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人教版高中政治必修1第三課多彩的消費(fèi)教案

  • 人教A版高中數(shù)學(xué)必修一三角函數(shù)的應(yīng)用教學(xué)設(shè)計(jì)(2)

    人教A版高中數(shù)學(xué)必修一三角函數(shù)的應(yīng)用教學(xué)設(shè)計(jì)(2)

    本節(jié)課是在學(xué)習(xí)了三角函數(shù)圖象和性質(zhì)的前提下來學(xué)習(xí)三角函數(shù)模型的簡(jiǎn)單應(yīng)用,進(jìn)一步突出函數(shù)來源于生活應(yīng)用于生活的思想,讓學(xué)生體驗(yàn)一些具有周期性變化規(guī)律的實(shí)際問題的數(shù)學(xué)“建?!彼枷?從而培養(yǎng)學(xué)生的創(chuàng)新精神和實(shí)踐能力.課程目標(biāo)1.了解三角函數(shù)是描述周期變化現(xiàn)象的重要函數(shù)模型,并會(huì)用三角函數(shù)模型解決一些簡(jiǎn)單的實(shí)際問題.2.實(shí)際問題抽象為三角函數(shù)模型. 數(shù)學(xué)學(xué)科素養(yǎng)1.邏輯抽象:實(shí)際問題抽象為三角函數(shù)模型問題;2.數(shù)據(jù)分析:分析、整理、利用信息,從實(shí)際問題中抽取基本的數(shù)學(xué)關(guān)系來建立數(shù)學(xué)模型; 3.數(shù)學(xué)運(yùn)算:實(shí)際問題求解; 4.數(shù)學(xué)建模:體驗(yàn)一些具有周期性變化規(guī)律的實(shí)際問題的數(shù)學(xué)建模思想,提高學(xué)生的建模、分析問題、數(shù)形結(jié)合、抽象概括等能力.

  • 人教A版高中數(shù)學(xué)必修一簡(jiǎn)單的三角恒等變換教學(xué)設(shè)計(jì)(2)

    人教A版高中數(shù)學(xué)必修一簡(jiǎn)單的三角恒等變換教學(xué)設(shè)計(jì)(2)

    它位于三角函數(shù)與數(shù)學(xué)變換的結(jié)合點(diǎn)上,能較好反應(yīng)三角函數(shù)及變換之間的內(nèi)在聯(lián)系和相互轉(zhuǎn)換,本節(jié)課內(nèi)容的地位體現(xiàn)在它的基礎(chǔ)性上。作用體現(xiàn)在它的工具性上。前面學(xué)生已經(jīng)掌握了兩角和與差的正弦、余弦、正切公式以及二倍角公式,并能通過這些公式進(jìn)行求值、化簡(jiǎn)、證明,雖然學(xué)生已經(jīng)具備了一定的推理、運(yùn)算能力,但在數(shù)學(xué)的應(yīng)用意識(shí)與應(yīng)用能力方面尚需進(jìn)一步培養(yǎng).課程目標(biāo)1.能用二倍角公式推導(dǎo)出半角公式,體會(huì)三角恒等變換的基本思想方法,以及進(jìn)行簡(jiǎn)單的應(yīng)用. 2.了解三角恒等變換的特點(diǎn)、變換技巧,掌握三角恒等變換的基本思想方法. 3.能利用三角恒等變換的技巧進(jìn)行三角函數(shù)式的化簡(jiǎn)、求值以及證明,進(jìn)而進(jìn)行簡(jiǎn)單的應(yīng)用. 數(shù)學(xué)學(xué)科素養(yǎng)1.邏輯推理: 三角恒等式的證明; 2.數(shù)據(jù)分析:三角函數(shù)式的化簡(jiǎn); 3.數(shù)學(xué)運(yùn)算:三角函數(shù)式的求值.

  • 人教A版高中數(shù)學(xué)必修一同角三角函數(shù)的基本關(guān)系教學(xué)設(shè)計(jì)(2)

    人教A版高中數(shù)學(xué)必修一同角三角函數(shù)的基本關(guān)系教學(xué)設(shè)計(jì)(2)

