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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(guò)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.
點(diǎn)到直線的距離公式教學(xué)設(shè)計(jì)人教A版高中數(shù)學(xué)選擇性必修第一冊(cè)
4.已知△ABC三個(gè)頂點(diǎn)坐標(biāo)A(－1,3)，B(－3,0)，C(1,2)，求△ABC的面積S.【解析】由直線方程的兩點(diǎn)式得直線BC的方程為 ＝ ，即x－2y＋3＝0，由兩點(diǎn)間距離公式得|BC|＝ ，點(diǎn)A到BC的距離為d，即為BC邊上的高，d＝ ，所以S＝ |BC|·d＝ ×2 × ＝4，即△ABC的面積為4.5.已知直線l經(jīng)過(guò)點(diǎn)P(0,2),且A(1,1),B(-3,1)兩點(diǎn)到直線l的距離相等,求直線l的方程.解:(方法一)∵點(diǎn)A(1,1)與B(-3,1)到y(tǒng)軸的距離不相等,∴直線l的斜率存在,設(shè)為k.又直線l在y軸上的截距為2,則直線l的方程為y=kx+2,即kx-y+2=0.由點(diǎn)A(1,1)與B(-3,1)到直線l的距離相等,∴直線l的方程是y=2或x-y+2=0.得("|" k"-" 1+2"|" )/√(k^2+1)=("|-" 3k"-" 1+2"|" )/√(k^2+1),解得k=0或k=1.(方法二)當(dāng)直線l過(guò)線段AB的中點(diǎn)時(shí),A,B兩點(diǎn)到直線l的距離相等.∵AB的中點(diǎn)是(-1,1),又直線l過(guò)點(diǎn)P(0,2),∴直線l的方程是x-y+2=0.當(dāng)直線l∥AB時(shí),A,B兩點(diǎn)到直線l的距離相等.∵直線AB的斜率為0,∴直線l的斜率為0,∴直線l的方程為y=2.綜上所述,滿足條件的直線l的方程是x-y+2=0或y=2.
兩點(diǎn)間的距離公式教學(xué)設(shè)計(jì)人教A版高中數(shù)學(xué)選擇性必修第一冊(cè)
一、情境導(dǎo)學(xué)在一條筆直的公路同側(cè)有兩個(gè)大型小區(qū),現(xiàn)在計(jì)劃在公路上某處建一個(gè)公交站點(diǎn)C,以方便居住在兩個(gè)小區(qū)住戶的出行.如何選址能使站點(diǎn)到兩個(gè)小區(qū)的距離之和最小?二、探究新知問(wèn)題1.在數(shù)軸上已知兩點(diǎn)A、B，如何求A、B兩點(diǎn)間的距離？提示：|AB|＝|xA－xB|.問(wèn)題2：在平面直角坐標(biāo)系中能否利用數(shù)軸上兩點(diǎn)間的距離求出任意兩點(diǎn)間距離？探究.當(dāng)x1≠x2，y1≠y2時(shí)，|P1P2|＝？請(qǐng)簡(jiǎn)單說(shuō)明理由．提示：可以，構(gòu)造直角三角形利用勾股定理求解．答案：如圖，在Rt △P1QP2中，|P1P2|2＝|P1Q|2＋|QP2|2，所以|P1P2|＝?x2－x1?2＋?y2－y1?2.即兩點(diǎn)P1(x1，y1)，P2(x2，y2)間的距離|P1P2|＝?x2－x1?2＋?y2－y1?2.你還能用其它方法證明這個(gè)公式嗎？2．兩點(diǎn)間距離公式的理解(1)此公式與兩點(diǎn)的先后順序無(wú)關(guān)，也就是說(shuō)公式也可寫(xiě)成|P1P2|＝?x2－x1?2＋?y2－y1?2.(2)當(dāng)直線P1P2平行于x軸時(shí)，|P1P2|＝|x2－x1|.當(dāng)直線P1P2平行于y軸時(shí)，|P1P2|＝|y2－y1|.
