篇一：第十周國旗下講話稿 老師們，同學(xué)們：早上好！今天我演講的題目是：認(rèn)真復(fù)習(xí)準(zhǔn)備，迎接期中考試。五一小長假結(jié)束了，半個(gè)學(xué)期也悄然而逝，我們即將面臨期中考試。同學(xué)們應(yīng)科學(xué)的制定自己的學(xué)習(xí)計(jì)劃，使復(fù)習(xí)工作有秩序的進(jìn)行，達(dá)到事半功倍的效果?？鬃诱f過“學(xué)而時(shí)習(xí)之，不亦說乎？”意思是學(xué)了新知識，然后有計(jì)劃的按時(shí)去復(fù)習(xí)，也是一件快樂的事情。心理學(xué)研究表明，遺忘是必然的，世上從來就沒有真正過目不忘的人，已經(jīng)學(xué)過的知識需要不斷地、重復(fù)的記憶，才能使知識在大腦里留下深深地印痕。著名的橋梁專家茅以升記憶力超人，曾經(jīng)有很多人向他詢問他的記憶秘訣，他回答說：說起來也簡單，就是重復(fù)！重復(fù)！再重復(fù)！學(xué)過的東西，只有反復(fù)復(fù)習(xí)，才能牢固的記憶，并且能夠應(yīng)用自如。由此可見，復(fù)習(xí)對每位同學(xué)都顯得尤為重要。
人教版高中數(shù)學(xué)選擇性必修二導(dǎo)數(shù)的概念及其幾何意義教學(xué)設(shè)計(jì)
新知探究前面我們研究了兩類變化率問題：一類是物理學(xué)中的問題，涉及平均速度和瞬時(shí)速度；另一類是幾何學(xué)中的問題，涉及割線斜率和切線斜率。這兩類問題來自不同的學(xué)科領(lǐng)域，但在解決問題時(shí)，都采用了由“平均變化率”逼近“瞬時(shí)變化率”的思想方法；問題的答案也是一樣的表示形式。下面我們用上述思想方法研究更一般的問題。探究1： 對于函數(shù)y=f(x) ，設(shè)自變量x從x_0變化到x_0+ ?x ，相應(yīng)地，函數(shù)值y就從f(x_0)變化到f(〖x+x〗_0) 。這時(shí)， x的變化量為?x，y的變化量為?y=f(x_0+?x)-f(x_0)我們把比值?y/?x，即?y/?x=(f(x_0+?x)-f(x_0)" " )/?x叫做函數(shù)從x_0到x_0+?x的平均變化率。1．導(dǎo)數(shù)的概念如果當(dāng)Δx→0時(shí)，平均變化率ΔyΔx無限趨近于一個(gè)確定的值，即ΔyΔx有極限，則稱y＝f (x)在x＝x0處____，并把這個(gè)________叫做y＝f (x)在x＝x0處的導(dǎo)數(shù)(也稱為__________)，記作f ′(x0)或________，即
人教A版高中數(shù)學(xué)必修一任意角教學(xué)設(shè)計(jì)（1）
本節(jié)課選自《普通高中課程標(biāo)準(zhǔn)數(shù)學(xué)教科書-必修一》（人 教A版）第五章《三角函數(shù)》，本節(jié)課是第1課時(shí)，本節(jié)主要介紹推廣角的概念,引入正角、負(fù)角、零角的定義，象限角的概念以及終邊相同的角的表示法。樹立運(yùn)動(dòng)變化的觀點(diǎn),并由此進(jìn)一步理解推廣后的角的概念。教學(xué)方法可以選用討論法,通過實(shí)際問題，如時(shí)針與分針、體操等等都能形成角的流念,給學(xué)生以直觀的印象,形成正角、負(fù)角、零角的概念,明確規(guī)定角的概念，通過具體問題讓學(xué)生從不同角度理解終邊相同的角,從特殊到一般歸納出終邊相同的角的表示方法。A.了解任意角的概念；B.掌握正角、負(fù)角、零角及象限角的定義，理解任意角的概念；C.掌握終邊相同的角的表示方法；D.會(huì)判斷角所在的象限。 1.數(shù)學(xué)抽象：角的概念；2.邏輯推理：象限角的表示；3.數(shù)學(xué)運(yùn)算：判斷角所在象限；4.直觀想象：從特殊到一般的數(shù)學(xué)思想方法；
人教A版高中數(shù)學(xué)必修一任意角教學(xué)設(shè)計(jì)（2）
學(xué)生在初中學(xué)習(xí)了 ～ ，但是現(xiàn)實(shí)生活中隨處可見超出 ～ 范圍的角.例如體操中有“前空翻轉(zhuǎn)體 ”，且主動(dòng)輪和被動(dòng)輪的旋轉(zhuǎn)方向不一致.因此為了準(zhǔn)確描述這些現(xiàn)象，本節(jié)課主要就旋轉(zhuǎn)度數(shù)和旋轉(zhuǎn)方向?qū)堑母拍钸M(jìn)行推廣.課程目標(biāo)1.了解任意角的概念.2.理解象限角的概念及終邊相同的角的含義．3.掌握判斷象限角及表示終邊相同的角的方法．?dāng)?shù)學(xué)學(xué)科素養(yǎng)1.數(shù)學(xué)抽象：理解任意角的概念，能區(qū)分各類角；2.邏輯推理：求區(qū)域角；3.數(shù)學(xué)運(yùn)算：會(huì)判斷象限角及終邊相同的角.重點(diǎn)：理解象限角的概念及終邊相同的角的含義；難點(diǎn)：掌握判斷象限角及表示終邊相同的角的方法．教學(xué)方法：以學(xué)生為主體，采用誘思探究式教學(xué)，精講多練。教學(xué)工具：多媒體。一、 情景導(dǎo)入初中對角的定義是：射線OA繞端點(diǎn)O按逆時(shí)針方向旋轉(zhuǎn)一周回到起始位置，在這個(gè)過程中可以得到 ～ 范圍內(nèi)的角.但是現(xiàn)實(shí)生活中隨處可見超出 ～ 范圍的角.例如體操中有“前空翻轉(zhuǎn)體 ”，且主動(dòng)輪和被動(dòng)輪的旋轉(zhuǎn)方向不一致.
