初中沪教牛津版（2024）Section 2评课课件ppt

这是一份初中沪教牛津版（2024）Section 2评课课件ppt，共32页。PPT课件主要包含了Content，Listening，lightning，Speaking等内容，欢迎下载使用。
1.本单元的听力部分侧重培养学生获取主旨要义及关键细节的能力。2.口语部分可以结合前面听力部分sme interesting facts abut electricity讨论如何安全用电。并学习辅音音节的划分规则。
1.听前预测，捕捉信息。2.能够讨论安全用电的方法和建议。
树立安全用电、珍惜生命的观念。
对学生进行生活常识和安全教育，了解用电安全—即家用电器的安全使用问题
Interesting facts abut electricity
Hw much d yu knw abut electricity?
First ,Electricity isn’t an inventin it is a discvery.
Electricity is a discvery. It exists in nature, like in lightning and electric eels. Scientists studied and understd its prperties, rather than inventing it.
electric eels
Wh and when was electricity first discvered?
Many believe that electricity was first discvered by the Ancient Greeks mre than 2,500 years ag
Hw fast electricity travels?
The answer is: the speed f light! That is, abut 300 millin metres per secnd!
Wh and when was the bulb first invented?
Thmas Edisn is ften thught as the inventing the first practical light bulb in 1879
Electric cars are very ppular nw, but the idea is nt new. British inventr Rber Andersn invented the first electric car arund 1832.
Electricity waste is very serius in varius cuntries, and we need t save electricity
Famus cities in Asia
(1) Is electricity an inventin r a discvery?
1 Hw much d yu knw abut electricity? Discuss the questins in pairs.
Electricity is a discvery. It exists in nature.
(2) Hw fast des electricity travel?
(3) Is the electric car a new idea? When was it first invented?
The same speed as light! That is, abut 300 millin metres per secnd!
2 Listen t a pdcast abut electricity and tick (✓) the tpics mentined in it.
(1) Wh first discvered electricity(2) Hw we prduce electricity tday(3) Hw electricity travels t ur hme(4) When the first electric car was invented(5) Hw much electricity is wasted each year in the UK and the USA
3 Listen again and cmplete the ntes.
the first electric car
the secnd half f the 19th century
billins f punds
Gd evening. Thanks fr jining me in this week's The Natural Wrld. I'm Rebecca. Tnight, I'll share sme interesting facts abut electricity with yu.First f all, as yu may already knw, electricity was nt invented. It was discvered. But d yu knw when it was first discvered? Many believe that electricity was first discvered by the Ancient Greeks mre than 2,500 years ag. They prduced electricity by rubbing fur against smth stne!Next, d yu knw hw fast electricity travels? The answer is: the speed f light! That is, abut 300 millin metres per secnd!
Anther interesting fact is abut electric cars. They are very ppular nw, but the idea is nt new. British inventr Rber Andersn invented the first electric car arund 1832. Hwever, this car was nt very useful. It wasn't pssible t drive electric cars until the secnd half f the 19th century.Finally, we are always trying ur best t make gd use f this energy, but accrding t a reprt, billins f punds f electricity is wasted every single year in the UK. And anther reprt shws that in the USA, abut 30% f the electricity used in ffices each year is wasted. This just shws hw imprtant it is t save electricity in ur daily lives.That's all frm me tday. I hpe yu enjyed learning a bit mre abut electricity.
4 What ther interesting facts abut electricity d yu knw? Share them with yur classmates.
Human's first cntact with electricity was electric fish.
Our brain transmits signals thrugh electricity.
Brklyn Bridge (in New Yrk) was the first bridge pwered by electricity.
Talk in pairs abut safety rules fr using different electrical appliances. Lk at the example and use the tips belw t help yu.
Talking abut using electricity safely
Electrical safety tips• Never tuch electrical appliances with wet hands.• Make sure all cables are safe t use.• D nt use brken cables / electrical appliances.• Read the instructins carefully befre yu use a new electrical appliance.