    本節(jié)內(nèi)容是學(xué)生學(xué)習(xí)了任意角和弧度制,任意角的三角函數(shù)后,安排的一節(jié)繼續(xù)深入學(xué)習(xí)內(nèi)容,是求三角函數(shù)值、化簡(jiǎn)三角函數(shù)式、證明三角恒等式的基本工具,是整個(gè)三角函數(shù)知識(shí)的基礎(chǔ),在教材中起承上啟下的作用。同時(shí),它體現(xiàn)的數(shù)學(xué)思想與方法在整個(gè)中學(xué)數(shù)學(xué)學(xué)習(xí)中起重要作用。課程目標(biāo)1.理解并掌握同角三角函數(shù)基本關(guān)系式的推導(dǎo)及應(yīng)用.2.會(huì)利用同角三角函數(shù)的基本關(guān)系式進(jìn)行化簡(jiǎn)、求值與恒等式證明.?dāng)?shù)學(xué)學(xué)科素養(yǎng)1.數(shù)學(xué)抽象:理解同角三角函數(shù)基本關(guān)系式;2.邏輯推理: “sin α±cos α”同“sin αcos α”間的關(guān)系;3.數(shù)學(xué)運(yùn)算:利用同角三角函數(shù)的基本關(guān)系式進(jìn)行化簡(jiǎn)、求值與恒等式證明重點(diǎn):理解并掌握同角三角函數(shù)基本關(guān)系式的推導(dǎo)及應(yīng)用; 難點(diǎn):會(huì)利用同角三角函數(shù)的基本關(guān)系式進(jìn)行化簡(jiǎn)、求值與恒等式證明.

  • 人教版高中地理必修3資源的跨區(qū)域調(diào)配—以我國(guó)的西氣東輸為例說課稿

    人教版高中地理必修3資源的跨區(qū)域調(diào)配—以我國(guó)的西氣東輸為例說課稿

    由于這部分知識(shí)已要求學(xué)生在課前收集相關(guān)資料探討分析,,現(xiàn)在提供機(jī)會(huì)讓他們進(jìn)行交流,充分發(fā)表各自的見解。所以,學(xué)生對(duì)這個(gè)知識(shí)掌握起來并不難。所以,我對(duì)這部分內(nèi)容不做太多的講解,只要做進(jìn)一步的梳理,加深學(xué)生的理解即可。 第三是小結(jié)環(huán)節(jié) 在學(xué)生對(duì)西氣東輸工程的原因掌握之后進(jìn)入的是小結(jié)環(huán)節(jié),這里我進(jìn)一步提出問題:在西氣東輸工程段的建設(shè)中有沒有什么難關(guān)? 通過西氣東輸?shù)碾y度了解,間接的表現(xiàn)我國(guó)的科技的發(fā)展,增加學(xué)生的愛國(guó)情,同時(shí)也說明西氣東輸?shù)慕ǔ梢灿屑夹g(shù)這一原因。從而也完成了本課時(shí)的小結(jié)。 第四環(huán)節(jié)是作業(yè)布置 在這里要求學(xué)生課后預(yù)習(xí)本課剩下的內(nèi)容:思考西氣東輸對(duì)區(qū)域發(fā)展的影響以及為何要實(shí)施資源的跨區(qū)域調(diào)配。通過這樣的問題一方面為下節(jié)課學(xué)習(xí)奠定基礎(chǔ),另一方面體現(xiàn)本課學(xué)習(xí)從“個(gè)”到“類”從特殊到一般的過程。

  • 雙曲線的簡(jiǎn)單幾何性質(zhì)(1)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(cè)

    雙曲線的簡(jiǎn)單幾何性質(zhì)(1)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(cè)

    問題導(dǎo)學(xué)類比橢圓幾何性質(zhì)的研究,你認(rèn)為應(yīng)該研究雙曲線x^2/a^2 -y^2/b^2 =1 (a>0,b>0),的哪些幾何性質(zhì),如何研究這些性質(zhì)1、范圍利用雙曲線的方程求出它的范圍,由方程x^2/a^2 -y^2/b^2 =1可得x^2/a^2 =1+y^2/b^2 ≥1 于是,雙曲線上點(diǎn)的坐標(biāo)( x , y )都適合不等式,x^2/a^2 ≥1,y∈R所以x≥a 或x≤-a; y∈R2、對(duì)稱性 x^2/a^2 -y^2/b^2 =1 (a>0,b>0),關(guān)于x軸、y軸和原點(diǎn)都是對(duì)稱。x軸、y軸是雙曲線的對(duì)稱軸,原點(diǎn)是對(duì)稱中心,又叫做雙曲線的中心。3、頂點(diǎn)(1)雙曲線與對(duì)稱軸的交點(diǎn),叫做雙曲線的頂點(diǎn) .頂點(diǎn)是A_1 (-a,0)、A_2 (a,0),只有兩個(gè)。(2)如圖,線段A_1 A_2 叫做雙曲線的實(shí)軸,它的長(zhǎng)為2a,a叫做實(shí)半軸長(zhǎng);線段B_1 B_2 叫做雙曲線的虛軸,它的長(zhǎng)為2b,b叫做雙曲線的虛半軸長(zhǎng)。(3)實(shí)軸與虛軸等長(zhǎng)的雙曲線叫等軸雙曲線4、漸近線(1)雙曲線x^2/a^2 -y^2/b^2 =1 (a>0,b>0),的漸近線方程為:y=±b/a x(2)利用漸近線可以較準(zhǔn)確的畫出雙曲線的草圖

