
本節(jié)主要內(nèi)容是三角函數(shù)的誘導(dǎo)公式中的公式二至公式六,其推導(dǎo)過程中涉及到對稱變換,充分體現(xiàn)對稱變換思想在數(shù)學(xué)中的應(yīng)用,在練習(xí)中加以應(yīng)用,讓學(xué)生進(jìn)一步體會 的任意性;綜合六組誘導(dǎo)公式總結(jié)出記憶誘導(dǎo)公式的口訣:“奇變偶不變,符號看象限”,了解從特殊到一般的數(shù)學(xué)思想的探究過程,培養(yǎng)學(xué)生用聯(lián)系、變化的辯證唯物主義觀點去分析問題的能力。誘導(dǎo)公式在三角函數(shù)化簡、求值中具有非常重要的工具作用,要求學(xué)生能熟練的掌握和應(yīng)用。課程目標(biāo)1.借助單位圓,推導(dǎo)出正弦、余弦第二、三、四、五、六組的誘導(dǎo)公式,能正確運用誘導(dǎo)公式將任意角的三角函數(shù)化為銳角的三角函數(shù),并解決有關(guān)三角函數(shù)求值、化簡和恒等式證明問題2.通過公式的應(yīng)用,了解未知到已知、復(fù)雜到簡單的轉(zhuǎn)化過程,培養(yǎng)學(xué)生的化歸思想,以及信息加工能力、運算推理能力、分析問題和解決問題的能力。

一、復(fù)習(xí)回顧,溫故知新1. 任意角三角函數(shù)的定義【答案】設(shè)角 它的終邊與單位圓交于點 。那么(1) (2) 2.誘導(dǎo)公式一 ,其中, 。終邊相同的角的同一三角函數(shù)值相等二、探索新知思考1:(1).終邊相同的角的同一三角函數(shù)值有什么關(guān)系?【答案】相等(2).角 -α與α的終邊 有何位置關(guān)系?【答案】終邊關(guān)于x軸對稱(3).角 與α的終邊 有何位置關(guān)系?【答案】終邊關(guān)于y軸對稱(4).角 與α的終邊 有何位置關(guān)系?【答案】終邊關(guān)于原點對稱思考2: 已知任意角α的終邊與單位圓相交于點P(x, y),請同學(xué)們思考回答點P關(guān)于原點、x軸、y軸對稱的三個點的坐標(biāo)是什么?【答案】點P(x, y)關(guān)于原點對稱點P1(-x, -y)點P(x, y)關(guān)于x軸對稱點P2(x, -y) 點P(x, y)關(guān)于y軸對稱點P3(-x, y)

冪函數(shù)是在繼一次函數(shù)、反比例函數(shù)、二次函數(shù)之后,又學(xué)習(xí)了單調(diào)性、最值、奇偶性的基礎(chǔ)上,借助實例,總結(jié)出冪函數(shù)的概念,再借助圖像研究冪函數(shù)的性質(zhì).課程目標(biāo)1、理解冪函數(shù)的概念,會畫冪函數(shù)y=x,y=x2,y=x3,y=x-1,y=x 的圖象;2、結(jié)合這幾個冪函數(shù)的圖象,理解冪函數(shù)圖象的變化情況和性質(zhì);3、通過觀察、總結(jié)冪函數(shù)的性質(zhì),培養(yǎng)學(xué)生概括抽象和識圖能力.?dāng)?shù)學(xué)學(xué)科素養(yǎng)1.數(shù)學(xué)抽象:用數(shù)學(xué)語言表示函數(shù)冪函數(shù);2.邏輯推理:常見冪函數(shù)的性質(zhì);3.數(shù)學(xué)運算:利用冪函數(shù)的概念求參數(shù);4.數(shù)據(jù)分析:比較冪函數(shù)大??;5.數(shù)學(xué)建模:在具體問題情境中,運用數(shù)形結(jié)合思想,利用冪函數(shù)性質(zhì)、圖像特點解決實際問題。重點:常見冪函數(shù)的概念、圖象和性質(zhì);難點:冪函數(shù)的單調(diào)性及比較兩個冪值的大?。?/p>