S1: We use different electrical appliances in ur hmes every day. Hw can we use them safely?S2: We need t make sure that the cables (n. 电缆) are cnnected crrectly befre we turn n the device. And we mustn't tuch any electrical appliances with wet hands.S1: That's right! Als, we cannt use any brken
We can use electricity safely and wisely
Befre yu tuch any electrical device, make sure yur hands are dry. Wet hands can easily cnduct electricity, putting yu in danger.​Unplug chargers and ther devices when they aren't in use. This nt nly saves electricity but als reduces the risk f verheating.​Never stick anything int electrical sckets. it can cause a shrt circuit r an electric shck.​Use electrical appliances nly as they are designed t be used. Dn’t try t mdify them, r yu may damage the appliance and even start a fire.​When yu see a damaged pwer crd, dn’t use the device. Instead, tell an adult s they can arrange fr it t be fixed.
音节：有的单词只包括一个音节，有的单词包含两个、三个或更多的音节，分别称为单音节词、双音节词和多音节词。 单音节词一般都是重读的。双音节词一般只有一个音节是重读的。多音节词除了重读音节外，有时还有一个次重读音节。音节的核心是元音。少数辅音字母，如l、m、n也可以构成非重读音节。一个音节里可以只有一个元音字母而没有其他字母，如i 、a。元音字母的前面或后面可以有一个或两个辅音字母。如we, she, at, ask, bx, them, desk, middle, letter等。
Read the fllwing wrds alud. Pay attentin t the syllables in the wrds.
5. candle6. dangerus7. battery8. American
1. newspaper2. hear 3. able4. anyne
Say these wrds. Then write the number f syllables.
1.We have listened t sme interesting facts abut electricity2. We have learned t identify the syllables in English wrds.3. We have learned t talk abut hw t use electricity safely and wisely
一、找出每组单词中音节数目与其他三项不同的一项。( )1. A. allw B. beautiful C. airprt D. happy( )2. A. bright B. clever C. wise D. gd( )3. A. careful B. helpful C. useful D. wnderful( )4. A. crazy B. interesting C. excited D. imprtant( )5. A. battery B. example C. mdel D. pssible
二、根据汉语或首字母写单词
1.We shuld stand a_______ bullying at schl. It makes everyne feel safe. 2.Dn‘t drive s fast n the rad. S_______ always cmes train is mving at a great s________. We can reach the city carefully t the teacher’s i__________ befre the game starts.5. Let’s __________(连接)the speaker t the cmputer. Then we can enjy music.6. The ladder is leaning a_________ the wall. Make sure it’s stable befre yu climb up.7. The surface f the glass table is ______(光滑的）, s I have t be careful nt t let my phne slide ff. 8. Electricity was nt i__________. It was __________(发现). 9. They p___________ electricity by rubbing fur against smth stne!10. We can use electricity safely and ________(明智地).
instructins
invented discvered
1.我们总是尽最大努力充分利用这种能量we are always ____ _____ _____t ____ ____ _____ _______this energy2.他驾驶着电动汽车以每小时100公里的速度行驶。He is driving an electric car __ ____ ___ _____100 kilmeters per hur.3.正如你可能所知，电不是发明出来的。它被发现了。_____ ____ ____ ______, electricity was nt invented. It was discvered. 4.他们用皮毛摩擦光滑的石头来发电！They _________ _______by rubbing fur _________smth stne!5.直到19世纪下半叶，才有可能驾驶电动汽车。It _____pssible t drive electric cars _____the secnd half f the 19th century.
trying ur best make gd use f
at a speed f
As yu may knw
prduced electricity against
wasn’t until
6.在你使用一个新的电器之前，请仔细阅读用法说明。Read the _________ carefully befre yu use a new ________ ________.7.我们需要确保电缆已连接到设备在我们打开它之前We need t _____ _______that the cables _____ _____ _______the device crrectly befre we turn n it
instructins electrical appliance
make sure are cnnected t
Gd evening! I’m Rebecca, and welcme t this week’s The Natural Wrld. Tnight, I’ll tell yu sme interesting things abut electricity. Electricity wasn’t invented; it was discvered. The a_________ Greeks discvered it ver 2,500 years ag by rubbing fur a________ smth stne. Electricity travels at the s_____ f light, abut 300 millin metres per secnd. The first electric car was invented by British inventr Rber Andersn arund 1832. But it wasn’t really useful u________ the late 19th century. Sadly, a lt f electricity is wasted. In the UK, billins f punds f electricity is wasted every year. In the US, 30% f ffice electricity is wasted. S, it’s imprtant t use electricity w_______ . That’s all fr tday. I hpe yu learned smething new abut electricity.