  • 拋物線的簡(jiǎn)單幾何性質(zhì)(1)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(cè)

    拋物線的簡(jiǎn)單幾何性質(zhì)(1)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(cè)

    問題導(dǎo)學(xué)類比用方程研究橢圓雙曲線幾何性質(zhì)的過程與方法,y2 = 2px (p>0)你認(rèn)為應(yīng)研究拋物線的哪些幾何性質(zhì),如何研究這些性質(zhì)?1. 范圍拋物線 y2 = 2px (p>0) 在 y 軸的右側(cè),開口向右,這條拋物線上的任意一點(diǎn)M 的坐標(biāo) (x, y) 的橫坐標(biāo)滿足不等式 x ≥ 0;當(dāng)x 的值增大時(shí),|y| 也增大,這說明拋物線向右上方和右下方無限延伸.拋物線是無界曲線.2. 對(duì)稱性觀察圖象,不難發(fā)現(xiàn),拋物線 y2 = 2px (p>0)關(guān)于 x 軸對(duì)稱,我們把拋物線的對(duì)稱軸叫做拋物線的軸.拋物線只有一條對(duì)稱軸. 3. 頂點(diǎn)拋物線和它軸的交點(diǎn)叫做拋物線的頂點(diǎn).拋物線的頂點(diǎn)坐標(biāo)是坐標(biāo)原點(diǎn) (0, 0) .4. 離心率拋物線上的點(diǎn)M 到焦點(diǎn)的距離和它到準(zhǔn)線的距離的比,叫做拋物線的離心率. 用 e 表示,e = 1.探究如果拋物線的標(biāo)準(zhǔn)方程是〖 y〗^2=-2px(p>0), ②〖 x〗^2=2py(p>0), ③〖 x〗^2=-2py(p>0), ④

  • 用空間向量研究直線、平面的位置關(guān)系(1)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(cè)

    用空間向量研究直線、平面的位置關(guān)系(1)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(cè)

    二、探究新知一、空間中點(diǎn)、直線和平面的向量表示1.點(diǎn)的位置向量在空間中,我們?nèi)∫欢c(diǎn)O作為基點(diǎn),那么空間中任意一點(diǎn)P就可以用向量(OP) ?來表示.我們把向量(OP) ?稱為點(diǎn)P的位置向量.如圖.2.空間直線的向量表示式如圖①,a是直線l的方向向量,在直線l上取(AB) ?=a,設(shè)P是直線l上的任意一點(diǎn),則點(diǎn)P在直線l上的充要條件是存在實(shí)數(shù)t,使得(AP) ?=ta,即(AP) ?=t(AB) ?.如圖②,取定空間中的任意一點(diǎn)O,可以得到點(diǎn)P在直線l上的充要條件是存在實(shí)數(shù)t,使(OP) ?=(OA) ?+ta, ①或(OP) ?=(OA) ?+t(AB) ?. ②①式和②式都稱為空間直線的向量表示式.由此可知,空間任意直線由直線上一點(diǎn)及直線的方向向量唯一確定.1.下列說法中正確的是( )A.直線的方向向量是唯一的B.與一個(gè)平面的法向量共線的非零向量都是該平面的法向量C.直線的方向向量有兩個(gè)D.平面的法向量是唯一的答案:B 解析:由平面法向量的定義可知,B項(xiàng)正確.

  • 橢圓的簡(jiǎn)單幾何性質(zhì)(1)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(cè)

    橢圓的簡(jiǎn)單幾何性質(zhì)(1)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(cè)

    1.判斷 (1)橢圓x^2/a^2 +y^2/b^2 =1(a>b>0)的長(zhǎng)軸長(zhǎng)是a. ( )(2)若橢圓的對(duì)稱軸為坐標(biāo)軸,長(zhǎng)軸長(zhǎng)與短軸長(zhǎng)分別為10,8,則橢圓的方程為x^2/25+y^2/16=1. ( )(3)設(shè)F為橢圓x^2/a^2 +y^2/b^2 =1(a>b>0)的一個(gè)焦點(diǎn),M為其上任一點(diǎn),則|MF|的最大值為a+c(c為橢圓的半焦距). ( )答案:(1)× (2)× (3)√ 2.已知橢圓C:x^2/a^2 +y^2/4=1的一個(gè)焦點(diǎn)為(2,0),則C的離心率為( )A.1/3 B.1/2 C.√2/2 D.(2√2)/3解析:∵a2=4+22=8,∴a=2√2.∴e=c/a=2/(2√2)=√2/2.故選C.答案:C 三、典例解析例1已知橢圓C1:x^2/100+y^2/64=1,設(shè)橢圓C2與橢圓C1的長(zhǎng)軸長(zhǎng)、短軸長(zhǎng)分別相等,且橢圓C2的焦點(diǎn)在y軸上.(1)求橢圓C1的半長(zhǎng)軸長(zhǎng)、半短軸長(zhǎng)、焦點(diǎn)坐標(biāo)及離心率;(2)寫出橢圓C2的方程,并研究其性質(zhì).解:(1)由橢圓C1:x^2/100+y^2/64=1,可得其半長(zhǎng)軸長(zhǎng)為10,半短軸長(zhǎng)為8,焦點(diǎn)坐標(biāo)為(6,0),(-6,0),離心率e=3/5.(2)橢圓C2:y^2/100+x^2/64=1.性質(zhì)如下:①范圍:-8≤x≤8且-10≤y≤10;②對(duì)稱性:關(guān)于x軸、y軸、原點(diǎn)對(duì)稱;③頂點(diǎn):長(zhǎng)軸端點(diǎn)(0,10),(0,-10),短軸端點(diǎn)(-8,0),(8,0);④焦點(diǎn):(0,6),(0,-6);⑤離心率:e=3/5.

