當(dāng)A,C顏色相同時(shí),先染P有4種方法,再染A,C有3種方法,然后染B有2種方法,最后染D也有2種方法.根據(jù)分步乘法計(jì)數(shù)原理知,共有4×3×2×2=48(種)方法;當(dāng)A,C顏色不相同時(shí),先染P有4種方法,再染A有3種方法,然后染C有2種方法,最后染B,D都有1種方法.根據(jù)分步乘法計(jì)數(shù)原理知,共有4×3×2×1×1=24(種)方法.綜上,共有48+24=72(種)方法.故選B.答案:B5.某藝術(shù)小組有9人,每人至少會(huì)鋼琴和小號(hào)中的一種樂(lè)器,其中7人會(huì)鋼琴,3人會(huì)小號(hào),從中選出會(huì)鋼琴與會(huì)小號(hào)的各1人,有多少種不同的選法?解:由題意可知,在藝術(shù)小組9人中,有且僅有1人既會(huì)鋼琴又會(huì)小號(hào)(把該人記為甲),只會(huì)鋼琴的有6人,只會(huì)小號(hào)的有2人.把從中選出會(huì)鋼琴與會(huì)小號(hào)各1人的方法分為兩類(lèi).第1類(lèi),甲入選,另1人只需從其他8人中任選1人,故這類(lèi)選法共8種;第2類(lèi),甲不入選,則會(huì)鋼琴的只能從6個(gè)只會(huì)鋼琴的人中選出,有6種不同的選法,會(huì)小號(hào)的也只能從只會(huì)小號(hào)的2人中選出,有2種不同的選法,所以這類(lèi)選法共有6×2=12(種).因此共有8+12=20(種)不同的選法.
教 學(xué) 過(guò) 程教師 行為學(xué)生 行為教學(xué) 意圖時(shí)間 *揭示課題 7.1 平面向量的概念及線性運(yùn)算 *創(chuàng)設(shè)情境 興趣導(dǎo)入 如圖7-1所示,用100N①的力,按照不同的方向拉一輛車(chē),效果一樣嗎? 圖7-1 介紹 播放 課件 引導(dǎo) 分析 了解 觀看 課件 思考 自我 分析 從實(shí)例出發(fā)使學(xué)生自然的走向知識(shí)點(diǎn) 0 3*動(dòng)腦思考 探索新知 【新知識(shí)】 在數(shù)學(xué)與物理學(xué)中,有兩種量.只有大小,沒(méi)有方向的量叫做數(shù)量(標(biāo)量),例如質(zhì)量、時(shí)間、溫度、面積、密度等.既有大小,又有方向的量叫做向量(矢量),例如力、速度、位移等. 我們經(jīng)常用箭頭來(lái)表示方向,帶有方向的線段叫做有向線段.通常使用有向線段來(lái)表示向量.線段箭頭的指向表示向量的方向,線段的長(zhǎng)度表示向量的大小.如圖7-2所示,有向線段的起點(diǎn)叫做平面向量的起點(diǎn),有向線段的終點(diǎn)叫做平面向量的終點(diǎn).以A為起點(diǎn),B為終點(diǎn)的向量記作.也可以使用小寫(xiě)英文字母,印刷用黑體表示,記作a;手寫(xiě)時(shí)應(yīng)在字母上面加箭頭,記作. 圖7-2 平面內(nèi)的有向線段表示的向量稱(chēng)為平面向量. 向量的大小叫做向量的模.向量a, 的模依次記作,. 模為零的向量叫做零向量.記作0,零向量的方向是不確定的. 模為1的向量叫做單位向量. 總結(jié) 歸納 仔細(xì) 分析 講解 關(guān)鍵 詞語(yǔ) 思考 理解 記憶 帶領(lǐng) 學(xué)生 分析 引導(dǎo) 式啟 發(fā)學(xué) 生得 出結(jié) 果 10
教 學(xué) 過(guò) 程教師 行為學(xué)生 行為教學(xué) 意圖時(shí)間 *揭示課題 7.1 平面向量的概念及線性運(yùn)算 *創(chuàng)設(shè)情境 興趣導(dǎo)入 如圖7-1所示,用100N①的力,按照不同的方向拉一輛車(chē),效果一樣嗎? 圖7-1 介紹 播放 課件 引導(dǎo) 分析 了解 觀看 課件 思考 自我 分析 從實(shí)例出發(fā)使學(xué)生自然的走向知識(shí)點(diǎn) 0 3*動(dòng)腦思考 探索新知 【新知識(shí)】 在數(shù)學(xué)與物理學(xué)中,有兩種量.