人教版高中歷史必修2對外開放格局的初步形成說課稿2篇
二、對外開放的步驟1、經(jīng)濟(jì)特區(qū)的創(chuàng)辦2、沿海經(jīng)濟(jì)開放區(qū)的開辟3、浦東的開發(fā)和開放設(shè)問：“我國的對外開放的新格局是如何形成的？有什么特點(diǎn)？”教師總結(jié)：經(jīng)過20多年的改革開放，我國已形成了經(jīng)濟(jì)特區(qū)-沿海開放城市-沿海開放區(qū)-沿江開放港口城市-沿邊開放城鎮(zhèn)-內(nèi)地省會(huì)開放城市的開放體系。初步確立了我國全方位、多層次、寬領(lǐng)域的對外開放格局。課堂探究：江澤民曾說：“我國社會(huì)主義市場經(jīng)濟(jì)的發(fā)展，全方位對外開放格局的形成，再加上巨大的潛在市場，使我國加入世界貿(mào)易組織的愿望最終變成現(xiàn)實(shí)。我們搞現(xiàn)代化建設(shè)，必須到國際市場的大海中去游泳，并且奮力地去游，力爭上游，不斷提高我們搏擊風(fēng)浪的本事?！弊鳛橐幻F(xiàn)代公民，應(yīng)當(dāng)加強(qiáng)哪方面的素質(zhì)來應(yīng)對開放帶來的機(jī)遇和挑戰(zhàn)。
新人教版高中英語必修3Unit 4 Space Exploration-Listening&Speaking&Talking教學(xué)設(shè)計(jì)一
Listening and Speaking introduces the topic of “talking about how to become an astronaut”. This period is aimed to inform students some details about the requirements of being an astronaut. Students can be motivated and inspired by the astronauts. Teachers ought to encourage students to learn from them and let them aim high and dream big.Listening and Talking introduces the theme of "talk about life in space". This part also informs students more details about life in space and can inspire students to be curious about this job. 1. Guide students to listen for numbers concerning dates, years and ages etc2. Cultivate students' ability to talk about how to become an astronaut and life in space ; 3. Instruct students to use functional sentences of the dialogue such as “ first of all, I am not sure, so what might be .. I guess.. I wonder…I am curious…)appropriately.1. Guide students to understand the content of listening texts in terms of the whole and key details; 2. Cultivate students' ability to guess the meaning of words in listening; discuss with their peers how to become a qualified astronaut and describe the life in space.Part 1: Listening and SpeakingStep 1: Lead inPredictionThe teacher can ask students to predict what the listening text is about by looking at the pictures.About how to become an astronaut./the requirements of an astronautStep 2: Then, play the radio which is about an interview a. And after finishing listening for the first time, the students need to solve the following tasks.