  • 人教版高中地理必修3地理信息技術(shù)在區(qū)域地理環(huán)境研究中的應(yīng)用說課稿

    人教版高中地理必修3地理信息技術(shù)在區(qū)域地理環(huán)境研究中的應(yīng)用說課稿

    通過列表對(duì)比法、歸納法、、多媒體輔助法等教學(xué)方法,突破理論性強(qiáng)、不宜理解的“3S”原理與區(qū)別的知識(shí)難點(diǎn)。學(xué)生更是學(xué)會(huì)運(yùn)用圖表方法、高效記憶法、合作學(xué)習(xí)法等方法學(xué)習(xí)地理知識(shí),增加學(xué)習(xí)能力。[幻燈片] “3S技術(shù)”的應(yīng)用:地理信息技術(shù)的應(yīng)用十分廣泛,從實(shí)際身旁的社會(huì)生產(chǎn)生活,到地理學(xué)的區(qū)域地理環(huán)境研究。學(xué)生的年齡和認(rèn)知范圍決定,此部分的案例教學(xué)的運(yùn)用,前者容易接觸到、簡(jiǎn)單直觀、易區(qū)分掌握“3S”技術(shù)特點(diǎn)和具體應(yīng)用。而后者涉及地理學(xué)科的綜合性和區(qū)域性的特點(diǎn),難度較大。針對(duì)學(xué)情特點(diǎn),我多以前者案例入手學(xué)習(xí),以后者案例加以補(bǔ)充。案例:遙感:(1)視頻 專家解說衛(wèi)星遙感受災(zāi)影象(2)教材 圖1.6 1998年8月28日洞庭湖及荊江地區(qū)衛(wèi)星遙感圖像(3)視頻 2008年5月13日“北京一號(hào)”衛(wèi)星提供汶川的災(zāi)區(qū)遙感圖像(4)教材 閱讀 遙感在農(nóng)業(yè)方面的應(yīng)用

  • 人教版高中歷史必修2戰(zhàn)后資本主義世界經(jīng)濟(jì)體系的形成說課稿3篇

    人教版高中歷史必修2戰(zhàn)后資本主義世界經(jīng)濟(jì)體系的形成說課稿3篇

    1、《戰(zhàn)后資本主義世界經(jīng)濟(jì)體系的形成》是人教版高中歷史必修Ⅱ第八單元第22課,學(xué)時(shí)為1課時(shí)?!稓v史必修Ⅱ》一書用古今貫通、中外關(guān)聯(lián)的八個(gè)專題來著重反映人類社會(huì)經(jīng)濟(jì)和社會(huì)生活領(lǐng)域發(fā)展進(jìn)程中的重要史實(shí)。從第一單元勾勒“古代中國(guó)經(jīng)濟(jì)的基本結(jié)構(gòu)與特點(diǎn)”再到第八單元“世界經(jīng)濟(jì)的全球化趨勢(shì)”,以歷史唯物主義觀點(diǎn)清晰闡明經(jīng)濟(jì)全球化是世界生產(chǎn)力發(fā)展的要求和結(jié)果,是不以人的意志為轉(zhuǎn)移的歷史必然趨勢(shì)。第八單元的標(biāo)題是《世界經(jīng)濟(jì)的全球化趨勢(shì)》,作為最后一單元,從內(nèi)容上講,有強(qiáng)烈的時(shí)代感和現(xiàn)實(shí)意義,是全書內(nèi)容的總結(jié)與升華展望。提起“全球化”這個(gè)十年前才首次出現(xiàn)在美國(guó)《商業(yè)周刊》的新名詞,如今卻是地球人都知道了。然而究竟什么是全球化?作為一歷史現(xiàn)象,全球化有其自身內(nèi)部嚴(yán)密完整的體系,其中核心之一便是制度、規(guī)則的全球化,而這正是本課內(nèi)容的著力點(diǎn)。