只有大小,沒(méi)有方向的量叫做數(shù)量(標(biāo)量),例如質(zhì)量、時(shí)間、溫度、面積、密度等.既有大小,又有方向的量叫做向量(矢量),例如力、速度、位移等. 我們經(jīng)常用箭頭來(lái)表示方向,帶有方向的線段叫做有向線段.通常使用有向線段來(lái)表示向量.線段箭頭的指向表示向量的方向,線段的長(zhǎng)度表示向量的大?。鐖D7-2所示,有向線段的起點(diǎn)叫做平面向量的起點(diǎn),有向線段的終點(diǎn)叫做平面向量的終點(diǎn).以A為起點(diǎn),B為終點(diǎn)的向量記作.也可以使用小寫(xiě)英文字母,印刷用黑體表示,記作a;手寫(xiě)時(shí)應(yīng)在字母上面加箭頭,記作. 圖7-2 平面內(nèi)的有向線段表示的向量稱(chēng)為平面向量. 向量的大小叫做向量的模.向量a, 的模依次記作,. 模為零的向量叫做零向量.記作0,零向量的方向是不確定的. 模為1的向量叫做單位向量. 總結(jié) 歸納 仔細(xì) 分析 講解 關(guān)鍵 詞語(yǔ) 思考 理解 記憶 帶領(lǐng) 學(xué)生 分析 引導(dǎo) 式啟 發(fā)學(xué) 生得 出結(jié) 果 10
問(wèn)題1. 用一個(gè)大寫(xiě)的英文字母或一個(gè)阿拉伯?dāng)?shù)字給教室里的一個(gè)座位編號(hào),總共能編出多少種不同的號(hào)碼?因?yàn)橛⑽淖帜腹灿?6個(gè),阿拉伯?dāng)?shù)字共有10個(gè),所以總共可以編出26+10=36種不同的號(hào)碼.問(wèn)題2.你能說(shuō)說(shuō)這個(gè)問(wèn)題的特征嗎?上述計(jì)數(shù)過(guò)程的基本環(huán)節(jié)是:(1)確定分類(lèi)標(biāo)準(zhǔn),根據(jù)問(wèn)題條件分為字母號(hào)碼和數(shù)字號(hào)碼兩類(lèi);(2)分別計(jì)算各類(lèi)號(hào)碼的個(gè)數(shù);(3)各類(lèi)號(hào)碼的個(gè)數(shù)相加,得出所有號(hào)碼的個(gè)數(shù).你能舉出一些生活中類(lèi)似的例子嗎?一般地,有如下分類(lèi)加法計(jì)數(shù)原理:完成一件事,有兩類(lèi)辦法. 在第1類(lèi)辦法中有m種不同的方法,在第2類(lèi)方法中有n種不同的方法,則完成這件事共有:N= m+n種不同的方法.二、典例解析例1.在填寫(xiě)高考志愿時(shí),一名高中畢業(yè)生了解到,A,B兩所大學(xué)各有一些自己感興趣的強(qiáng)項(xiàng)專(zhuān)業(yè),如表,
(2) students are divided into groups according to the requirements of activity 3. Each student shares a story of personal experience or hearing-witnessing kindness, and then selects the most touching story in the group and shares it with the whole class. Before the students share the story, the teacher can instruct them to use the words and sentence patterns in the box to express. For example, the words in the box can be classified:Time order: first of all, then, after that, later, finally logical relationship :so, however, although, butTeachers can also appropriately add some transitional language to enrich students' expression:Afterwards, afterwards, at last, in