對數(shù)與指數(shù)是相通的,本節(jié)在已經(jīng)學(xué)習(xí)指數(shù)的基礎(chǔ)上通過實例總結(jié)歸納對數(shù)的概念,通過對數(shù)的性質(zhì)和恒等式解決一些與對數(shù)有關(guān)的問題.課程目標(biāo)1、理解對數(shù)的概念以及對數(shù)的基本性質(zhì);2、掌握對數(shù)式與指數(shù)式的相互轉(zhuǎn)化;數(shù)學(xué)學(xué)科素養(yǎng)1.數(shù)學(xué)抽象:對數(shù)的概念;2.邏輯推理:推導(dǎo)對數(shù)性質(zhì);3.數(shù)學(xué)運算:用對數(shù)的基本性質(zhì)與對數(shù)恒等式求值;4.數(shù)學(xué)建模:通過與指數(shù)式的比較,引出對數(shù)定義與性質(zhì).重點:對數(shù)式與指數(shù)式的互化以及對數(shù)性質(zhì);難點:推導(dǎo)對數(shù)性質(zhì).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)入已知中國的人口數(shù)y和年頭x滿足關(guān)系 中,若知年頭數(shù)則能算出相應(yīng)的人口總數(shù)。反之,如果問“哪一年的人口數(shù)可達(dá)到18億,20億,30億......”,該如何解決?要求:讓學(xué)生自由發(fā)言,教師不做判斷。而是引導(dǎo)學(xué)生進(jìn)一步觀察.研探.

例7 用描述法表示拋物線y=x2+1上的點構(gòu)成的集合.【答案】見解析 【解析】 拋物線y=x2+1上的點構(gòu)成的集合可表示為:{(x,y)|y=x2+1}.變式1.[變條件,變設(shè)問]本題中點的集合若改為“{x|y=x2+1}”,則集合中的元素是什么?【答案】見解析 【解析】集合{x|y=x2+1}的代表元素是x,且x∈R,所以{x|y=x2+1}中的元素是全體實數(shù).變式2.[變條件,變設(shè)問]本題中點的集合若改為“{y|y=x2+1}”,則集合中的元素是什么?【答案】見解析 【解析】集合{ y| y=x2+1}的代表元素是y,滿足條件y=x2+1的y的取值范圍是y≥1,所以{ y| y=x2+1}={ y| y≥1},所以集合中的元素是大于等于1的全體實數(shù).解題技巧(認(rèn)識集合含義的2個步驟)一看代表元素,是數(shù)集還是點集,二看元素滿足什么條件即有什么公共特性。

佛山石灣陶瓷發(fā)展歷史悠久,為了讓幼兒感受這張靚麗的歷史“名片”的魅力,了解石灣陶瓷栩栩如生的形象和一道道制作工序,在幼兒自己動手制作的過程中掌握簡單的制作方法,體驗成功感并領(lǐng)略石灣陶瓷的藝術(shù)美。

為幼兒提供各種材料,為幼兒的創(chuàng)造提供了更為寬泛的創(chuàng)造空間,孩子們通過動手、動腦,對創(chuàng)造產(chǎn)生了濃厚的興趣。并給孩子一個自由、安全、寬松的環(huán)境,使孩子們能在這樣的環(huán)境中“發(fā)現(xiàn)”和“探索”。利用情境式的動畫效果,更使幼兒充滿嘗試和描繪的愿望?;顒幽繕?biāo):初步引導(dǎo)幼兒學(xué)用各種材料和間隔的方法在圓圈內(nèi)裝飾。嘗試用自己喜歡的材料、顏色和圖案,大膽想象為小動物的汽車裝配上美麗的輪胎?;顒訙?zhǔn)備:廢舊光盤、瓦楞紙、鉛化紙、蠟光紙、回形針、橡皮泥、瓜子粒、油畫棒、水彩筆若干等。范例:畫好的車輛、三只輪胎、花鴨先生及汽車圖片。

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、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握動詞-ing形式作定語和表語的功能和意義;2、通過本節(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)上下文語境和表達(dá)邏輯,能正確運用動詞-ing形式描述節(jié)日慶典。3、通過本節(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。

本板塊的活動主題是“談?wù)摴?jié)日活動”(Talk about festival activities),主要是從貼近學(xué)生日常生活的角度來切入“節(jié)日”主題。學(xué)生會聽到發(fā)生在三個國家不同節(jié)日場景下的簡短對話,對話中的人們正在參與或?qū)⒁H歷不同的慶祝活動。隨著全球化的進(jìn)程加速,國際交流日益頻繁,無論是國人走出國門還是外國友人訪問中國,都已成為司空見慣的事情。因此,該板塊所選取的三個典型節(jié)日場景都是屬于跨文化交際語境,不僅每組對話中的人物來自不同的文化背景,對話者的身份和關(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.