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(guò)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(chēng)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).
兩條平行線間的距離教學(xué)設(shè)計(jì)人教A版高中數(shù)學(xué)選擇性必修第一冊(cè)
一、情境導(dǎo)學(xué)前面我們已經(jīng)得到了兩點(diǎn)間的距離公式，點(diǎn)到直線的距離公式，關(guān)于平面上的距離問(wèn)題，兩條直線間的距離也是值得研究的。思考1：立定跳遠(yuǎn)測(cè)量的什么距離？A.兩平行線的距離 B.點(diǎn)到直線的距離 C. 點(diǎn)到點(diǎn)的距離二、探究新知思考2：已知兩條平行直線l_1,l_2的方程，如何求l_1 〖與l〗_2間的距離？根據(jù)兩條平行直線間距離的含義，在直線l_1上取任一點(diǎn)P（x_0,y_0 ），,點(diǎn)P（x_0,y_0 ）到直線l_2的距離就是直線l_1與直線l_2間的距離，這樣求兩條平行線間的距離就轉(zhuǎn)化為求點(diǎn)到直線的距離。兩條平行直線間的距離1. 定義：夾在兩平行線間的__________的長(zhǎng).公垂線段2. 圖示： 3. 求法：轉(zhuǎn)化為點(diǎn)到直線的距離.1．原點(diǎn)到直線x＋2y－5＝0的距離是( )A．2 B．3 C．2 D．5D [d＝|－5|12＋22＝5.選D.]
兩直線的交點(diǎn)坐標(biāo)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.直線2x+y+8=0和直線x+y-1=0的交點(diǎn)坐標(biāo)是( )A.(-9,-10) B.(-9,10) C.(9,10) D.(9,-10)解析:解方程組{■(2x+y+8=0"," @x+y"-" 1=0"," )┤得{■(x="-" 9"," @y=10"," )┤即交點(diǎn)坐標(biāo)是(-9,10).答案:B 2.直線2x+3y-k=0和直線x-ky+12=0的交點(diǎn)在x軸上,則k的值為( )A.-24 B.24 C.6 D.± 6解析:∵直線2x+3y-k=0和直線x-ky+12=0的交點(diǎn)在x軸上,可設(shè)交點(diǎn)坐標(biāo)為(a,0),∴{■(2a"-" k=0"," @a+12=0"," )┤解得{■(a="-" 12"," @k="-" 24"," )┤故選A.答案:A 3.已知直線l1:ax+y-6=0與l2:x+(a-2)y+a-1=0相交于點(diǎn)P,若l1⊥l2,則點(diǎn)P的坐標(biāo)為 . 解析:∵直線l1:ax+y-6=0與l2:x+(a-2)y+a-1=0相交于點(diǎn)P,且l1⊥l2,∴a×1+1×(a-2)=0,解得a=1,聯(lián)立方程{■(x+y"-" 6=0"," @x"-" y=0"," )┤易得x=3,y=3,∴點(diǎn)P的坐標(biāo)為(3,3).答案:(3,3) 4.求證:不論m為何值,直線(m-1)x+(2m-1)y=m-5都通過(guò)一定點(diǎn). 證明:將原方程按m的降冪排列,整理得(x+2y-1)m-(x+y-5)=0,此式對(duì)于m的任意實(shí)數(shù)值都成立,根據(jù)恒等式的要求,m的一次項(xiàng)系數(shù)與常數(shù)項(xiàng)均等于零,故有{■(x+2y"-" 1=0"," @x+y"-" 5=0"," )┤解得{■(x=9"," @y="-" 4"." )┤
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(cè)
切線方程的求法1.求過(guò)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(guò)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(guò)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(zhǎng).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(zhǎng)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(zhǎng).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(zhǎng)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(zhǎng)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(zhǎng)為("|" AB"|" )/2=√(r^2 "-" d^2 )=√("(" √5 ")" ^2 "-" (√10/2) ^2 )=√10/2,所以弦長(zhǎng)|AB|=√10.