the end, eventuallySpatial order: next to, far from, on the left, in front ofOtherwise, nevertheless, as a result, therefore, furthermore, in addition, as well asSummary: in a word, in short, on the whole, to sum up, in briefStep 8 Homework1. Understand the definition of "moral dilemma" and establish a correct moral view;2. Accumulate vocabulary about attitudes and emotions in listening texts and use them to express your own views;3. Complete relevant exercises in the guide plan.1、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否理解理解“道德困境”的定義;2、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否通過(guò)說(shuō)話人所表達(dá)的內(nèi)容、說(shuō)話的語(yǔ)氣、語(yǔ)調(diào)等來(lái)判斷其態(tài)度和情緒;3、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否針對(duì)具體的道德困境發(fā)表自己的看法和見(jiàn)解,能否掌握聽(tīng)力理訓(xùn)練中的聽(tīng)力策略。
【教學(xué)目標(biāo)】1. 理解數(shù)列的通項(xiàng)公式的意義,能根據(jù)通項(xiàng)公式寫(xiě)出數(shù)列的任意一項(xiàng),以及根據(jù)其前幾項(xiàng)寫(xiě)出它的一個(gè)通項(xiàng)公式.2. 了解數(shù)列的遞推公式,會(huì)根據(jù)數(shù)列的遞推公式寫(xiě)出前幾項(xiàng).3.培養(yǎng)學(xué)生積極參與、大膽探索的精神,培養(yǎng)學(xué)生的觀察、分析、歸納的能力.教學(xué)重點(diǎn) 數(shù)列的通項(xiàng)公式及其應(yīng)用.教學(xué)難點(diǎn) 根據(jù)數(shù)列的前幾項(xiàng)寫(xiě)出滿(mǎn)足條件的數(shù)列的一個(gè)通項(xiàng)公式.教學(xué)方法 本節(jié)課主要采用例題解決法.通過(guò)列舉實(shí)例,進(jìn)一步研究數(shù)列的項(xiàng)與序號(hào)之間的關(guān)系.通過(guò)三類(lèi)題目,使學(xué)生深刻理解數(shù)列通項(xiàng)公式的意義,為以后學(xué)習(xí)等差數(shù)列與等比數(shù)列打下基礎(chǔ).【教學(xué)過(guò)程】 環(huán)節(jié)教學(xué)內(nèi)容師生互動(dòng)設(shè)計(jì)意圖導(dǎo) 入⒈數(shù)列的定義 按一定次序排列的一列數(shù)叫做數(shù)列. 注意:(1)數(shù)列中的數(shù)是按一定次序排列的; (2)同一個(gè)數(shù)在數(shù)列中可以重復(fù)出現(xiàn). 2. 數(shù)列的一般形式 數(shù)列a1,a2,a3,…,an,…,可記作{ an }. 3. 數(shù)列的通項(xiàng)公式: 如果數(shù)列{ an }的第n項(xiàng)an與n之間的關(guān)系可以用一個(gè)公式來(lái)表示,那么這個(gè)公式就叫做這個(gè)數(shù)列的通項(xiàng)公式. 教師引導(dǎo)學(xué)生復(fù)習(xí). 為學(xué)生進(jìn)一步理解通項(xiàng)公式,應(yīng)用通項(xiàng)公式解決實(shí)際問(wèn)題做好準(zhǔn)備.
