初中英语外研版（2024）八年级下册（2024））Starting out课堂教学课件ppt

这是一份初中英语外研版（2024）八年级下册（2024））Starting out课堂教学课件ppt，共55页。PPT课件主要包含了Three ，Time Span，Evaluation等内容，欢迎下载使用。
What can yu see in the picture?I can see a man in a desert at night.He is hlding a flashlight. I can als see cuntless stars in the sky.What d yu think the man is ding?Maybe he is watching the stars.What des the picture make yu feel?peaceful,vast(辽阔无垠的), calming...
Lk and say.
What are yu ging t learn in this unit?
discveries in nature
unslved secrets f nature
spirit f nature explratin
Unit task:Yu will make a pster abut an achievement in nature explratin. It will include “Title f the pster”and fllwing language tips:★What is it? ★Wh made it? ★Why is it imprtant?★What spirit is needed t realise it ?Please use the wrds and expressins we will learn in the unit, and remember drawings r phts t make yur pster lk better.Vte n the best 3 psters and best three prestatins.
【设计意图】介绍单元任务，让学生清晰目标导向，增强学习方向感与主动性。
1. What d yu knw abut these peple?
Li Shizhen was a famus dctr in the Ming Dynasty. He wrte Benca Gangmu,a classic bk abut traditinal Chinese medicine.
Charles Darwin was a famus British bilgist. He came up with the thery f evlutin（进化论） and explained hw life changes thrughut histry.
Wang Zhenyi was a well-knwn female scientist in the Qing Dynasty. She studied maths and astrnmy（天文学）, and she made imprtant cntributins.
Starting ut
Lk at the pictures and answer the questins.
Backgrund IntrductinLi Shizhen Li Shizhen was a famus medical scientist and pharmaclgist（药理学家） in the Ming Dynasty. T write his great wrk Ben Ca Gang Mu, he spent 27 years traveling acrss muntains and rivers.He tasted hundreds f herbs（草药） and studied the features f medicines in persn.He crrected many mistakes made by earlier schlars. Ben Ca Gang Mu is hnred as the "Great Eastern Medical Encyclpedia".It laid a slid fundatin fr the study f medicine and btany (植物学)in later generatins.
【设计意图】此处给出三个人物更具体的介绍，帮助学生了解更详细的背景知识。在介绍语篇中，提供和语篇相关的拓展词汇。供有能力的学生学习。的个人背景信息。
Backgrund IntrductinCharles Darwin Charles Darwin was a British bilgist and the funder f the thery f evlutin(进化论).He went n a five-year glbal vyage（航行）.During the vyage, he bserved and cllected plants, animals, and gelgical samples.After careful analysis, he develped the cncept f bilgical evlutin.In 1859, he published his famus bk On the Origin f Species（物种起源）.
Backgrund IntrductinWang Zhenyi Wang Zhenyi was a female astrnmer and mathematician in the Qing Dynasty.She learned a great deal thrugh her wn experiments and lng-term bservatins.Her studies cvered astrnmy, mathematics, meterlgy（气象学）, and gegraphy.Her wrks, such as Explanatin f Lunar Eclipses（《月食解》） and On the Spherical Earth（《地圆论》）, strngly criticized the flat-earth idea and feudal superstitins f her time.She made an imprtant cntributin t spreading scientific knwledge and prmting idelgical prgress.
Lk at the pictures and match.
came up with the thery f evlutin
made cntributins in maths and astrnmy
a famus British bilgist
a famus dctr in the Ming Dynasty
a well-knwn female scientist in the Qing Dynasty
2. What d they have in cmmn?
They all studied nature. They taught ther peple abut nature, t.
Vcabulary bank : scientist, explrer, curius，perseverance...
Deep Thinking:First, they all did a lt f practical research fr a lng time.Secnd, they all made great cntributins t their fields.Third, their wrk helped the develpment f related fields.
1. What secrets f nature d yu knw?
Lk at the picture and answer the questins.
Watch the vide and fill in the frm.
What secrets f nature are mentined in the vide?
What lives in the deepest parts f the cean?
Is there life amng the stars?
Why d we sleep?
Which ne d yu want t explre mre?
What lives in the ________ parts f the cean?
Is there _____ amng the stars?
Why d we _______?
Describe in 3-5 sentences the scientist yu are mst interested in and cllect infrmatin abut a natural mystery and write a brief intrductin in English.
