人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists精品课件ppt

这是一份人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists精品课件ppt，共60页。
Learning bjectives:
At the end f this lessn, students are able t:1. T listen t a cnversatin abut the scientific experience;2. T extract specific infrmatin while listening and cmplete missing infrmatin;3. T describe the scientific experience in listening;4. T share the scientific experience yu participate in;5. T make a presentatin n a scientific phenmenn.
Lead-in：
Lk at the phts belw, and discuss in grups what these activities have t d with science.
a giant dish whisper
I think the dish in this exhibitin is related t sund.Maybe the by is whispering int the smaller circle and the dish can make his vice luder.
a pian keybard play with feet
This lks like a pian yu play with yur feet. Maybe it shws hw sund wrks.
a blue screen bright lights
I'm nt sure what this ne shws, but it must be abut light r eyesight.
a hall f mirrrs reflect
It is a hall f mirrrs. Maybe it has t d with the principles f reflectin.
a white light cast shadws in the clr f the rainbw
This is prbably an experiment invlving the cmpsitin f light.
Pre-listening：
Using the phts, try t predict the answers t the questins.
1. Where are the peple in the cnversatin ging t g?2. What kind f place is it, and what des it fcus n?3. What kinds f things can yu d there?
1. Where are the peple in the cnversatin ging t g?A science museum/centre.2. What kind f place is it, and what des it fcus n?A place fr delight, educatin and inspiratin. It fcuses n letting visitrs experience science.3. What kinds f things can yu d there?Try different interactive(adj.互动的) activities t experience sund, light, reflectin and s n.
While-listening：
Write dwn the letters (A—E) fr the phts in the rder that yu hear them.
1 ________ 2 ________ 3 ________ 4 ________ 5 ________
a hall f mirrrssee myself reflected thusands f times
a blue screentiny bright lightsbld cells
a white lightcast different shadwsin every clur f the rainbw
a giant pian keybarduse yur feet t playplay vices f classical singers
a giant dishreflect the sund backspeak in a whisper t smene 17 metres away
Predict by using pictures One way t get mre ut f yur listening is t predict what yu will hear. Using the pictures prvided and the knwledge yu already have, yu can guess the kinds f infrmatin yu shuld listen fr. At times, yu may even be able t guess exactly what will be talked abut. This will help yu fcus better when listening, making yur listening mre effective.
Listening tip
Pht A: A giant dish; when yu speak int it, it ________ the sund back and _______________. Yu can use it t speak in a ________ t smene 17 metres away.Pht B: A giant ________________ that yu can use yur feet t play. Instead f playing the sunds f a pian, it plays the vices f ________________.Pht C: Yu lk at a blue screen fr a while, and then suddenly yu can see ________________ mving arund n it. These are ur _______________.Pht D: A _______________ where yu can see yurself reflected thusands f times.Pht E: Yu stand in frnt f ____________, and it casts different shadws f yu, in _______________ the rainbw.
makes it luder
pian keybard
classical singers
tiny bright lights
wn bld cells
hall f mirrrs
a white light
every clur f
Judy: Oh, I'm s srry that yu were ill and culdn't cme with us n ur field trip. Hw are yu feeling nw? Better?Bill: Much better, thanks. But hw was it?Judy: Wnderful! I especially liked an area f the museum called Light Games. it was really cl. They had a hall f mirrrs where I culd see myself reflected thusands f times!Bill: A hall f mirrrs can be a lt f fun. What else did they have?
Audi Script
Judy: Well, they had an experiment where we lked at a blue screen fr a while, and then suddenly we culd see tiny bright lights mving arund n it. Yu'll never guess what thse bright lights were!Bill: Cme n, tell me!Judy: They were ur wn bld cells. Fr sme reasn, ur eyes play tricks n us when we lk at a blue screen, and we can see ur wn bld cells mving arund like little lights! But there was anther thing I liked better. I std in frnt f a white light, and it cast different shadws f me in every clr f the rainbw!Bill: Oh, I wish I had been there. Tell me mre!