本板塊的活動(dòng)主題是“談?wù)摴?jié)日活動(dòng)”(Talk about festival activities),主要是從貼近學(xué)生日常生活的角度來(lái)切入“節(jié)日”主題。學(xué)生會(huì)聽(tīng)到發(fā)生在三個(gè)國(guó)家不同節(jié)日?qǐng)鼍跋碌暮?jiǎn)短對(duì)話,對(duì)話中的人們正在參與或?qū)⒁H歷不同的慶?;顒?dòng)。隨著全球化的進(jìn)程加速,國(guó)際交流日益頻繁,無(wú)論是國(guó)人走出國(guó)門(mén)還是外國(guó)友人訪問(wèn)中國(guó),都已成為司空見(jiàn)慣的事情。因此,該板塊所選取的三個(gè)典型節(jié)日?qǐng)鼍岸际菍儆诳缥幕浑H語(yǔ)境,不僅每組對(duì)話中的人物來(lái)自不同的文化背景,對(duì)話者的身份和關(guān)系也不盡相同。1. Master the new words related to holiday: the lantern, Carnival, costume, dress(sb)up, march, congratulation, congratulate, riddle, ceremony, samba, make - up, after all. 2. To understand the origin of major world festivals and the activities held to celebrate them and the significance of these activities;3. Improve listening comprehension and oral expression of the topic by listening and talking about traditional festivals around the world;4. Improve my understanding of the topic by watching pictures and videos about different traditional festivals around the world;5. Review the common assimilation phenomenon in English phonetics, can distinguish the assimilated phonemes in the natural language flow, and consciously use the assimilation skill in oral expression. Importance:1. Guide students to pay attention to the attitude of the speaker in the process of listening, and identify the relationship between the characters;2. Inspire students to use topic words to describe the festival activities based on their background knowledge. Difficulties:In the process of listening to the correct understanding of the speaker's attitude, accurately identify the relationship between the characters.
Activity 81.Grasp the main idea of the listening.Listen to the tape and answer the following questions:Who are the two speakers in the listening? What is their relationship?What is the main idea of the first part of the listening? How about the second part?2.Complete the passage.Ask the students to quickly review the summaries of the two listening materials in activity 2. Then play the recording for the second time.Ask them to complete the passage and fill in the blanks.3.Play the recording again and ask the students to use the structure diagram to comb the information structure in the listening.(While listening, take notes. Capture key information quickly and accurately.)Step 8 Talking Activity 91.Focus on the listening text.Listen to the students and listen to the tape. Let them understand the attitudes of Wu Yue and Justin in the conversation.How does Wu Yue feel about Chinese minority cultures?What does Justin think of the Miao and Dong cultures?How do you know that?2.learn functional items that express concerns.Ask students to focus on the expressions listed in activity. 3.And try to analyze the meaning they convey, including praise (Super!).Agree (Exactly!)"