  • 人教版高中地理必修3森林的開發(fā)和保護(hù)—以亞馬孫熱帶雨林為例說課稿

    人教版高中地理必修3森林的開發(fā)和保護(hù)—以亞馬孫熱帶雨林為例說課稿

    【這部分的設(shè)計(jì)目的,要學(xué)生明白熱帶雨林只是一個(gè)案例,我們的目的是要合理開發(fā)和保護(hù)全世界的森林。由森林的開發(fā)與保護(hù)來明確區(qū)域發(fā)展過程中產(chǎn)生的環(huán)境問題,危害及治理保護(hù)措施?!咳缓笾R(shí)遷移——東北林區(qū)的開發(fā)與保護(hù)介紹東北地區(qū)的森林材料:東北林區(qū)是我國(guó)最大的天然林區(qū),主要分布于大、小興安嶺及長(zhǎng)白山地,在平衡大氣成分、凈化空氣、補(bǔ)給土壤有機(jī)質(zhì)、涵養(yǎng)水源、保持水土、改善地方氣候有重要的作用。它還是我國(guó)最大的采伐基地,宜林地區(qū)廣,森林樹種豐富。 東北林區(qū)開發(fā)中的問題及影響點(diǎn)撥:由于人類的嚴(yán)重超采,采育脫節(jié),亂砍濫伐,毀林開荒,再加上森林火災(zāi),東北林區(qū)的面積在銳減,帶來了嚴(yán)重的生態(tài)惡化。我們?cè)撊绾伍_發(fā)和保護(hù)東北地區(qū)的森林呢?

  • 空間向量基本定理教學(xué)設(shè)計(jì)人教A版高中數(shù)學(xué)選擇性必修第一冊(cè)

    空間向量基本定理教學(xué)設(shè)計(jì)人教A版高中數(shù)學(xué)選擇性必修第一冊(cè)

    反思感悟用基底表示空間向量的解題策略1.空間中,任一向量都可以用一個(gè)基底表示,且只要基底確定,則表示形式是唯一的.2.用基底表示空間向量時(shí),一般要結(jié)合圖形,運(yùn)用向量加法、減法的平行四邊形法則、三角形法則,以及數(shù)乘向量的運(yùn)算法則,逐步向基向量過渡,直至全部用基向量表示.3.在空間幾何體中選擇基底時(shí),通常選取公共起點(diǎn)最集中的向量或關(guān)系最明確的向量作為基底,例如,在正方體、長(zhǎng)方體、平行六面體、四面體中,一般選用從同一頂點(diǎn)出發(fā)的三條棱所對(duì)應(yīng)的向量作為基底.例2.在棱長(zhǎng)為2的正方體ABCD-A1B1C1D1中,E,F分別是DD1,BD的中點(diǎn),點(diǎn)G在棱CD上,且CG=1/3 CD(1)證明:EF⊥B1C;(2)求EF與C1G所成角的余弦值.思路分析選擇一個(gè)空間基底,將(EF) ?,(B_1 C) ?,(C_1 G) ?用基向量表示.(1)證明(EF) ?·(B_1 C) ?=0即可;(2)求(EF) ?與(C_1 G) ?夾角的余弦值即可.(1)證明:設(shè)(DA) ?=i,(DC) ?=j,(DD_1 ) ?=k,則{i,j,k}構(gòu)成空間的一個(gè)正交基底.

  • 傾斜角與斜率教學(xué)設(shè)計(jì)人教A版高中數(shù)學(xué)選擇性必修第一冊(cè)

    傾斜角與斜率教學(xué)設(shè)計(jì)人教A版高中數(shù)學(xué)選擇性必修第一冊(cè)