新人教版高中英語必修3Unit 4 Space Exploration-Discovering Useful Structure教學(xué)設(shè)計(jì)
The theme of the section is “Describe space facts and efforts to explore space”. Infinitives are one of non-finite verbs, as the subjects, objects, predicative, attributes and adverbials. This unit is about space exploration, which is a significant scientific activity, so every scientific activity has strong planning. Therefore, using the infinitives to show its purpose, explanations or restrictions is the best choice.1. Learn the structure, functions and features of infinitives.2. Learn to summarize some rules about infinitives to show purpose and modify.3. Learn to use infinitives in oral and writing English. 1. Learn the structure, functions and features of infinitives.2. Learn to summarize some rules about infinitives to show purpose and modify.3. Learn to use use infinitives in oral and writing English.Step 1 Lead in---Pair workLook at the following sentences and focus on the italicized infinitives. In pairs, discuss their functions. 1. I trained for a long time to fly airplanes as a fighter pilot..(作目的狀語)2. As we all know, an astronaut needs to be healthy and calm in order to work in space..(作目的狀語)3. First of all, you must be intelligent enough to get a related college degree..(作目的狀語)4. Some scientist were determined to help humans realise their dream to explore space..(作定語)5. On 12 April 1961, Yuri Gagarin became the first person in the world to go into space..(作定語)Summary:1. 不定式的結(jié)構(gòu)：to+do原形。2. 分析上面的句子，我們知道在描述太空探索時(shí)，動(dòng)詞不定式不僅可以用來表目的，還可以用來作定語，表修飾。
新人教版高中英語必修3Unit 4 Space Exploration-Listening&Speaking＆Talking教學(xué)設(shè)計(jì)二
The themes of this part are “Talk about how to become an astronaut” and “Talk about life in space”. As Neil Armstrong said “Mystery creates wonder and wonder is the basis of man’s desire to understand. Space is difficult for human to reach, therefore, humans are full of wonders about it. However, if wanting to achieve the dream of reaching the Moon, some of our human should work hard to be an astronaut at first. Part A(Talk about how to become an astronaut) is a radio interview in a radio studio, where the host asked the Chinese astronauts about his story how to become an astronaut. Yang Liwei told his dreamed to be an astronaut since childhood. Then he worked hard to get into college at 22. The next 10 years, he gradually became an experienced pilot. At the same time, to be an astronaut, he had to study hard English, science and astronomy and trained hard to keep in good physical and mental health and to practise using space equipment. Part B (Talk about life in space) is also an interview with the astronaut Brown, who is back on the earth. The host Max asked about his space life, such as his emotion about going back the earth, the eating, shower, brushing, hobbies and his work. Part A and Part B are interviews. So expressing curiosity about the guests’ past life is a communicative skill, which students should be guided to learn.1. Students can get detailed information about how Yang Liwei became an astronaut and Max’s space life.2. Students learn to proper listening strategy to get detailed information---listening for numbers and taking notes.3. Students can learn related sentences or phrases to express their curiosity like “ I wish to know...” “I’d love to know...”4. Students can learn more about the space and astronauts, even be interested in working hard to be an astronaut
新人教版高中英語必修3Unit 4 Space Exploration-Reading and Thinking教學(xué)設(shè)計(jì)二
The theme of this unit focuses on “space exploration.” Students will learn about the training and experience needed to become an astronaut. The text is mainly about the development of space exploration. On the one hand, the text helps students to have a good understanding about the great feats humans have achieved, on the other hand, they will further understand the contributions that we Chinese have achieved, and feel confident and proud about our homeland and strengthen their love for our country. The teacher should instruct students to aim high and study harder to make great progress in the space career if possible.1. Read about the development and value of space exploration.2. Explore the mysteries of the universe and the achievements in space exploration.3. Skillfully use the vocabulary of this text to cultivate self-study ability 4. Develop cooperative learning ability through discussion.1. Enable the Ss to talk about the development and value of space exploration.2. Guide the Ss to summarize the main idea of each paragraph as well as the main idea of the text.3. Help Ss comprehend the main reasons for space exploration. Multi-media, textbook, notebooks.Step 1: Warming up and predictionLook at the title and the pictures of the text and predict what the text will be about?2. What are the main reasons for space exploration?