直線的兩點(diǎn)式方程教學(xué)設(shè)計(jì)人教A版高中數(shù)學(xué)選擇性必修第一冊(cè)
解析：①過(guò)原點(diǎn)時(shí)，直線方程為y＝－34x.②直線不過(guò)原點(diǎn)時(shí)，可設(shè)其方程為xa＋ya＝1，∴4a＋－3a＝1，∴a＝1.∴直線方程為x＋y－1＝0.所以這樣的直線有2條，選B.答案：B4.若點(diǎn)P(3,m)在過(guò)點(diǎn)A(2,-1),B(-3,4)的直線上,則m= . 解析:由兩點(diǎn)式方程得,過(guò)A,B兩點(diǎn)的直線方程為(y"-(-" 1")" )/(4"-(-" 1")" )=(x"-" 2)/("-" 3"-" 2),即x+y-1=0.又點(diǎn)P(3,m)在直線AB上,所以3+m-1=0,得m=-2.答案:-2 5.直線ax+by=1(ab≠0)與兩坐標(biāo)軸圍成的三角形的面積是 . 解析:直線在兩坐標(biāo)軸上的截距分別為1/a 與 1/b,所以直線與坐標(biāo)軸圍成的三角形面積為1/(2"|" ab"|" ).答案:1/(2"|" ab"|" )6.已知三角形的三個(gè)頂點(diǎn)A(0,4)，B(－2,6)，C(－8,0)．(1)求三角形三邊所在直線的方程；(2)求AC邊上的垂直平分線的方程．解析(1)直線AB的方程為y－46－4＝x－0－2－0，整理得x＋y－4＝0；直線BC的方程為y－06－0＝x＋8－2＋8，整理得x－y＋8＝0；由截距式可知，直線AC的方程為x－8＋y4＝1，整理得x－2y＋8＝0.(2)線段AC的中點(diǎn)為D(－4,2)，直線AC的斜率為12，則AC邊上的垂直平分線的斜率為－2，所以AC邊的垂直平分線的方程為y－2＝－2(x＋4)，整理得2x＋y＋6＝0.
新人教版高中英語(yǔ)必修3Unit 5 The Value of Money-Reading and Thinking教學(xué)設(shè)計(jì)一
Everybody wants to get wealth.In today’s material world,making money or becoming wealthy symbolizes a person’s success and capability. Many people just make every effort, pay any price to attain greater wealth. With money,they can buy nice, large apartments in nice neighborhood. With money they can own luxurious cars. Wealth seems to bring all happiness in life.But is wealth the only road to happiness? Not really. There are many things in the world, which are beyond the means of money, such as friendship, love, health and knowledge. People are so preoccupied with struggling for money that they have no time or would not take the time to form or maintain friendship. What happiness can they feel living as lonely miserable creatures without love or friends in the world even if they accumulate tremendous wealth?In my opinion, people can’t do anything without money, but money is not everything. What money will bring you depends on your personal belief and goal in life. If you are kind enough to help others, especially the poor, money is a good thing to you. With it, you can do much more for the benefit of people and your country, and it will add to your own happiness. If you want money just for your own needs, you’ll never be satisfied or happy. In a word,you should have money spent for more people. Only then can money be the source of your happiness.Step 8 Homework4 students in a group, one acts Roderick, one Oliver, one servant and the fourth one acts Henry Adams, then listen to the tape, pay more attention to the difference between American English and British English in pronunciation, stress, tone.