    (2)l的傾斜角為90°,即l平行于y軸,所以m+1=2m,得m=1.延伸探究1 本例條件不變,試求直線l的傾斜角為銳角時(shí)實(shí)數(shù)m的取值范圍.解:由題意知(m"-" 1"-" 1)/(m+1"-" 2m)>0,解得1<m<2.延伸探究2 若將本例中的“N(2m,1)”改為“N(3m,2m)”,其他條件不變,結(jié)果如何?解:(1)由題意知(m"-" 1"-" 2m)/(m+1"-" 3m)=1,解得m=2.(2)由題意知m+1=3m,解得m=1/2.直線斜率的計(jì)算方法(1)判斷兩點(diǎn)的橫坐標(biāo)是否相等,若相等,則直線的斜率不存在.(2)若兩點(diǎn)的橫坐標(biāo)不相等,則可以用斜率公式k=(y_2 "-" y_1)/(x_2 "-" x_1 )(其中x1≠x2)進(jìn)行計(jì)算.金題典例 光線從點(diǎn)A(2,1)射到y(tǒng)軸上的點(diǎn)Q,經(jīng)y軸反射后過點(diǎn)B(4,3),試求點(diǎn)Q的坐標(biāo)及入射光線的斜率.解:(方法1)設(shè)Q(0,y),則由題意得kQA=-kQB.∵kQA=(1"-" y)/2,kQB=(3"-" y)/4,∴(1"-" y)/2=-(3"-" y)/4.解得y=5/3,即點(diǎn)Q的坐標(biāo)為 0,5/3 ,∴k入=kQA=(1"-" y)/2=-1/3.(方法2)設(shè)Q(0,y),如圖,點(diǎn)B(4,3)關(guān)于y軸的對(duì)稱點(diǎn)為B'(-4,3), kAB'=(1"-" 3)/(2+4)=-1/3,由題意得,A、Q、B'三點(diǎn)共線.從而入射光線的斜率為kAQ=kAB'=-1/3.所以,有(1"-" y)/2=(1"-" 3)/(2+4),解得y=5/3,點(diǎn)Q的坐標(biāo)為(0,5/3).

  • 第四單元《教學(xué)設(shè)計(jì)》 說課稿  2021—2022學(xué)年統(tǒng)編版高中語文必修下冊(cè)

    第四單元《教學(xué)設(shè)計(jì)》 說課稿 2021—2022學(xué)年統(tǒng)編版高中語文必修下冊(cè)

    (六)說教學(xué)策略1.專題性海量的媒介信息必須加以選擇或者整合,以項(xiàng)目為依據(jù),進(jìn)行信息篩選,形成專題性閱讀與交流;培養(yǎng)學(xué)生對(duì)文本信息“化零為整”的能力,提升跨媒介閱讀與交流學(xué)習(xí)的充實(shí)感。2.情境化情境教學(xué)應(yīng)指向?qū)W生的應(yīng)用,建構(gòu)富有符合時(shí)代氣息的內(nèi)容,與生活經(jīng)驗(yàn)更加貼合,對(duì)學(xué)生的語言建構(gòu)與運(yùn)用有所提升,在情境中能夠有效地進(jìn)行交流。3.任務(wù)化以任務(wù)為導(dǎo)向的序列化學(xué)習(xí),可以為學(xué)生構(gòu)建學(xué)習(xí)路線圖、學(xué)習(xí)框架等具體任務(wù)引導(dǎo);或以跨媒介的認(rèn)識(shí)與應(yīng)用為任務(wù)的設(shè)置引導(dǎo);甚至以閱讀和交流作為序列化安排的實(shí)踐引導(dǎo)。4.整合性跨媒介閱讀與交流是結(jié)合線上線下的資源,形成新的“超媒介”,也能實(shí)現(xiàn)對(duì)信息進(jìn)行“深加工”,多種媒介的信息整合只為一個(gè)核心教學(xué)內(nèi)容服務(wù)。5.互文性語言文字是語文之生命,我們是立足于語言文字的探討,音樂、圖像、視頻等文本與傳統(tǒng)語言文字文本形成互文,觸發(fā)學(xué)生對(duì)學(xué)習(xí)內(nèi)容立體化和具體化的感悟,提升學(xué)生的審美能力。

  • 新人教版高中英語必修3Unit 2 Morals and Virtues-Discovering Useful Structure教學(xué)設(shè)計(jì)

    新人教版高中英語必修3Unit 2 Morals and Virtues-Discovering Useful Structure教學(xué)設(shè)計(jì)

    1. 表示時(shí)間。Hearing these stories, I’m skeptical about the place. = When I heard these stories. . . 2. 表示原因。Not knowing his address, I can’t send this book to him. = Because/Since/As I don’t know his address. . . 3. 表示結(jié)果。His father died, leaving him a lot of money. =. . . and left him a lot of money4. 表示條件。Going straight down the road, you will find the department store. = If you go straight down the road. . . 5. 表示讓步。Being tired, they went on working. =Although they were tired. . . 6. 表示行為方式、伴隨情況或補(bǔ)充說明。He lay on the grass, staring at the sky for a long time. =. . . and stared at the sky for a long time注意:非謂語動(dòng)詞作狀語時(shí), 如所提供的動(dòng)詞不能和句子中的主語保持一致, 動(dòng)詞-ing形式必須有自己的邏輯主語, 通常由名詞或代詞來擔(dān)任, 這就是獨(dú)立主格結(jié)構(gòu)。The last bus having gone, we had to walk home. (having gone的邏輯主語是the last bus, 而不是we)Weather permitting, the football match will be played on Friday. (permitting的邏輯主語是time, 而不是the football match)Step 7 Practice1. ________(study) hard, you are sure to get first prize. 2. People use plastic in their daily life, _______(leave) large amounts of waste. 3. ________(work) hard at your lessons, you are to succeed. 4. The old man, ____________(work) abroad for twenty years, is on the way back to his motherland. 5. ______________(finish) his homework, he was playing on the playground. Answers: 1. Studying 2. leaving 3. Working 4.having worked 5. Having finishedStep 8 HomeworkFinish the homework on Page 22.

