高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists优秀说课ppt课件

这是一份高中英语人教版 (2019)选择性必修 第二册Unit 1 Science and Scientists优秀说课ppt课件，共13页。
Talk abut science experience
Using Language
1 Lk at the phts belw，and discuss in grups what these activities have t d with science.
A 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.B This lks like a pian yu play with yur feet. Maybe it shws hw sund wrks.C I’m nt sure what this ne shws，but it must be abut light r eyesight.D It is a hall f mirrrs. Maybe it has t d with the principles f reflectin.E This is prbably an experiment invlving the cmpsitin f light.
The phts abve are related t the cnversatin yu will hear. Using the phts，try t predict the answers t the fllwing 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?
Yu can prbably try different activities t learn abut sund，light，reflectin，and s n. Fr example，yu can g t a rm with many mirrrs facing each ther s it lks like there are many cpies f yu! Or yu can play with a big pian n the flr.
They are ging t a science museum.
It is a science museum that fcuses n letting visitrs experience science thrugh interactive learning exhibitins.
3. Listen t the cnversatin and see if yur answers fr Activity 2 are crrect. Then write dwn the letters （A-E）fr the phts in the rder that yu hear them described.
1________ 2_______ 3 _______ 4 _______ 5_______　　　　
听力原文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?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 clur 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 yu.Judy: I knw，but we can g tgether this weekend. I’d lve t g there again! Bill: That sunds like a great idea!
4 Listen again and cmplete the descriptins f the phts abve.
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.
every clur f
makes it luder
pian keybard
classical singers
tiny bright lights
wn bld cells
hall f mirrrs
a white light
5 Discuss the fllwing questins in grups. 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? 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.
Yes. The exhibitins seem really interesting. I think I wuld learn a lt there.
6 In grups，chse ne f the museum activities n the previus page r brainstrm anther scientific research r experiment that yu are interested in. 7 Make a shrt presentatin t the class abut yur chice. Use the example and useful phrases belw t help yu.
Suggested answer t 6&7
Tday，I want t talk t yu abut the psitive and negative charges f mlecules. We can demnstrate hw these interact thrugh a simple experiment using milk，dish sap，and fd cluring. First，cver the bttm f a shallw plate with milk. Nw add tw r three drps f different liquid fd cluring t the centre f the milk. They shuld frm ne large dark puddle in the middle f the milk. Nw，dip a cttn swab int dish sap，and place it int the middle f the fd cluring. Yu will see the clurs quickly mve t escape frm the sap，making interesting and beautiful patterns. This happens because the dish sap mlecules have a strng negative charge，and the milk mlecules have a strng psitive charge. Like magnets，these mlecules are attracted t each ther，and s they appear t mve arund n the plate，taking the fd cluring with them，making it lk like the clurs are quickly mving t escape frm the sap.