Judy: Well, they had anther area fr sund. They had a giant pian keybard that yu culd use yur feet t play. But then, instead f playing the sunds f a pian, it played the vices f classical singers! Then they had a giant dish, and when yu spke int it, it reflected the sund back and made it luder. Yu culd use it t speak in a whisper t smene 17 metres away.Bill: It all sunds s cl. I wish I culd have gne with yuJudy: I knw, but we can g tgether this weekend. I'd lve t g there again!Bill: That sunds like a great idea!
Pst-listening：
1. The cnversatin is abut the City f Science and Industry, a museum in Paris. Wuld yu like t g t this museum? Why r why nt?Yes. I can learn a lt abut science and it can braden my hrizns.
位于巴黎东北部的“科学与工业城”据说是世界上最大、访问人数最多的博物馆之一，同时也是欧洲最大的科普中心。博物馆于1986年对外开放，科学城空间功能分4个部分：永久性陈列（地球宇宙、生命奥秘、物质人类、语言 交流），最新科技成果和工业产品（包括幻影式战斗机和啊丽亚纳火箭和空间站），图书资料中心，底层会议中心。其中还包括3D电影院、水族馆、植物园和众多新科技产品。
What can yu d in the City f Science and Industry?What d yu like mst abut it?
2. Are there any museums like this in China? What ther interesting museums are there?Yes. Fr example, there is the China Science and Technlgy Museum in Beijing and the Shanghai Science and Technlgy Museum.
Have yu ever been t such a museum in China?Where is it?What is it like?What did yu d there?
Tday, I want t talk t yu abut a very strange phenmenn called a nn-Newtnian fluid. Yu can make it easily using equal parts f water and crnflur, like I have here. A nn-Newtnian fluid is strange because yu can pur it like a liquid, but if yu put any pressure n it, it suddenly becmes hard as cncrete. In fact, it becmes hard enugh t stand n. Then, as sn as yu take the pressure ff, it becmes a liquid again. This shws that it is pssible that smething can exist as a liquid and a slid at the same time.
Make a shrt presentatin n a scientific phenmenn
.. can/cannt exist in the frm f a slid/gas and a liquid/plasma Is bth a ... And a.. . at the same time light/sund is reflected the existence f ther…This ccurs when ...
If yu will becme demnstrates ….This experiment/research shws. .. Thrugh this, we knw that can prve that evidence prves …
Useful expressins f talking abut scientific phenmena:
Let’s talk abut scientific phenmena
Tday, I want t talk t yu abut a very strange phenmenn called a nn-Newtnian fluid. Yu can make it easily using equal parts f water and crnflur, like I have here. A nn-Newtnian fluid is strange because yu can pur it like a liquid, but if yu put any pressure n it, it suddenly becmes hard as cncrete. In fact, it becmes hard enugh t stand n. Then, as sn as yu take the pressure ff, it becmes a liquid again. This shw that it is pssible that smething can exist as a liquid and a slid at the same time.
Sample Study
phenmenn n. 现象 pl. phenmena)
Talking Practice
Pssible Versin
Tday, I’m ging t talk abut wind. In winter, when yu pen the dr suddenly, yu will feel the strng sudden wind cming int the rm. Hw des it happen? Well, there is warm air inside the rm. And the warm air is light s it ges up. When we pen the dr, cld air cmes in. And it flws n the surface f the flr because it is heavier than the ht air. As a result, cl air r cld air takes the place f the warm air. We call this circulatin f air wind. All in all, wind ccurs when there are temperature differences.
Definitin/Term
Talking abut scientific phenmenn
... can/cannt exist in the frm f a slid/gas and a liquid/plasma ...… is bth a ... and a ... at the same time light/sund is reflected ... ... the existence f ther ccurs when yu…, it will becme ... That demnstrates experiment/research shws …Thrugh this, we knw that can prve that evidence prves ...