新人教版高中英語必修3Unit 4 Space Exploration-Reading and Thinking教學(xué)設(shè)計(jì)一
Q4: What is the function of the International exploration ?Having astronauts from different countries on boardQ5: What can you learn from Para 4 ?China has made great achievements in exploring spaceQ6: What is the attitude to the space exploration ?SupportiveStep 6 Post reading---RetellPeople have always wanted to learn more about space. Before the mid-20th century, most people felt (1)_________ (travel) into space was an impossible dream. However, (2)____ the help of scientists, peoplesucceeded in realizing their dream (3) _________ (explore) space. On 4 October 1957, the Sputnik 1 satellite (4) ____________(launch) by the USSR. (5) ________________ scientists try to make sure nothing goes wrong, accidents can still happen. These disasters made everyone(6)___________(disappoint), but people still believe in the importance of (7) ________(carry) on space exploration. In 2003, China became the third country to (8)_____________ (independent) send humans into space. Then Shenzhou 6 and 7 completed (9)____ second manned orbit and the first Chinese spacewalk. In spite of the difficulties, scientists hope future (10)__________ (discovery) will not only enable us to understand the universe but also help us survive well into the future.Answers: 1. travelling 2. with 3. to explore 4. was launched 5. Although6. disappointed 7. carrying 8. independently 9. a 10. discoveriesStep 6 Post reading---Critical thinkingQ1: What do you think of the space exploration ? I think it is beneficial to us. Through further study of space, people will make full use of it in the future, such as the space experiments by Wang Yaping in Tian Gong 1.Q2: If you are determined to be an astronaut, what should you prepare at present ?First of all, I should study hard to get a related college degree. Besides, I must keep mental and physical healthy.Step 7. HomeworkTry to summarize the structure of the article by a mind map.
新人教版高中英語必修3Unit 4 Space Exploration-Reading for Writing教學(xué)設(shè)計(jì)二
⑦在我看來, 探索太空是值得的。As far as I am concerned, it is worthwhile to explore the space.Step 10 Writing---draftRecently, students in our class have had heated a discussion on whether space is worth exploring. Students hold different ideas about it.30% of us think space exploration is not worthwhile. They think space is too far away from us and our daily life and is a waste of money. And the money spent on space exploration can be used to solve the earth’s problems such as starvation and pollution.On the other hand，70% think space is worth exploring because we have benefited a lot from it，such as using satellites for communication and weather forecast. What’s more，with further space research，we may solve the population problem by moving to other planets one day. Also，space research will enable us to find new sources to solve the problem of energy shortages on the earth.As far as I am concerned, it is worthwhile to explore the space. Not only can it promote the development of society but also enrich our life. Step 11 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1.Does the writer explain why he/she changed/wanted to change?2.Does the writer tell how the changes have improved or will improve his/her life?3.Is the text well－organised?4.Does the writer use words and expressions to show similarities and differences?5.Are there any grammar or spelling errors?6.Does the writer use correct punctuation？