外研版 (2019)必修 第三册Unit 3 The world of science备课课件ppt

这是一份外研版 (2019)必修 第三册Unit 3 The world of science备课课件ppt，共25页。PPT课件主要包含了Process等内容，欢迎下载使用。

T knw smething abut Benjamin Franklin and his famus kite experiment.2. T learn smething abut an essay title.3. T learn sme wrds and expressins.
Benjamin Franklin
What made him famus?Funding Fathers f the US Declaratin f Independence leading authr, printer, publisher, diplmat, scientist and inventr.
1. Read the shrt intrductin t Benjamin Franklin and share any ther infrmatin yu knw abut him?
Benjamin Franklin (1706-1790) was ne f the Funding Fathers f the United States and helped draft the Declaratin f Independence. Apart frm being a successful statesman, he was als well knwn as a leading American authr, printer and publisher, successful diplmat, creative scientist and inventr.
His Famus Experiment
A small crss f tw pieces f light wd. Tie the crners f a handkerchief t the pints f the crss.Add a tail t the frame.Tie a lng string t the crss. Fix a sharp piece f metal t the tp f the lnger stick f the crss. Fasten a key t the end f the lng string.Tie a silk ribbn t the string.Cnnect a cndenser t the end f the string.
Hw t make a kite and d the experiment
Title: Franklin’s Experiment: Hw Much Is True?
What can yu infer frm the essay title?
The essay title is explicit, making it clear that the stry abut Franklin’s experiment may be fictinal.
标题（title）是文章的眼睛。好的标题短小精悍，简洁凝练，是文章内容和思想的高度概括。我们可以通过研读标题，对文章体裁、内容、作者态度和观点等作出预测。我们以课文FRANKLIN'S EXPERIMENT: Hw Much Is True?为例，看如何利用标题帮助我们有效阅读。1. 预测文章体裁该标题分为两部分：“FRANKLIN'S EXPERIMENT:”说明了本文要论述的对象是富兰克林的实验，而“Hw Much Is True?”说明本文会阐述该实验的可信度。因此，我们可以预测本文是论说类文体，其中心论点是“验证富兰克林的实验是否真实”。
利用文章标题预测文本信息
2. 预测主要内容从关键词“FRANKLIN'S EXPERIMENT, True”以及疑问形式，我们可以联系自己对富兰克林实验的了解，预测文章主要对其真实性质疑，并围绕这一中心论点对其进行论证。3. 预测作者的态度和观点从标题中的问号，我们可以预测作者对此实验的真实性持否定态度，并将对自己的怀疑进行论证说明。
An essay title ften cntains an explicit (清楚明确的) r implicit (含蓄的) questin which yur essay shuld fcus n answering. Fr example, the title “Franklin’s Experiment: Hw Much Is True?” makes it clear what questin is being answered within the essay.S if there is a title, we’d better read it first t get t knw the main idea f the passage.
Read the passage and find ut what Franklin’s experiment aimed t prve.
Franklin’s experiment aimed t prve that lightning was a frm f electricity.
Read the passage and fill in the experiment reprt.
A kite with a string and a metal key
First, Franklin flew a kite with a string and a metal key.Then, when a flash f lightning hit the kite, electricity was cnducted thrugh the string t the key.Finally, tuching the key, Franklin gt an electric shck.
T test if lightning was really prduced by electricity.
Number the statements t shw hw peple's attitudes twards Franklin's experiment have changed.
Franklin’s spirit f scientific explratin is still cnsidered an inspiratin. Peple are amazed at and inspired by Franklin’s experiment.Scientists questin what really happened in Franklin’s experiment.
Lk thrugh the passage and answer the questins.
1. What’s the meaning f “… if Franklin had actually tuched the key, he wuld certainly have died frm the electric shck.”2. Thus hw much is true in this experiment?
He didn’t tuch the key.
Flying the kite and the kite was hit by a lightning may have happened, but Franklin didn’t tuch the key.
1) D yu think it matters that Franklin’s experiment might nt be true? Why? eg N. Because what really matters lies in his bravery t d the experiment. 2) What is yur pinin abut the statement "…we shuld nt always believe everything we read r hear - even if it is a great stry"? eg Smetimes a really great stry may nt be true, and we need t have critical thinking.
3) What qualities d yu think a great scientist shuld have? eg I think a great scientist shuld be patient, serius, brave, careful, creative and imaginative…4) In what ways d scientists cntribute t sciety?Firstly, scientific discveries prmte the develpment f ur sciety. Secndly, the cntributins f scientists in medicine extend ur life span. Thirdly, scientists have invented a lt f surprising tls that fundamentally imprve ur living standards.
Explain yur understanding f the saying “Seeing is believing”, and then give a talk abut it. Yu may use infrmatin in the passage as examples.
Yur understanding
Supprting details
We shuldn’t believe what we dn’t see.
The 4th paragraph f the passage.
1. Make ntes abut yur understanding f the saying and list supprting details.
2. Organise yur talk fllwing the steps belw.Start yur talk by explaining hw yu understand this saying.Explain why yu think this way. Use the ntes yu have made t supprt yur ideas.End yur talk by summarising yur pints.3. Give yur talk t the class.
1. Try t find mre infrmatin abut Franklin’s Kite experiment n the Internet.2. Chse anther wrld famus scientist and figure ut what he/she is famus fr. Write dwn yur results and the reasn(s) why yu chse him/her.