(You're kidding.!)Tell me more about it. Tell me more about it.For example, "Yeah Sure." "Definitely!" "Certainly!" "No kidding!" "No wonder!" and so on.4.Ask the students to have conversations in small groups, acting as Jsim and his friends.Justin shares his travels in Guizhou with friends and his thoughts;Justin's friends should give appropriate feedback, express their interest in relevant information, and ask for information when necessary.In order to enrich the dialogue, teachers can expand and supplement the introduction of Miao, dong, Lusheng and Dong Dage.After the group practice, the teacher can choose several groups of students to show, and let the rest of the students listen carefully, after listening to the best performance of the group, and give at least two reasons.
根據(jù)《中華人民共和國(guó)廣告法》,《中華人民共和國(guó)合同法》及國(guó)家有關(guān)法律、法規(guī)的規(guī)定,甲、乙雙方在平等、自愿、等價(jià)有償、誠(chéng)實(shí)守信的基礎(chǔ)上,本著雙方互惠互利、精誠(chéng)合作的原則,經(jīng)友好協(xié)商,就乙方委托甲方制作 新天地二期及苑南樓改造概念方案文本修改樣PPT文本 事宜達(dá)成以下協(xié)議:一、 項(xiàng)目概述1、 項(xiàng)目名稱(chēng): 2、 制作周期:始 年 月 日;止 年 月 日, 工作日3、 項(xiàng)目總金額:RMB(大寫(xiě)) 元 , ¥: 元二、 乙方負(fù)責(zé)提供修改文本(基礎(chǔ)圖由甲方提供)約57張圖。二、 甲方權(quán)利與義務(wù)1、 甲方需向乙方提供詳盡的背景資料,并為乙方測(cè)量現(xiàn)場(chǎng)提供方便。2、 甲方有權(quán)監(jiān)督乙方在設(shè)計(jì)制作中諸如設(shè)計(jì)方案、圖紙是否設(shè)計(jì)合理等工作。3、 甲方提供專(zhuān)人協(xié)調(diào)與乙方的工作并對(duì)整個(gè)項(xiàng)目有建議權(quán)和終審權(quán)。三、 乙方權(quán)利與義務(wù)1、 乙方應(yīng)完全按照甲方提供的資料來(lái)完成該項(xiàng)目,在甲方同意情況下乙方可跟據(jù)自己的經(jīng)驗(yàn)少作調(diào)整。 2、 乙方負(fù)責(zé)向甲方提供設(shè)計(jì)方案及最終效果圖。
Activity 41. Students complete the task of activity 4, then teachers and students check the answers. 2. The teacher organized the students to work together and asked them to use the tables and mind maps sorted out before to retold the important choices in Lin Qiaozhi's life and their resultsStep 5 Language points1. The teacher asks the students to read the text carefully, find out the core words and long and difficult sentences in the text and draw lines, understand the use of vocabulary, and analyze the structure of long and difficult sentences. 2. The teacher explains and summarizes the usage of core vocabulary and asks the students to take notes. 3. The teacher analyzes and explains the long and difficult sentences that the students don't understand, so that the students can understand them better. Step 6 Homework1. Read the text again, in-depth understanding of the text; 2. Master the use of core vocabulary and understand the long and difficult sentences. 3. Complete relevant exercises in the guide plan. 1、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握閱讀文本中的新詞匯的意義與用法;2、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否結(jié)合文本特點(diǎn)總結(jié)林巧稚的人生原則和人格品質(zhì)特征;3、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否針對(duì)人生抉擇發(fā)表自己的看法;能否全面地、客觀地、理性地看待問(wèn)題,進(jìn)而對(duì)道德和人性有更加深入的思考和理解。