Understanding ideas(1) : Reading
Unit 5 Lking int nature
这是一篇科普说明文，围绕 “琥珀作为‘时间胶囊’揭示自然秘密” 的主题，介绍了琥珀的三大科学价值：修正认知：东南亚琥珀中的恐龙羽毛，推翻了 “恐龙像蜥蜴” 的传统认知；记录物种：北欧琥珀中的花朵，证明 3500 万年前存在如今已灭绝的物种；发现新物种：非洲琥珀中的 13 只蚂蚁，是全新物种，改变了 “蚂蚁起源于北半球” 的旧有观点。语篇通过琥珀的科学发现，传递 “自然是人类认知世界的‘窗口’，探索自然需要持续的努力与好奇心” 的核心观点，体现 “科学探索推动认知进步” 的价值导向。
本语篇具有信息传递功能：向读者介绍通过琥珀获得的自然发现；纠正大众对恐龙、物种历史的错误认知，强调科学证据的重要性；语篇激发读者对自然探索的兴趣，呼吁 “投入更多努力研究琥珀，解锁更多自然秘密”。语篇通过具体的科学案例（恐龙羽毛、灭绝花朵、新蚂蚁物种），让读者理解 “琥珀是研究地球历史的‘钥匙’”，同时传递 “科学认知是动态发展的，新发现会不断推翻旧观点” 的科学思维。
（1）语篇采用 “总 - 分 - 总”+“案例递进”的结构：引入（Para 1-2）：以 “恐龙有羽毛” 的反差场景切入，用 “琥珀中的恐龙尾巴” 案例，推翻 “恐龙像蜥蜴” 的传统认知；分述（Para 3-4）：并列介绍两个案例（北欧琥珀的花朵、非洲琥珀的蚂蚁），说明琥珀记录物种、发现新物种的价值；总结（Para 5）：升华主题，点明琥珀是 “过去的窗口”，呼吁持续研究以解锁更多自然秘密。（2）语篇展示出一些学术性的词汇：：如species（物种）、research（研究）、unknwn（未知的），体现科普说明文的严谨性；也使用了一些 比喻性词汇：用a windw n the past、key t unlck secrets，将抽象的 “琥珀价值” 具象化，增强可读性。语篇的句式中大量使用宾语从句（believe that...），既符合单元语法目标，也体现 “科学结论的陈述”；也使用了说明文语篇常见的逻辑连接词：如 hwever（转折）、thanks t（因果）等串联案例与观点，强化语篇的逻辑性。在语篇衔接中，以 “琥珀的功能” 为线索，通过 “nt nly... but als...”“fr example”“then” 等衔接手段，将三个案例有机串联，使内容层层递进。
一、根据句意、音标或所给单词的提示，用单词的正确形式填空。 Scientists discvered a feather-cvered dinsaur tail in 1. ________ /'æmbə/ , prving dinsaurs were nt like 2. ________(lizard). Amber can help us understand that life n earth has always changed. Thanks t it, mre than 300 unknwn 3. ________ /'spiːʃiːz/have been discvered. The discvery f 4. ________ /'æfrɪkən/ants changed ld 5. ________ (belief) abut the histry f ants. Amber is nt fully understd, s we can use this key t 6. ________ /ˌʌnˈlɒk / mre secrets f nature.
1. What are they?2. Where can yu see them?
3. Why d peple study them?
They are dinsaur fssils. / ˈfɒs(ə)ls /
In the museum.
T learn mre abut dinsaurs and the past.
What ther things can tell us abut the past?
Lk at the pictures and answer.
1. What are they?2. What can yu see in them?
sme feathers
glden stnes
Understanding ideas
Lk at the title and the pictures. What is the passage abut? Use the wrd clud t help yu.
What d yu remember abut amber frm Chinese class?