*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、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否結(jié)合文本特點快速而準(zhǔn)確地找到主題句;3、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否理清論說文的語篇結(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 joke set her crying.這個玩笑使她哭起來。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、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生是否理解和掌握動詞-ing形式作賓語補足語語和狀語語的功能和意義;2、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否正確使用動詞-ing形式描述人物的行為、動作及其經(jīng)歷;3、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否獨立完成練習(xí)冊和導(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、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否通過人物言行的對比分析道德故事的深層內(nèi)涵;3、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否根據(jù)故事的起因、經(jīng)過和結(jié)果來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)實生活案例發(fā)表自己的見解和看法,寫一篇觀點明確、層次分明的故事評論。

(2)Consolidate key vocabulary.Ask the students to complete the exercises of activity 6 by themselves. Then ask them to check the answers with their partners.(The first language:Damage of the 1906 San Francisco earthquake and fire.A second language: Yunnan - one of the most diverse provinces in China).Step 5 Language points1. The teacher asks the students to read the text carefully, find out the more 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、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否結(jié)合文本特點了解文章的結(jié)構(gòu)和作者的寫作邏輯;3、通過本節(jié)內(nèi)容學(xué)習(xí),學(xué)生能否了解舊金山的城市風(fēng)貌、文化特色,以及加利福尼亞州的歷史,體會多元文化對美國的影響。

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.

【詞匯精講】highlight n.最好或最精彩的部分 vt.突出;強調(diào);使醒目One of the highlights of the trip was seeing the Taj Mahal.這次旅行的亮點之一是參觀泰姬陵。Your resume should highlight your skills and achievements.你的簡歷應(yīng)該突出你的技能和成就。The report highlights the major problems facing society today.報告強調(diào)了當(dāng)今社會所面臨的主要問題。I’ve highlighted the important passages in yellow.我用黃色標(biāo)出了重要段落。7.Edmonton is freezing cold in winter,with daily temperatures averaging -10 ℃.埃德蒙頓冬季寒冷,日平均氣溫為-10°C。【詞匯精講】freezing adj.極冷的;冰凍的Leave a basin of water outside in freezing weather.在冰凍的天氣里,放一盆水在室外。It’s freezing cold outside so wear a warm coat.外面超冷的,所以穿一個暖和一點的外套吧。8.It was not until 9:30 a.m.that they finally reached the capital of Ontario,Toronto.直到上午9時30分,他們才終于到達(dá)多倫多的首府安大略省?!揪涫狡饰觥勘揪涫且粋€強調(diào)句,強調(diào)的是句子的時間狀語until 9:30。含有not...until...的句子的強調(diào)句為It is not until...that...,that后面的句子要用肯定形式。It was not until then that I suddenly realized nobody was happier than I was.直到那時我才突然意識到?jīng)]有人比我更幸福了。

The activity theme of this section is to design various activities around the key words in the first text. Therefore, the activities require students to pay attention to the spelling of words. On the other hand, let students grasp the meaning of words more accurately through sentences and short texts. This kind of teaching design also helps to improve the ability of using English thinking.1. Cultivating students' ability to use word formation to induce and memorize vocabulary, and the ability to use lexical chunks to express meaning.2. Guide the students to think independently and use the correct form of words to complete sentences3. Cultivate students' habit of using lexical chunks to express language completely, guide students to draw words in sentences quickly, pay attention to word collocation, so as to accumulate more authentic expressions4. Instruct students to create sentences with the chunks.1. Enable students to use the language points in the real situation or specific contexts flexibly and appropriately.2. Guiding the Ss to use unit topic words and the sentence patterns in a richer context.Step1: Think of a word that best fits each definition.1. to remember sth2.to accept, admit, or recognize sth or the truth/existence of sth3. the process of changing sth or yourself to suit a new situation4 .to make sb feel less worried or unhappy5. a strong desire to achieve sth