The joke set her crying.這個(gè)玩笑使她哭起來(lái)。Step 5 ReadingActivity 31. Students read the small text in activity 3. The teacher provides several small questions to check whether students understand the content of the text and the ideographic function of the -ing form in the text.*Where are those people?*Why did Dr Bethune come to China?*How did he help the Chinese people during the war?*What did Chairman Mao Zedong say about him?2. Ss try to rewrite some sentences using the -ing form. Then check the answers. When checking the answers, the teacher can ask different students to read the rewritten sentences and give comments.Answers:1. he became very interested in medicine, deciding to become a doctor.2. …after hearing that many people were dying in the war.3. Helping to organise hospitals, he taught doctors and nurses, and showed people how to give first aid./ He helped to organise hospitals, teaching doctors and nurses, and showing people how to give first aid.4. …praising Dr Bethune as a hero to be remembered in China.Step 6 PracticeActivity 4Students complete grammar activities 2 and 3 on page 69 of the workbook.Step 6 Homework1. Understand and master the functions and usage of the -ing form;2. Finish the other exercises in Using structures.1、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握動(dòng)詞-ing形式作賓語(yǔ)補(bǔ)足語(yǔ)語(yǔ)和狀語(yǔ)語(yǔ)的功能和意義;2、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否正確使用動(dòng)詞-ing形式描述人物的行為、動(dòng)作及其經(jīng)歷;3、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否獨(dú)立完成練習(xí)冊(cè)和導(dǎo)學(xué)案中的相關(guān)練習(xí)。
3.Teachers ask different groups to report the answers to the questions and ask them to try different sentence patterns.The teacher added some sentence patterns for students to refer to when writing.Step 4 Writing taskActivity 51.Write the first draft.Students first review the evaluation criteria in activity 5, and then independently complete the draft according to the outline of activity 4, the answers to the questions listed in the group discussion and report, and the reference sentence pattern.2.Change partners.The teacher guides the students to evaluate their partner's composition according to the checklist of activity 5 and proposes Suggestions for modification.3.Finalize the draft.Based on the peer evaluation, students revise their own compositions and determine the final draft.Finally, through group recommendation, the teacher selects excellent compositions for projection display or reading aloud in class, and gives comments and Suggestions.Step 5 Showing writingActivity 5T call some Ss to share their writing.Step 6 Homework1. Read the passage in this section to better understand the passage.2. Carefully understand the hierarchical structure of the article, and deeply understand the plot of the story according to the causes, process and results;3. Independently complete the relevant exercises in the guide plan.1、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握閱讀文本中的新詞匯的意義與用法;2、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否通過(guò)人物言行的對(duì)比分析道德故事的深層內(nèi)涵;3、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否根據(jù)故事的起因、經(jīng)過(guò)和結(jié)果來(lái)深入理解故事的情節(jié),從而了解文章的層次結(jié)構(gòu);4、結(jié)合現(xiàn)實(shí)生活案例發(fā)表自己的見(jiàn)解和看法,寫(xiě)一篇觀點(diǎn)明確、層次分明的故事評(píng)論。