《琥珀》 这个故事发生在很久很久以前，约莫算来，总有几千万年了。 一个夏日，太阳暖暖地照着，海在很远的地方翻腾怒吼，绿叶在树上飒飒地响。一只小苍蝇展开柔嫩的绿翅膀，在阳光下快乐地飞舞。它嗡嗡地穿过草地，飞进树林。那里长着许多高大的松树，太阳照得火热，可以闻到一股松脂的香味。 那只小苍蝇停在一棵大松树上。它伸起腿来掸掸翅膀，拂拭那长着一对红眼睛的圆脑袋。它飞了大半天，身上已经沾满了灰尘。 忽然，有个蜘蛛慢慢爬过来，想把那只苍蝇当作一顿美餐。它小心地划动长长的腿，沿着树干向下爬，离小苍蝇越来越近了。 晌午的太阳热辣辣地照射着整个树林。许多老松树渗出厚厚的松脂，松脂在太阳光里闪闪地发出金黄的光。 蜘蛛刚扑过去，突然发生了一件可怕的事情。一大滴松脂从树上滴下来，刚好落在树干上，把苍蝇和蜘蛛一齐包在里头。 小苍蝇不能掸翅膀了，蜘蛛也不能再想什么美餐了。两只小虫都淹没在老松树黄色的泪珠里。它们前俯后仰地挣扎了一番，终于不动了。 松脂继续滴下来，盖住了原来的，最后积成一个松脂球，把两只小虫重重包裹在里面。 几万年，几十万年，几百万年，时间一转眼就过去了。成千上万只绿翅膀的苍蝇和八只脚的蜘蛛来了又去了。谁也不会想到很久很久以前，有两只小虫被埋在一个松脂球里，挂在一棵老松树上。 后来，陆地渐渐沉下去，海水渐渐漫上来，逼近那古老的森林。有一天，水把森林淹没了，波浪不断冲刷着树干，甚至把树连根拔起。树断绝了生机，慢慢地腐烂了，剩下的只有那些松脂球，淹没在泥沙下面。 又是几百万年过去了，那些松脂球成了化石。 海风猛烈地吹，澎湃的波涛把海里的泥沙卷到岸边。有个渔民带着儿子走过海滩。那孩子赤着脚，他踩着了沙里一块硬东西，就把它挖了出来。 “爸爸，你看！”他快活地叫起来，“这是什么？”他爸爸接过来，仔细看了看。 “这是琥珀，孩子。”他高兴地说，“有两个小东西关在里面呢，一只苍蝇，一个蜘蛛。这是很少见的。” 在那块透明的琥珀里，两个小东西仍旧好好地躺着。我们可以看见它们身上的每一根毫毛，还可以想象它们当时在黏稠的松脂里怎样挣扎，因为它们的腿的四周显出好几圈黑色的圆环。从那块琥珀，我们可以推测发生在几千万年前的故事的详细情形，并且可以知道，在远古时代，世界上就已经有苍蝇和蜘蛛了。（本文作者是德国的柏吉尔，译者顾均正，选作课文时有改动。）
与语文课文中的《琥珀》比较：跨学科学习（阅读前）
What is the passage abut?
The passage is abut hw amber helps scientists unlck the secrets f nature. It serves as a windw n the past and leads t imprtant discveries. It als shws hw life has changed ver time, ffering a key t understanding the histry f species.
Read the passage and check yur answer
Skim and check.
【设计意图】引导学生利用“跳读”的阅读策略来获取文章大意，并核实读前预测的准确与否，让学生对整个语篇内容有全面的了解。
A. Hw amber helps scientists unlck the secrets f nature.B. Hw t make amber and use it in daily life.C. Hw amber came int being.
Scan and answer.
The secret abut the dinsaur
The secret abut the flwer
The secret abut the ants
Hw many secrets are mentined in the passage? What are they?
A dinsaur tail with feathers.
In Sutheast Asia.
Dinsaurs had feathers.
What dinsaurs lked like.
Read Paragraphs 1–4 and fill in the frm.
In Nrthern Eurpe.
The flwer grew there 35 millin years ag.
Life n earth has always changed.
【设计意图】引导学生根据第3段的内容，对琥珀中花朵的秘密进行梳理。
The ants are a cmpletely new species. Ants did nt nly cme frm the nrthern half f the earth; they als lived in Africa.
There are many unknwn species fr us t discver.
三、根据课文内容选择最佳选项。3. What can we learn frm the passage?A. Mre than 400 unknwn species have been discvered.B. Scientists used t believe that ants came frm Africa.C. Peple believed that dinsaurs lked like huge elephants.D. There are still mre secrests f nature t be discvered thrugh amber.
1.What des the writer cmpare amber t?
A windw n the past and a key t unlck mre secrets f nature.
Read Paragraph 5 and answer.
2. Why des the writer make these cmparisns?
The authr presents metaphrs such as "a windw n the past" and "this key t unlck secrets" t guide students t visualize the abstract "amber value" and enhance readability. They als help students experience the rle f "language vividness" in ppular science texts.
4. What is the writer’s purpse in writing this passage?A. T explain why dinsaurs had feathers.B. T encurage scientists t d mre research n dinsaurs.C. T intrduce hw amber helps us learn abut ancient life.D. T describe different types f amber fund arund the wrld.
3 What d yu think f studying amber? Why?(please give tw reasns)
Studying amber is very valuable and meaningful. First, it is a windw n the past and can tell us many secrets abut ancient life. Secnd, it can help us discver new species and understand hw life n earth has changed ver time.(答案不唯一，合理即可)
Why d yu chse this ptin?
Chse where yu are mst likely t read this passage.
Optin a. In a ppular science magazine, we can read abut real scientific discveries in nature. This passage talks abut amber and what scientists have discvered, s it is a gd match.Optin b. A newspaper reprt is usually abut events, fr example an exhibitin. But this passage is nt abut an event. It is abut scientific facts, s this is nt crrect.Optin c. A sci-fi bk tells imaginary (想象的) stries, like travelling int the past. But this passage is nt a stry. It gives real facts, s this is als nt crrect.