The theme of this part is to write an article about healthy diet. Through reading and writing activities, students can accumulate knowledge about healthy diet, deepen their understanding of the theme of healthy diet, and reflect on their own eating habits. This text describes the basic principles of healthy diet. The author uses data analysis, definition, comparison, examples and other methods. It also provides a demonstration of the use of conjunctions, which provides important information reference for students to complete the next collaborative task, writing skills, vivid language materials and expressions.1. Teach Ss to learn and skillfully use the new words learned from the text.2. Develop students’ ability to understand, extract and summarize information.3. Guide students to understand the theme of healthy diet and reflect on their own eating habits.4. To guide students to analyze and understand the reading discourse from the aspects of theme content, writing structure, language expression, etc., 5. Enable Ss to write in combination with relevant topics and opinions, and to talk about their eating habits.1. Guide students to analyze and understand the reading discourse from the aspects of theme content, writing structure, language expression, etc.2. Enable them to write in combination with relevant topics and opinions, and to talk about their eating habits.3. Guide the students to use the cohesive words correctly, strengthen the textual cohesion, and make the expression fluent and the thinking clear.Step1: Warming upbrainstorm some healthy eating habits.1.Eat slowly.2.Don’t eat too much fat or sugar.3.Eat healthy food.4.Have a balanced diet.Step2: Read the passage and then sum up the main idea of each paragraph.

This section guides students to pay attention to the typical context of vocabulary use, helps students accumulate vocabulary around the key vocabulary of this unit, and uses the learned words and word chunks in different contexts to deeply understand their meaning and usage, so as to achieve the purpose of review and consolidation.The teaching design activities aim to guide students to pay attention to the typical context in which the target vocabulary is used, as well as the common vocabulary used in collocation, so that students can complete the sentence with correct words. In terms of vocabulary learning strategies, this unit focuses on cultivating students' ability to pay attention to collocation of words and to use word blocks to express meaning.For vocabulary learning, it is not enough just to know the meaning of a single word, but the most important thing is to master the common collocations of words, namely word blocks.Teachers should timely guide students to summarize common vocabulary collocation, such as verb and noun collocation, verb and preposition collocation, preposition and noun collocation, and so on.1. Guide students to understand and consolidate the meaning and usage of the vocabulary in the context, 2. Guide the students to use the unit topic vocabulary in a richer context3. Let the students sort out and accumulate the accumulated vocabulary, establishes the semantic connection between the vocabulary,4. Enable students to understand and master the vocabulary more effectivelyGuiding the Ss to use unit topic words and the sentence patterns in a richer context.

The theme of the listening section is " talking about scenery and culture along a journey."The part is designed to further lead the students to understand Canadian natural geography and social environment, and integrated into the cultural contrast by mentioning the long train journey from Beijing to Moscow routes. On this basis, the part activates students related travel experience, lets the student serial dialogue, guides the student to explore further the pleasure and meaning of the long journey, and Chinese and foreign cultural comparison.The part also provides a framework for the continuation of the dialogue, which is designed to provide a framework for students to successfully complete their oral expressions, and to incorporate an important trading strategy to end the dialogue naturally.1. Help students to understand and master some common English idioms in the context, and experience the expression effect of English idioms.2. Guide the students to understand the identity of different people in the listening context, and finish the dialogue according to their own experience.3. Instruct the students to use appropriate language to express surprise and curiosity about space and place in the dialogue, and master the oral strategy of ending the dialogue naturally.1. Instruct students to grasp the key information and important details of the dialogue.2. Instruct students to conduct a similar talk on the relevant topic.

The theme of this activity is to learn the first aid knowledge of burns. Burns is common in life, but there are some misunderstandings in manual treatment. This activity provides students with correct first aid methods, so as not to take them for granted in an emergency. This section guides students to analyze the causes of scald and help students avoid such things. From the perspective of text structure and collaborative features, the text is expository. Expository, with explanation as the main way of expression, transmits knowledge and information to readers by analyzing concepts and elaborating examples. This text arranges the information in logical order, clearly presents three parts of the content through the subtitle, accurately describes the causes, types, characteristics and first aid measures of burns, and some paragraphs use topic sentences to summarize the main idea, and the level is very clear.1. Guide students to understand the causes, types, characteristics and first aid methods of burns, through reading2. Enhance students’ ability to deal withburnss and their awareness of burns prevention3. Enable students to improve the ability to judge the types of texts accurately and to master the characteristics and writing techniques of expository texts.Guide students to understand the causes, types, characteristics and first aid methods of burns, through readingStep1: Lead in by discussing the related topic:1. What first-aid techniques do you know of ?CPR; mouth to mouth artificial respiration; the Heimlich Manoeuvre
PPT全稱是PowerPoint,LFPPT為你提供免費PPT模板下載資源。讓你10秒輕松搞定幻燈片制作,打造?顏值的豐富演示文稿素材模版合集。