2.學(xué)情分析從學(xué)生的認(rèn)知基礎(chǔ)看,學(xué)生在初中已經(jīng)學(xué)習(xí)了軸對(duì)稱(chēng)圖形和中心對(duì)稱(chēng)圖形,并且有了一定數(shù)量的簡(jiǎn)單函數(shù)的儲(chǔ)備。同時(shí),剛剛學(xué)習(xí)了函數(shù)單調(diào)性,已經(jīng)積累了研究函數(shù)的基本方法與初步經(jīng)驗(yàn)。從學(xué)生的思維發(fā)展看,高一學(xué)生思維能力正在由形象經(jīng)驗(yàn)型向抽象理論型轉(zhuǎn)變,能夠用假設(shè)、推理來(lái)思考和解決問(wèn)題.
五、回顧總結(jié):總結(jié):1、投影、中心投影 2、如何確定光源(小組交流總結(jié).)六、自我檢測(cè):檢測(cè):晚上,小華在馬路的一側(cè)散步,對(duì)面有一路燈,當(dāng)小華筆直地往前走時(shí),他在這盞路燈下的影子也隨之向前移動(dòng).小華頭頂?shù)挠白铀?jīng)過(guò)的路徑是怎樣的?它與小華所走的路線有何位置關(guān)系?七、課后延伸:延伸:課本128頁(yè)習(xí)題5.1八、板書(shū)設(shè)計(jì)投影 做一做:投影線投影面 議一議:中心投影九、課后反思本節(jié)課先由皮影戲引出燈光與影子這個(gè)話題,接著經(jīng)歷實(shí)踐、探索的過(guò)程,掌握了中心投影的含義,進(jìn)一步根據(jù)燈光光線的特點(diǎn),由實(shí)物與影子來(lái)確定路燈的位置,能畫(huà)出在同一時(shí)刻另一物體的影子,還要求大家不僅要自己動(dòng)手實(shí)踐,還要和同伴互相交流.同時(shí)要用自己的語(yǔ)言加以描述,做到手、嘴、腦互相配合,培養(yǎng)大家的實(shí)踐操作能力,合作交流能力,語(yǔ)言表達(dá)能力.
課程:數(shù)學(xué)課題: 3.1.1函數(shù)的概念課型:講授課課時(shí):2課時(shí)授課班級(jí):2015級(jí)南口班授課時(shí)間:2016年3月1日授課地點(diǎn):南口校區(qū)教 學(xué) 目 標(biāo)知識(shí)目標(biāo)1.能用函數(shù)語(yǔ)言描述圖像、解析式中自變量與函數(shù)值的依賴(lài)關(guān)系; 2.會(huì)計(jì)算函數(shù)的定義域,理解值域的含義 3.會(huì)用語(yǔ)言表述自變量與函數(shù)值間的對(duì)應(yīng)關(guān)系能力目標(biāo)通過(guò)對(duì)實(shí)例的分析,培養(yǎng)學(xué)生的觀察能力,抽象概括及邏輯思維能力 通過(guò)計(jì)算函數(shù)的定義域,培養(yǎng)學(xué)生的計(jì)算能力素養(yǎng)目標(biāo)函數(shù)概念的思想蘊(yùn)含了很多數(shù)學(xué)思維,也滲透生活中及其他學(xué)科范圍內(nèi),通過(guò)學(xué)習(xí)使學(xué)生認(rèn)同函數(shù)的抽象性。教學(xué)重 點(diǎn)理解函數(shù)的概念教學(xué)難 點(diǎn)判斷兩個(gè)函數(shù)是否相同教學(xué)方 法引導(dǎo)啟發(fā),講練結(jié)合教學(xué)資 源演示文稿板 書(shū) 設(shè) 計(jì)3.1函數(shù)的概念 設(shè)集合A、B為非空數(shù)集,對(duì)于確定的對(duì) 應(yīng)法則f下,在集合A中取定任意一個(gè)數(shù)x, 在集合B中都有唯一確定的數(shù)f(x)與之相 對(duì)應(yīng),則稱(chēng)f:A→B為集合A到集合B的一 個(gè)函數(shù). 記作:y=f(x),x∈A X叫自變量,y叫函數(shù)值,集合A叫函數(shù)的 定義域,所有函數(shù)值組成的集合叫值域。
【課題】1.1 集合的概念【教學(xué)目標(biāo)】1、理解集合、元素的概念及其關(guān)系,掌握常用數(shù)集的字母表示;2、掌握集合的列舉法與描述法,會(huì)用適當(dāng)?shù)姆椒ū硎炯希?、通過(guò)集合語(yǔ)言的學(xué)習(xí)與運(yùn)用,培養(yǎng)分類(lèi)思維和有序思維,從而提升數(shù)學(xué)思維能力.4、接受集合語(yǔ)言,經(jīng)歷利用集合語(yǔ)言描述元素與集合間關(guān)系的過(guò)程,養(yǎng)成規(guī)范意識(shí),發(fā)展嚴(yán)謹(jǐn)?shù)淖黠L(fēng)。【教學(xué)重點(diǎn)】集合的表示法. 【教學(xué)難點(diǎn)】集合表示法的選擇與規(guī)范書(shū)寫(xiě).【教學(xué)設(shè)計(jì)】(1)通過(guò)生活中的實(shí)例導(dǎo)入集合與元素的概念;(2)引導(dǎo)學(xué)生自然地認(rèn)識(shí)集合與元素的關(guān)系;(3)針對(duì)集合不同情況,認(rèn)識(shí)到可以用列舉和描述兩種方法表示集合,然后再對(duì)表示法進(jìn)行對(duì)比分析,完成知識(shí)的升華;(4)通過(guò)練習(xí),鞏固知識(shí).(5)依照學(xué)生的認(rèn)知規(guī)律,順應(yīng)學(xué)生的學(xué)習(xí)思路展開(kāi),自然地層層推進(jìn)教學(xué).
課 程數(shù)學(xué)章節(jié)內(nèi)容5.1角的概念推廣課程類(lèi)型新課課時(shí)安排2課時(shí)指導(dǎo)教師 日期12月2 日學(xué)習(xí)目標(biāo)理解將角度從0°~360°推廣任意角。學(xué)習(xí)重點(diǎn)掌握角的度量、任意角學(xué)習(xí)難點(diǎn)理解象限角、界限角和終邊相同的角回顧(溫故知新)1、角度的概念:什么是角?始邊、終邊、頂點(diǎn)。 問(wèn)題(順著問(wèn)題找思路)1、正角.負(fù)角.零角.界限角和第幾象限的角概念?按照逆時(shí)針?lè)较蛐D(zhuǎn)所形成的角叫做________,按照_____時(shí)針旋轉(zhuǎn)所形成的角叫負(fù)角。當(dāng)射線沒(méi)有作任何旋轉(zhuǎn)時(shí),形成的角叫________(結(jié)合圖形講解) 2、在坐標(biāo)系中依次表示390°、30°、-330°,觀察圖像,探討終邊相等的角的特點(diǎn)、有什么關(guān)系?思考如何用集合表示終邊相等的角度?