新人教版高中英語(yǔ)必修3Unit 5 the value of money-Reading For Writing教學(xué)設(shè)計(jì)一
【參考范文】Narrator：(Henry is smiling as he leaves the restaurant. As he is walking down the street, he sees a sign for a place that cuts hair. He decides to get it cut. )H＝Henry；B＝Barber；R＝rude manH：Good afternoon, I'd like to get a cut, if I may. (The barber looks at Henry's hair and continues cutting another man's hair. )Er, I'd really like a haircut. As you can see it's much too long. B：(in a rude manner) Yes, I can see that. Indeed, I can. H：Fine, well I'll have a seat then. (He sits in one of the barber's chairs. The barber turns to look at Henry. )B：It's quite expensive here, you know！Are you sure you can afford it?H：Yes. I think so. (In comes the rude man. )R：Hey you there. I need a haircut quickly. Can you do me straightaway?B：All right, then, get in the chair and I'll see what I can do. R：Thank you. (sits down in one of the barber's chairs)H：Excuse me, but I was here first. Aren't you going to do my hair first?B：This man's in a hurry. H：Well so am I！I insist that you cut my hair first. B：OK, but I'll have to be quick. This gentleman is waiting. H：Thank you. (They both become quiet. After his hair is cut, the barber tells Henry how much he must pay. Henry shows the barber the bank note. )B：Why, Mr . . . (looks shocked)H：Adams. Henry Adams. I'm sorry, I don't have any change. R：You're that Mr Adams! Well，I'm glad I waited or I might never have known it was you. B：Why, Mr Adams, please don't worry！(wearing a big smile) Nothing to worry about！Nothing at all!Please come back any time, even if you only need too little hairs cut！It will be my honour to serve you!
新人教版高中英語(yǔ)必修3Unit 1 Festivals and Celebrations-Reading for Writing教學(xué)設(shè)計(jì)一
The topic of this part is “Write about your festival experience”.During the Listening and Speaking and Talking, students are just asked to say out their festival experiences such as the Spring Festival, Mid-autumn Day, but this part students will be asked to write down their own festival experiences. During the reading part, it introduces the Naadam Festival in Inner Mongolia Autonomous Region, which can give students a good example to imitate. Students not only learn the festival, but touch and feel the Inner Mongolian’s character, the spirit and cultural atmosphere, which can help students form the cultural awareness and learn to enjoy and value the diversity of Chinese culture.Concretely, the dairy tells the experience that the author spent the Naadam Festival in Inner Mongolia Autonomous Region with his/her friend. The structure is clear. In the opening paragraph, it introduces the topic of the Naadam Festival and the whole feeling. Then it introduces the items of the festival like the ceremony, wrestling and horse racing. Finally, it summarizes this experience. Because this part is a travel journal, we must guide students pay more attention to these details: 1. use the first person. 2. use the past tense to tell the past thing and use the present or future tense to describe the scenery. 3. use the timeline to tell the development. 4. be careful for the author’s psychology, emotion and feeling, etc.1. Read quickly to get main idea; read carefully to get the detailed information about Naadam Festival.2. Learn the structure of the reading article and language.3. Write an article about a festival experience4. Learn to use the psychology, emotions and feeling in the writing.1. Write an article about a festival experience.2. Use the structure of the reading article and language.