  • 新人教版高中英語必修3Unit 2 Morals and Virtues-Reading for Writing教學(xué)設(shè)計(jì)

    新人教版高中英語必修3Unit 2 Morals and Virtues-Reading for Writing教學(xué)設(shè)計(jì)

    1. 這個(gè)寓言是一個(gè)關(guān)于一位國(guó)王古寓言。 The fable is an old fable about a king.2.作者用這個(gè)故事讓讀者對(duì)于社區(qū)的問題負(fù)有個(gè)人責(zé)任的必要印象深刻。The author used the story to impress upon readers with the need to take personal responsibility for problems in the community.3. 這個(gè)故事十分成功的實(shí)現(xiàn)了它的目的。The story was quite successful in achieving its purpose.Step 7 WritingPlease write a review of the story according the outline above.The fable is an old fable about a king who thought his people are lazy, so he put a large stone in the middle of the road and hides and waited to see if anyone will try to move it.The author used this story to impress upon readers with the need to take personal responsibility for problems in the community. The story was quite successful in achieving its purpose, and I liked it because it had a clear moral.However, while the moral of the story is clear, the actions of the king seemed pointless to me, because none of the characters in the story learnt anything. For this reason, I think there are better stories that can be used to impress upon people with the need for personal responsibility.Step 8 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1. Does the writer give a short description of the story ?2. Does the description include the most important details of the story ?3. Does the writer give his or her opinion about the character or their actions ?4. Is the review well-organised ? 5. Does the writer use the -ing form as the adverbial correctly in the writing ?6. Are there any grammar, spelling, or punctuation errors ?Step 9 HomeworkPut up your revised draft in the classroom or read it to your class.

  • 新人教版高中英語必修3Unit 3 Diverse Cultures-Discovering Useful Structure教學(xué)設(shè)計(jì)

    新人教版高中英語必修3Unit 3 Diverse Cultures-Discovering Useful Structure教學(xué)設(shè)計(jì)

    Step 4 PracticeRead the conversation. Find out which words have been left out.Justin: Linlin, I’m going to Guizhou Province next month. I’m super excited! Any recommendations for places to visit?Linlin: Wow, cool! Guizhou is a province with a lot of cultural diversity. Places to visit...well, definitely the Huangguoshu Waterfall first.Justin: What’s special about the waterfall?Linlin: Well, have you ever heard of the Chinese novel Journey to the West ?Justin: Yes, I have. Why ?Linlin: In the back of the waterfall, you will find a cave, which is the home of the Monkey King.Justin: Really? Cool! I’ll definitely check it out.Linlin:And I strongly recommend the ethnic minority villages. You’ll find Chinese culture is much more diverse than you thought.Justin:Sounds great, thanks.Answers:Justin: Linlin, I’m going to Guizhou Province next month. I’m super excited! Do you have any recommendations for places to visit?Linlin: Wow, that’s cool! Guizhou is a province with a lot of cultural diversity. What are some places to visit in Guizhou ? Well, definitely the Huangguoshu Waterfall is the first place to visit in Guizhou Province.Justin: What’s special about the waterfall?Linlin: Well, have you ever heard of the Chinese novel Journey to the West ?Justin: Yes, I have heard of the Chinese novel Journey to the West . Why do you ask if I have heard of the Chinese novel Journey to the West?Linlin: In the back of the waterfall, you will find a cave, which is the home of the Monkey King from Journey to the West.Justin: That’s really true? It’s Cool! I’ll definitely check it out.Linlin:And I strongly recommend the ethnic minority villages on your trip to Guizhou Province. You’ll find Chinese culture is much more diverse than you thought it was.Justin:This all sounds great, thanks.

  • 新人教版高中英語必修3Unit 3 Diverse Cultures-Reading for Writing教學(xué)設(shè)計(jì)

    新人教版高中英語必修3Unit 3 Diverse Cultures-Reading for Writing教學(xué)設(shè)計(jì)

