初中仁爱科普版（2024）Unit 4 Amazing ScienceTopic 1 When was it invented?精品教学ppt课件

这是一份初中仁爱科普版（2024）Unit 4 Amazing ScienceTopic 1 When was it invented?精品教学ppt课件，文件包含U1T3Apptx、Unit1Topic3第1课时教学设计docx、Unit1Topic3大单元整体教学设计docx、G9wordsU1T3单词录音mp3、p17-1amp3、p18-2mp3、p18-3mp3、P17-1amp4、media1mp4等9份课件配套教学资源，其中PPT共37页， 欢迎下载使用。

Learning bjectives
After learning the lessn, we can:
learn sme cre wrds and expressins f the text;
use the passive vice f the simple past tense mreprperly.
talk abut new technlgy GPS.
develp ur imaginatin and creativity by designing ur wn inventins.
It is used fr sending satellites r spaceships int space.
What’s a rcket used fr?
Where was it develped ?
It was develped in Japan.
When was the digital camera develped?
It was develped in the 1970s.
The radi was invented by Guglielm Marcni in 1895.
Wh invented the vide?When was the vide invented?
Passive Vice (Ⅱ)
My brther dreams f becming an explrer and traveling t far-ff lands t uncver ancient secrets.
Pre-reading
guiding mark
The trail was easy t fllw because there were clear guiding marks painted n the trees every few meters.
If a map shws where my hme is, then I can use the cmpass t pint me in the directin tward hme.
The sun is in a perfect psitin fr taking a great pht f the landscape.
It intrduces the challenges faced by early explrers when using stars as navigatin markers and the great rle f the Glbal Psitining System (GPS).
What 's the main idea f this passage?
While-reading
1. Hw did the early explrers knw where they were?
They fund ut where they were by using stars.
Read and understand.
2. What’s the disadvantage f using the stars as guiding marks?
Its disadvantage is that it didn’t wrk well when the weather was bad and the stars culd nt be seen.
3. What is a GPS? Is it useful t use?
It is like a man-made star. We can use it at any time, in any place and in any weather t find ut ur psitin. It is very useful.
4. What d yu think the GPS will be used fr in the future?
The GPS will likely be used fr mre precise navigatin, tracking, and lcatin-based services in the future.
Watch a vide abut GPS.
Where Are We? Where are we? That was a big questin when we first explred ur wrld lng ag. The early explrers fund that the stars in the sky were gd guiding marks. Using the stars, they culd find ut where they were and in which directin they were ging. This methd wrked well at night as lng as the weather was gd and the stars culd be seen. But it didn't wrk s well during the rest f the time. That was a prblem.
Language pints
Tday, the prblem has been slved by the Glbal Pstitning System(GPS). It is like a man-made star. We can use it at any time, in any place and in any weather t find ut ur psitin. It can als be used t study the shape f the earth. The GPS is a great inventin that helps us explre ur planet and discver where we are.
眼疾嘴快 ！--- （英汉互译）
Pst-reading
根据首字母提示，完成短文。 Thanks t GPS, we can exactly knw w _____we are nw. GPS is like a man-made “star”. It can be u____ in any place and any weather cnditin t find ut ur p________. In the past, the early explrers had t use stars in the s____ t tell them where they were, hwever, this methd didn’t wrk well when the weather was bad. S GPS is a great inventin that can help humans t better e________ ur planets.
Watch a vide abut The Era f China's BeiDu Navigatin Satellite System.
( ) 1. A big supermarket _____in ur city last year. A. is built B. were built C. was built ( ) 2.Culd yu tell me wh the radi ____ by? A. invents B. invented C. was invented( ) 3. Many trees and flwers _____ in ur schl last year. They made ur schl mre beautiful. A. have planted B. were planted C. planted( ) 4.The children ____ swim last mnth and they can swim very well nw. A. are taught B. were taught C. were taught t( ) 5.It is said that ptat chips _____by mistake abut ne hundred years ag. A. were invented B. invented C. are invented
Grammar exercise
Passive vice was /were +dne
1.Yu are late, all the tickets __________(sell) ut an hur type f cellphne ____________(make )in Shenzhen.3. I _________________ ( nt invite) t yesterday’s party. 4. ________ thse machines __________(check) this mrning?5. Many trees and flwers ______________(plant) in ur schl last year, and they made ur schl a beautiful garden.
were/was　+　v.的过去分词
wasn’t invited
were planted
This is Kangkang’s inventin.Lk at the infrmatin and the picture.What d yu think f it ?Discuss with yur partners.
2. Design yur wn inventin. Draw a picture f it and write dwn the infrmatin abut it.
Describing Yur Inventin
3. Shw the picture f yur inventin and describe it t the class.4. Discuss in grups t decide which is the mst useful /interesting/funny inventin.
We learn: sme wrds: mark, explrer2. sme phrases: find ut, as lng as, wrk well, 3. sme sentences:This methd wrked well at night as lng as the weather was gd and the stars culd be seen.We can: 1. use the passive vice f the simple past tense mreprperly.2. talk abut new technlgy GPS.