新人教版高中英語(yǔ)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(yǔ)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(yǔ)必修3Unit 4 Space Exploration-Reading For Writing教學(xué)設(shè)計(jì)一
另一方面，其余的人反對(duì)這個(gè)計(jì)劃，因?yàn)樗赡軙?huì)導(dǎo)致一些不好的影響。7.I hold the belief that space exploration not only enable us to understand how the universe began but also help us survived well into the future.我堅(jiān)信探索太空不僅能夠使我們了解宇宙的起源而且能夠幫助我們更好地走進(jìn)未來(lái)。8.I think we should spend more time and money exploring space so as to provide new and better solutions to people's shortterm and longterm problems.為了給人類(lèi)的短期和長(zhǎng)期問(wèn)題提供更新和更好的解決方法，我認(rèn)為我們應(yīng)該花更多的時(shí)間和金錢(qián)來(lái)探索太空。9．From my point of view，it is wrong of young people to depend on their telephones too much，which may do harm to both their physical and mental health.在我看來(lái)，年輕人過(guò)度依賴(lài)手機(jī)是不對(duì)的，因?yàn)樗鼈兛赡軙?huì)對(duì)他們的身心健康都有害。最近你班同學(xué)就“人類(lèi)是否應(yīng)該進(jìn)行宇宙探索”這個(gè)問(wèn)題進(jìn)行了激烈的討論。有人認(rèn)為，探索宇宙不僅讓人類(lèi)更好地了解宇宙的發(fā)展，還可以用來(lái)指導(dǎo)農(nóng)業(yè)生產(chǎn)，以及把一些探索太空的高新技術(shù)用于現(xiàn)實(shí)生活；也有一些人認(rèn)為探索太空花掉了大量的人力物力；影響了人們的生活水平。請(qǐng)你根據(jù)以下情況寫(xiě)一篇報(bào)告并發(fā)表自己的觀點(diǎn)。注意：1.寫(xiě)作內(nèi)容應(yīng)包括以上全部要點(diǎn)，可適當(dāng)發(fā)揮，使上下文連貫；
人教版高中政治必修3第一課文化與社會(huì)精品教案
(2)歷史課本中歷朝歷代的文化發(fā)展。(3)政治生活中關(guān)于綜合國(guó)力競(jìng)爭(zhēng)的相關(guān)知識(shí)。(4)了解文化產(chǎn)業(yè)的發(fā)展，深入體會(huì)知識(shí)經(jīng)濟(jì)、文化經(jīng)濟(jì)現(xiàn)象。五、【方法點(diǎn)津】：(1)堅(jiān)持理論聯(lián)系實(shí)際的方法，感悟文化現(xiàn)象，理解文化內(nèi)涵，分析文化的作用，增強(qiáng)文化學(xué)習(xí)的自覺(jué)性。(2)自學(xué)探究。以課本的簡(jiǎn)單提示為線索，深入探究文化與經(jīng)濟(jì)、政治的相互交融，探究文化在綜合國(guó)力競(jìng)爭(zhēng)中的地位和作用。(3)集體討論。針對(duì)當(dāng)前國(guó)際競(jìng)爭(zhēng)的實(shí)質(zhì)，探討我國(guó)應(yīng)如何發(fā)展文化產(chǎn)業(yè)、發(fā)展文化生產(chǎn)力、增強(qiáng)文化競(jìng)爭(zhēng)力；討淪為更好地應(yīng)對(duì)文化競(jìng)爭(zhēng)，作為中學(xué)生目前應(yīng)做好哪些準(zhǔn)備。六、【課文導(dǎo)語(yǔ)】：文化，一個(gè)我們十分熟悉的詞匯。然而“熟知并非真知”。有人說(shuō)，文化是知識(shí)；有人說(shuō)，文化是藝術(shù)。究竟什么是“文化”?只要在社會(huì)生活中細(xì)細(xì)體味，我們就能真切地感悟“文化”的內(nèi)涵與文化的力量。