    The topic of this part is “Describe a place with distinctive cultural identity”.This section focuses on Chinese culture by introducing Chinatown, whose purpose is to show the relationship between the Chinese culture and American culture. The Chinese culture in Chinatown is an important part of American culture. Chinatown is an important window of spreading Chinese culture and the spirit homeland of oversea Chinese, where foreigners can experience Chinese culture by themselves.Concretely, the title is “Welcome to Chinatown!”, from which we can know that the article aims at introducing Chinatown. The author used the “Introduction--Body Paragraph--Conclusion” to describe the people, language, architecture, business, famous food and drinks and people’s activities, which can be a centre for Chinese culture and shows its unique charm.1. Read quickly to get main idea; read carefully to get the detailed information.2. Learn the characteristics of writing and language.3. Learn to introduce your own town according to the text.4. Learn to correct others’ writing.1. Learn the characteristics of writing and language.2. Learn to introduce your own town according to the text.Step 1 Lead in ---Small talkIn the reading part, we mentioned the Chinatown of San Francisco. How much do you know about Chinatown of San Francisco ?Chinatown is a main living place for Chinese immigrants, where you can see many Chinese-style buildings, costumes, operas, restaurants, music and even hear Chinese.Step 2 Before reading ---Predict the contentWhat is the writer’s purpose of writing this text ? How do you know ?From the title(Welcome to Chinatown) and some key words from the text(tourist, visit, visitors, experience), we can know the purpose of the text is to introduce Chinatown and show the relationship between Chinese culture and American culture.

  • 新人教版高中英語必修3Unit 3 Diverse Cultures-Listening &Speaking&Talking教學(xué)設(shè)計(jì)

    新人教版高中英語必修3Unit 3 Diverse Cultures-Listening &Speaking&Talking教學(xué)設(shè)計(jì)

    1. In Picture 1 and Picture 2, where do you think they are from? How do you know?From their wearings, we can know they are from ethnic minority of China--- Miao and Dong.Picture 1, they are playing their traditional instrument lusheng in their traditional costumes.Picture 2. the girls are Miao because they wear their traditional costumes and silver accessory.2. In Picture 3, can you find which village it is? What time is it in the picture?It is Dong village. It is at night. Step 2 While-listeningJustin met a new friend while traveling in Guizhou. Listen to their conversation and complete the summaries below.Part 1Justin and Wu Yue watched some Miao people play the lusheng. The instrument has a history of over 3,000 years and it is even mentioned in the oldest collection of Chinese poetry. Then they watched the lusheng dance. Justin wanted to buy some hand-made silver/traditional accessories as souvenirs. He was told that the price will depend on the percentage of silver. Part 2They will go to a pretty Dong minority village called Zhaoxing. they will see the drum towers and the wind and rain bridges. They may also see a performance of the Grand Song of the Dong people.Step 3 Post-listening---TalkingWork in groups. Imagine Justin is telling some friends about his trip to Guizhou. One of you is Justin and the rest of you are his friends. Ask Justin questions about his trip and experience. The following expressions may help you.

  • 新人教版高中英語必修3Unit 3 Diverse Cultures-Reading and Thinking教學(xué)設(shè)計(jì)

    新人教版高中英語必修3Unit 3 Diverse Cultures-Reading and Thinking教學(xué)設(shè)計(jì)

    Discuss these questions in groups.Q1: Have you ever been to a place that has a diverse culture ? What do you think about the culture diversity ?One culturally diverse place that I have been to is Harbin, the capital city of Heilongjiang Province. I went there last year with my family to see the Ice and Snow Festival, and I was amazed at how the culture as different to most other Chinese cities. There is a big Russian influence there, with beautiful Russian architecture and lots of interesting restaurants. I learnt that Harbin is called “the Oriental Moscow” and that many Russians settled there to help build the railway over 100 years ago.Q2: What are the benefits and challenges of cultural diversity ?The benefits: People are able to experience a wide variety of cultures, making their lives more interesting, and it can deepen the feelings for our national culture, it is also helpful for us to learn about other outstanding culture, which helps improve the ability to respect others. The challenges: People may have trouble communicating or understanding each other, and it may lead to disappearance of some civilizations and even make some people think “The western moon is rounder than his own.”Step 7 Post reading---RetellComplete the passage according to the text.Today, I arrived back in San Francisco, and it feels good (1) _____(be) back in the city again. The city succeeded in (2)_________ (rebuild) itself after the earthquake that (3)________ (occur) in 1906, and I stayed in the Mission District, enjoying some delicious noodles mixed with cultures. In the afternoon, I headed to a local museum (4)____ showed the historical changes in California. During the gold rush, many Chinese arrived, and some opened up shops and restaurants in Chinatown to earn a (5)_____ (live). Many others worked on (6)______ (farm), joined the gold rush, or went to build the railway that connected California to the east. The museum showed us (7)____ America was built by immigrants from (8)________ (difference) countries and cultures. In the evening, I went to Chinatown, and ate in a Cantonese restaurant that served food on (9)________(beauty) china plates. Tomorrow evening, I’m going to (10)__ jazz bar in the Richmond District. 答案:1. to be 2. rebuilding 3. occurred 4. that 5.living6. farms 7.how 8. different 9. beautiful 10. a

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