人教版 (新课标)选修9&10Unit 5 Inside advertising教案配套课件ppt
展开1 Listen t the first part f the tape in which a teacher ids helping her class set up an experiment. Number the pictures in the rder yu hear abut them.
2 Listen t the first part again and answer the questins.
T find ut three imprtant cnditins that seeds need in rder t start grwing.
1 What is the purpse f the experiment?
2. Are students ging t d the experiment in grups r individually?
Fur dishes and fur pieces f clth, a dish f seeds, sme tap water, sme biled water and sme cking il.
4. What materials d the students need t set up the experiment?
3. Where are the materials that the students need t set up the experiment?
On the bench.
3 Listen t the first part again and cmplete the table f cnditins that each dish f seeds was given.
tap water, warm temperature, xygen
tap water, cld temperature, xygen
n water, warm temperature, xygen
biled water, il, warm temperature, n xygen
4 Nw listen t the secnd part f the tape in which the class discusses the results f the experiment. Cmplete the table f results.
Because they had water, warmth and xygen.
Because it was tcld.
Because they were watered with biled water which has n xygen. Als, they were cvered with il which prevented xygen getting t the seeds.
Because they didn’t get any water.
5 Listen t the secnd part f the tape again and discuss the questin:
What was the cnclusin f the experiment?
Seeds need warmth, water and xygen t grw.
An experiment n plantsPart1: Listen t a teacher (TH) helping her class set up an experiment.TH: OK, everybdy, this mrning we’re ging t d an experiment t find ut three imprtant cnditins that seeds need in rder t start grwing.
LISTENING TEXT
The materials are all n the bench.Chse smene frm yur grup t g and get fur dishes and fur pieces f clth, a dish f seeds, sme tap water, sme biled water and sme cking il. Lk at the instructins n the bard. Let’s read thrugh them.
One: Put the pieces f clth n the dishes and spread the seeds n the clth. Label the dishes A t D.Tw: Take Dish A and wet the clth with tap water and place it in a well-aired warm spt– s by the windw ver there wuld be fine.Three: Take Dish B, wet it with tap water and put it in the fridge.
Fur: Take Dish C and put it next t Dish A. D nt water it.Five: Take Dish D and water it with the biled water. Then drp a small amunt f il nt the clth and put it next t Dish C.Six: Leave them all fr a few days. OK, nw yu can g ahead and set up the experiment.
Part 2: Listen t the class discussing the results f the experiment. Students include Andrew (A), Rsemary (R) and Sandy (S). TH: Right, let’s talk abut what’s happened in ur experiment. What are the results? Andrew?A: The seeds in Dish A have started grwing but nne f the thers have.
TH: Gd. Why d yu think the seeds in Dish B didn’t grw? Rsemary? R: Because it was t cld?TH: That’s right. And what abut Dish C?
R: The seeds didn’t get any water s they culdn’t grw.TH: Yes. Nw, Dish D is interesting. The seeds gt bth water and warmth s why didn’t they grw? Any ideas? Andrew?
A: Well, the seeds gt biled water.TH: S, why’s that imprtant? Anyne? Well, biled water has n xygen in it and seeds need xygen t grw. And What abut the il? Sandy?S: Wuldn’t the il make sure that n Oxygen culd get t the seeds?
TH: Excellent. Well dne. S, what’s ur cnclusin abut three imprtant cnditins that a seed needs in rder t start grwing?S: That seeds need warmth, water and xygen t grw.TH: Very gd. Nw I want yu all t write up the experiment in yur science ntebk.
● the psitin f the headings, what the headings are, their rder:● hw the items in the “materials” sectin are presented (as a list);
Writing task
When writing an experiment reprt, yucan ask questins abut:
● what the “prcedure” tells yu (the steps yu carry ut t set up the experiment);● the grammatical structures used fr each sectin f the reprt.
three imprtant cnditins that seeds need in rder t start grwing.
2. fur pieces f clth
Aim: T find ut
4. sme tap water
3. sme biled water
5. a dish f seeds
6. sme cking il
Put the pieces f clth n the dishes. Spread the seeds n the clth. Label the dishes A t D.
2. Take Dish A and wet the clth with tap water and place it in a well-aired warm spt—s by the windw ver there wuld be fine.
3. Take Dish B, wet it with tap water and put it in the fridge.
4. Take Dish C and put it next t Dish A. D nt water it.
5. Take Dish D and water it with the biled water. Then drp a small amunt f il nt the seeds and put it next t Dish C.
6. Leave them all fr a few days.
The seeds didn’t grw.
Sample reprt:
I did the experiment t find ut three imprtant cnditins that seeds need in rder t start grwing. First, I put the fur pieces f clth n each dish, spread the seeds n the clth and label the dishes A t D.
Then I placed Dish A in a well-aired warm spt by the windw, tk Dish B and wet it with tap water and put it in the fridge, tk Dish C and put it next t Dish A withut watering it. Finally I watered Dish D with the biled water, drpped a small amunt
f cking il nt the seeds and put it next t Dish C. A few days later, I fund that nly Dish A grew. S I drew a cnclusin that seeds need warmth, water and xygen t grw.
Lk at the pictures f a plant experiment. The pictures are in the crrect rder. Discuss with partners abut the prcesses the plants g thrugh. Reprt each picture ne by ne:
Plant three beans in a pt, water them and leave them in a warm, light spt.
Tw small shts appear.
Cut the ends ff a plastic bttle.
Wrap the bttle in dark paper.
Lay the bttle n its side in the pt and put sme wet paper twel inside. Put ne f the seeds in the centre f the bttle.
The seed have tw lng shts, ne heading twards the sil and the ther grwing up tward the light.
I planted three beans in a pt, watered them and left them in a warm light spt. In a week each seed had tw small shts. I cut the ends f a plastic bttle and wrapped it in dark paper. I laid the bttle n its side n the tp f the pt f sil and place a wet piece f paper twel inside.
I put ne f the seeds in the centre f the bttle. Tw weeks later the seed had tw shts, ne heading twards the sil in the pt and the ther grwing up twards the light.
T find ut the directin in which shts and rts f plants grw.
Three seeds, dark paper, a pt f sil, tape, a plastic bttle, a paper twel, scissrs, water
1 Put the seeds in a pt f sil. Water them and put in a warm light spt until the seeds have tw small shts each.2 Cut the ends f a plastic bttle and wrap dark paper arund it.3 Take the seeds ut f th ept.
4 Put the bttle n its side n the tp f the pt pf sil. Place a wet piece f paper the twel inside the bttle.5 Place the sedd n the twel inside the bttle.6 Put back in a warm light spt.
One sht grew upwards. One sht grew dwnwards.
Shts grw twards light and rts grw dwnwards int the sil.
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