人教版新課標(biāo)小學(xué)數(shù)學(xué)二年級(jí)上冊(cè)統(tǒng)一長(zhǎng)度單位 說(shuō)課稿2篇
教學(xué)內(nèi)容：統(tǒng)一長(zhǎng)度單位教材分析：通過(guò)量一量說(shuō)一說(shuō)想一想等活動(dòng)切實(shí)感受到統(tǒng)一長(zhǎng)度單位的必要性及其對(duì)生活的重要意義。學(xué)情分析：在上冊(cè)“比一比”中學(xué)了比較物體長(zhǎng)短的基礎(chǔ)上學(xué)習(xí)的。盡管學(xué)生有這方面的經(jīng)驗(yàn)和基礎(chǔ)，但是長(zhǎng)度單位的操作和應(yīng)用是多種知識(shí)的綜合，對(duì)小孩來(lái)說(shuō)還是比較難的，在教學(xué)中應(yīng)根據(jù)學(xué)生特點(diǎn)，注重實(shí)踐性，培養(yǎng)觀察力。教學(xué)目標(biāo)：1、讓學(xué)生通過(guò)量一量、說(shuō)一說(shuō)的活動(dòng)，體驗(yàn)統(tǒng)一長(zhǎng)度單位的過(guò)程，感受統(tǒng)一長(zhǎng)度單位的必要性，為厘米、米的學(xué)習(xí)打下基礎(chǔ)。2、讓學(xué)生用不同實(shí)物作標(biāo)準(zhǔn)進(jìn)行測(cè)量，培養(yǎng)學(xué)生的動(dòng)手、思考能力，以及合作、估測(cè)的意識(shí)。3、通過(guò)不同的測(cè)量活動(dòng)，讓學(xué)生體驗(yàn)測(cè)量活動(dòng)的過(guò)程，感受學(xué)習(xí)與生活的聯(lián)系，體驗(yàn)學(xué)習(xí)數(shù)學(xué)的樂(lè)趣。
人教版新課標(biāo)小學(xué)數(shù)學(xué)一年級(jí)上冊(cè)單一標(biāo)準(zhǔn)分類(lèi)的一致性 說(shuō)課稿
同時(shí)，大大地調(diào)動(dòng)起學(xué)生學(xué)生學(xué)習(xí)的熱情。讓學(xué)生對(duì)學(xué)具材料進(jìn)行分類(lèi)，可以選擇不同標(biāo)準(zhǔn)（例如，可以按照學(xué)具的形狀、顏色、是否立體圖形等），讓學(xué)生在小組合作的過(guò)程中獨(dú)自按照一定的標(biāo)準(zhǔn)分類(lèi)，而不是由教師提出分類(lèi)依據(jù)，教師在學(xué)生回答的基礎(chǔ)上幫助學(xué)生總結(jié)分類(lèi)的依據(jù)，以此來(lái)評(píng)價(jià)孩子分類(lèi)的能力。板塊四：鞏固應(yīng)用，拓展延伸數(shù)學(xué)來(lái)源于生活，生活中又充滿數(shù)學(xué)。在本課最后一環(huán)節(jié)，讓學(xué)生說(shuō)說(shuō)在生活中可以運(yùn)用本課所學(xué)知識(shí)做些什么，拓展了學(xué)生的思維。讓學(xué)生整理自己的書(shū)包，進(jìn)一步鞏固體驗(yàn)分類(lèi)的方法，讓數(shù)學(xué)走進(jìn)生活，讓學(xué)生在生活中看到數(shù)學(xué)，接觸數(shù)學(xué)，培養(yǎng)了學(xué)生的探索精神和創(chuàng)新意識(shí)。整節(jié)課的設(shè)計(jì)貼近生活，目的是激發(fā)學(xué)生的興趣。并且體現(xiàn)《課標(biāo)》中數(shù)學(xué)知識(shí)生活化的要求。讓學(xué)生感受到生活中處處有數(shù)學(xué)知識(shí)。結(jié)合具體情境使學(xué)生掌握的知識(shí)層層深入，最后達(dá)到靈活運(yùn)用的程度。