1. secrets2. Thanks t3. (always) changed4. 35 millin / thirty-five millin5. unknwn6. ant7. windw8. nature
Cmplete the diagram with the wrds and expressins frm the passage.
与语文课文中的《琥珀》比较：跨学科学习（阅读课后）（选作）
英语说明文(English explanatry text)：scientific, illustrative, vivid and scientific research value科学性、说明性、生动性和科研价值
小学语文(Chinese)：stry-based, interesting, and situatinal descriptin 故事化、趣味性、情节描写
Hw was amber frmed?
Think and discuss:（选作）
Raw Material
Frmatin Cnditins
1.下发跨学科语言支架清单：词汇+句型；2. 观看3D动画视频后，回答问题获得主要信息；3.小组讨论,结合语文课文和动画，完成琥珀形成的条件分析；4.完成生物和地理的任务清单，可当堂利用工具书查词，小组内讨论后，组内同学共同进行展示表达。（注意利用语言支架进行口语输出表达）
跨生物、地理学科探究的步骤
本单元涉及的跨学科基础核心词汇表（中英对照）（节选）
核心句式支架表（节选）
1. 宾语从句（that / if / whether）
树脂分泌→包裹生物→地质掩埋→石化成琥珀
1. Why culd amber frm in this envirnment?
Warm and humid climate helps cniferus trees secrete resin（树脂）.
2. What gelgic prcess turns resin int amber?
Gelgical mvements buried the resin.
3. Can yu describe tw key steps t frm the amber?
First, resin drips frm trees. Then, it is buried by sediment（沉积物）.
Watch the vide and answer the questins:
结合语文课文和动画，完成“琥珀”形成的条件分析：
1. Plants can secrete resin (such as pine trees)；2. There are plants and animals wrapped
1. A warm and humid climate (favrable fr resin secretin);2. Crustal mvement/depsitin (burial f resin balls);3. A lng perid f time (several tens f millins f years)
“老松树渗出厚厚的松脂”；
cniferus trees/ insects/ plants
“太阳热辣辣地照射” “陆地沉下去，海水漫上来”；
warm and humid climatesediment burialmillins f years
Investigatins f Bilgical Knwledge:
1.Amber is made frm plant resin. (琥珀由植物树脂形成)2.Resin is a secretin f plants, which can prtect plants. (树脂是植物的分泌物，能保护植物)3.Sticky resin can trap ancient rganisms. (insects, flwers, feathers) (粘性树脂能包裹古生物：昆虫、花朵、羽毛等)4.Amber preserves ancient rganisms well, becming a fssil. (琥珀完好保存古生物，形成化石)5.Amber prvides evidence fr the evlutin f species. (琥珀为物种演化提供证据)
Explratin f Gegraphical Knwledge:
1.Amber frms in warm and wet climates. (琥珀形成于温暖湿润的气候环境)2.Ancient frest areas are the main places fr amber frmatin. (远古森林地区是琥珀形成的主要区域)3.Resin becmes amber after millins f years f gelgical prcesses. (pressure, temperature) (树脂经数百万年地质作用形成琥珀)4.Sediment burial helps resin frm amber. (沉积物掩埋助力树脂形成琥珀)5.Crustal mvement brings amber frm undergrund t the surface. (地壳运动将琥珀从地下抬升至地表)6.Amber can shw us the ancient climate , gegraphical envirnment, ancient species and their evlutin frm amber.(琥珀能还原远古的气候、地理环境、古代物种和进化)
【设计意图】通过跨地理学科探究，引导学生用英文回答关于琥珀形成的气候、区域、地质及琥珀形成化石的重要科研价值，可以鼓励当堂使用工具书进行词汇的查找，小组讨论后再进行展示表达。
跨学科学习过程评价标准：
Read alng with the recrding.
Task：学校组织“科学活动日”，你代表班级,被选为“科学小小讲解员”，请结合你研究的跨学科任务单，利用本课所学，介绍“琥珀”的成因、科学研究发现，及其科学价值。
Retell the passage.
abut the dinsaur
abut the flwer
abut the ants
Amber shws us ...
It shws us...
It helps us understand that...
It helps us discver...
a windw n the past
a key t unlck mre secrets f nature
(always) changed
Self reflectin
（总分：优秀9-10；良好7-8；合格6）
Paragraph 1 is exciting and interesting. The writer begins like this t draw readers’ interest and make them want t read mre.
We can learn abut nature’s secrets by reading, visiting museums, explring the utdrs, ding research r ding experiments.
基础层：作为学校的科学讲解员，写一段50词左右的英语短文，展示 “琥珀”的成因、科学发现及价值；提高层：提出一个你想知道的“科学发现”，查找相关资料。