1. Ss look at the picture and scan the passage to understand the main idea while teacher is giving the following questions to inspire Ss to think.*Where are those people?*What are they doing?*Why are they so excited?2. Ss complete the passage with the appropriate -ing form. Then discuss and check the answers with class.Answers: boring, interesting, taking, exciting, amazing3. The teacher raises questions for the students to discuss and encourages them to express their opinions.*Do you like La Tomatina? Why or why not?4. Each group representative reports the discussion result, the teacher gives feedback and the evaluation.Step 6 PracticeActivity 41. Ss complete the Ex 2 in Using structures.2. Check the answers after finishing the exercises.①The dragon boat races are the most exciting part of the Dragon Boat Festival.② The children were excited to go Easter egg hunting.③What an amazing performance! This is the best music festival I have ever been to.④We were amazed by her funny-looking hat.⑤His inspiring speech at the conference won the admiration/ favour of the audience.⑥This is a challenging game to test your memory and observation capabilities. 3. T asks Ss to finish Ex 3 and 4 in Using structures by themselves, then check the answers with class.Step 6 Homework1. Understand and master the functions and usage of the -ing form;2. Finish the other exercises in Using structures.1、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握動(dòng)詞-ing形式作定語(yǔ)和表語(yǔ)的功能和意義;2、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否在理解文段內(nèi)容的基礎(chǔ)上,根據(jù)上下文語(yǔ)境和表達(dá)邏輯,能正確運(yùn)用動(dòng)詞-ing形式描述節(jié)日慶典。3、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否歸納和積累用于表達(dá)情緒的相關(guān)詞匯。
*wide range of origins(= a great number of different origins, many kinds of origins)*It featured a parade and a great feast with music, dancing, and sports. (=A parade and a great feast with music, dancing, and sports were included as important parts of the Egyptian harvest festival.)*.. some traditions may fade away and others may be established.(= Some traditions may disappear gradually, while other new traditions may come into being.)Step 6 Practice(1) Listen and follow the tape.The teacher may remind the students to pay attention to the meaning and usage of the black words in the context, so as to prepare for the completion of the blanks in activity 5 and vocabulary exercises in the exercise book.(2) Students complete the text of activity 5 by themselves.The teacher needs to remind the students to fill in the blanks with the correct form of the vocabulary they have learned in the text.Students exchange their answers with their partners, and then teachers and students check their answers.(3)Finish the Ex in Activity 5 of students’ book.Step 7 Homework1. Read the text again, in-depth understanding of the text;2. Discuss the origin of festivals, the historical changes of related customs, the influence of commercial society on festivals and the connotation and essential meaning of festivals.3. Complete relevant exercises in the guide plan.1、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握閱讀文本中的新詞匯的意義與用法;2、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否結(jié)合文本特點(diǎn)快速而準(zhǔn)確地找到主題句;3、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否理清論說(shuō)文的語(yǔ)篇結(jié)構(gòu)和文本邏輯,了解節(jié)日風(fēng)俗發(fā)展與變遷,感悟節(jié)日的內(nèi)涵與意義。
The price is the same as(the price was)before the war.價(jià)格與戰(zhàn)前相同。(4)定語(yǔ)從句中的“關(guān)系代詞+助動(dòng)詞be”可以省略。The ticket(that/which was)booked by his sister has been sent to him.他妹妹訂的那張票已送到了他那里。Step 5 PracticeActivity 3(1) Guide students to complete the four activities in the Using Structures part of exercise book, in which activities 1 and 2 focus on ellipsis in dialogue answers, activity 3 focus on signs and headlines, two typical situations where ellipsis is used, and activity 4 focus on ellipsis in diary, an informal style.(2) Combine the examples in the above activities, ask students to summarize the omitted situations in groups, and make their own summary into a poster, and post it on the class wall after class to share with the class.(This step should give full play to the subjectivity of students, and teachers should encourage students to conclude different ellipsis phenomena according to their own understanding, they can conclude according to the different parts omitted in the sentence.)Step 6 Homework1. Understand and master the usages of ellipsis;2. Finish the other exercises in Using structures of Workbook.1、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握省略的用法;2、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否根據(jù)上下文語(yǔ)境或情景恢復(fù)句子中省略的成分,體會(huì)使用省略的效果;3、通過(guò)本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否獨(dú)立完成練習(xí)冊(cè)和導(dǎo)學(xué)案中的相關(guān)練習(xí)。