人教版三年級(jí)上冊(cè)語(yǔ)文說(shuō)課稿
二、說(shuō)教學(xué)目標(biāo)。 1.能用正確的情感來(lái)朗讀小鳥(niǎo)與大樹(shù)、樹(shù)根、門(mén)和小女孩四個(gè)對(duì)話。（知識(shí)目標(biāo)) 2.進(jìn)一步鞏固默讀和朗讀能力，學(xué)會(huì)多元交流,多向?qū)υ挕?（能力目標(biāo)) 3.體會(huì)小鳥(niǎo)與大樹(shù)間真摯的友情，使學(xué)生感悟到真正的友情是建立在誠(chéng)信的基礎(chǔ)上的。
（新）部編人教版四年級(jí)上冊(cè)《延安，我把你追尋》說(shuō)課稿（一）
四、說(shuō)教學(xué)方法： 依據(jù)本課的性質(zhì)及小學(xué)四年級(jí)學(xué)生的身心特點(diǎn)，結(jié)合新課標(biāo)的教學(xué)理念，本課設(shè)計(jì)以情感為紐帶，通過(guò)創(chuàng)設(shè)情境、朗讀品味、形象感知、領(lǐng)會(huì)重點(diǎn)詞句，讓學(xué)生在誦讀中感悟延安精神，體會(huì)作者對(duì)延安神追尋的熱切。隨著教學(xué)過(guò)程的推進(jìn)入情、動(dòng)情、移情、抒情，讓學(xué)生得到美的享受和情感的熏陶。 采用自主探究、小組合作的學(xué)習(xí)方法。讓學(xué)生分小組探究學(xué)習(xí)，查找資料、結(jié)合史料體會(huì)情感、感情朗讀、講解匯報(bào)。充分調(diào)動(dòng)學(xué)生的能動(dòng)性，發(fā)揮學(xué)生的積極性，讓學(xué)生在探究學(xué)習(xí)中發(fā)現(xiàn)問(wèn)題、解決問(wèn)題，讀懂詩(shī)歌內(nèi)容，受到精神教育。五、說(shuō)教學(xué)過(guò)程：（一）揭題導(dǎo)入。 以激情的文字導(dǎo)入，簡(jiǎn)單介紹延安的革命歷史，激發(fā)學(xué)生的學(xué)習(xí)興趣。接著板書(shū)課題，讓學(xué)生讀題質(zhì)疑。以三個(gè)問(wèn)題：為什么追尋？追尋什么？怎樣追尋？提挈全文，初步建立詩(shī)歌的層次。 學(xué)生交流對(duì)延安的了解，補(bǔ)充簡(jiǎn)介延安，讓學(xué)生加深對(duì)延安革命圣地的感受。
（新）部編人教版四年級(jí)上冊(cè)《呼風(fēng)喚雨的世紀(jì)》說(shuō)課稿（一）
四、說(shuō)教法學(xué)法 1.教法：本課遵循教師為主導(dǎo)，學(xué)生為主體，訓(xùn)練為主線的原則，注意主體的參與，發(fā)展思維，培養(yǎng)學(xué)習(xí)能力，以達(dá)到教學(xué)目標(biāo)，使用的方法為：情境教學(xué)法、直觀演示法、合作探究法，品詞析句法、以讀帶講法，練習(xí)法，討論法，指導(dǎo)法等激發(fā)學(xué)生學(xué)習(xí)興趣，充分發(fā)揮學(xué)生的主體作用，提高課堂教學(xué)效率。 2.學(xué)法：指導(dǎo)學(xué)生運(yùn)用讀、思、劃、議、說(shuō)，同桌互學(xué)，小組合作等方法。五、說(shuō)教學(xué)過(guò)程：(一)創(chuàng)設(shè)情景，導(dǎo)入新課。 同學(xué)們，當(dāng)你按動(dòng)遙控器看電視的時(shí)候，當(dāng)你打開(kāi)冰箱取飲料的時(shí)候，當(dāng)撥通電話與同學(xué)交談的時(shí)候，當(dāng)你登錄網(wǎng)站查閱資料的時(shí)候，你能感覺(jué)到什么？板書(shū)課題，理解課題。簡(jiǎn)單介紹作者路甬祥及本文的寫(xiě)作意圖。 設(shè)計(jì)依據(jù)：創(chuàng)設(shè)情景，導(dǎo)入新課，一開(kāi)始就抓住了學(xué)生的注意力，激發(fā)學(xué)生的學(xué)習(xí)興趣和情感，自然引入課文。