课标人教实验版高三 Module 9

Unit 4

Experiment reports

Look at the pictures in Exercise 1 and

guess the answers to the questions:

What materials are being used in this

experiment?

What do you think the purpose of the

experiment is?

What order do you think the pictures

should go in?

Listening on P79

Number the pictures in the order you

hear about them.

2

3 1 5

4

Listen to the first part again and

answer the questions.

1. What is the purpose of the experiment?

To find out three important conditions

that seeds need in order to start

growing.

2. Are students going to do the

experiment in groups or individually?

In groups.

3. Where are the materials that the

students need to set up the experiment?

On the bench.

4. What materials do the students need

to set up the experiment?

Four dishes and four pieces of cloth,

a dish of seeds, some tap water, some

boiled water and some cooking oil.

Third listening

Listen to the first part again and

complete the table of conditions that each

dish of seeds was given.

Conditions

Dish A

Dish B

Dish C

Dish D

tap water, warm temperature, oxygentap water, cold temperature, oxygenno water, warm temperature, oxygenboiled water, oil, warm temperature, no oxygen

Fourth listening

Now listen to the second part of the

tape in which the class discusses the

results of the experiment. Complete

the table of results.

Did the seeds grow?

Reasons why or why not

Dish A

Dish B

Yes Because they had water, warmth and oxygen.

No Because it was toocold.

Did the seeds grow?

Reasons why or why not

Dish C

Dish D

No

No

Because they were watered with boiled water which has no oxygen. Also, they were covered with oil which prevented oxygen getting to the seeds.

Because they didn’t get any water.

Listen to the second part of the tape

again and discuss the question:

What was the conclusion of the

experiment?

Seeds need warmth, water and

oxygen to grow.

An experiment on plants

Part1: Listen to a teacher(TH) helping

her class set up an experiment.

TH: OK, everybody, this morning we’re

going to do an experiment to find

out three important conditions that

seeds need in order to start growing.

LISTENING TEXT

The materials are all on the bench.

Choose someone from your group to go

and get four dishes and four pieces of

cloth, a dish of seeds, some tap water,

some boiled water and some cooking oil.

Look at the instructions on the board.

Let’s read through them.

One: Put the pieces of cloth on the dishes

and spread the seeds on the cloth.

Label the dishes A to D.

Two: Take Dish A and wet the cloth with

tap water and place it in a well-

aired warm spot– so by the window

over there would be fine.

Three: Take Dish B, wet it with tap

water and put it in the fridge.

Four: Take Dish C and put it next to

Dish A. Do not water it.

Five: Take Dish D and water it with the

boiled water. Then drop a

small amount of oil onto the cloth

and put it next to Dish C.

Six: Leave them all for a few days. OK,

now you can go ahead and set up

the experiment.

Part 2: Listen to the class discussing the

results of the experiment.

Students include Andrew

(A), Rosemary (R) and

Sandy(S).

TH: Right, let’s talk about what’s

happened in our experiment. What

are the results? Andrew?

A: The seeds in Dish A have started

growing but none of the others have.

TH: Good. Why do you think the

seeds in Dish B didn’t grow?

Rosemary?

R: Because it was too cold?

TH: That’s right. And what about

Dish C?

R: The seeds didn’t get any water so

they couldn’t grow.

TH: Yes. Now, Dish D is interesting.

The seeds got both water and

warmth so why didn’t they

grow? Any ideas? Andrew?

A: Well, the seeds got boiled water.

TH: So, why’s that important?

Anyone? Well, boiled water has

no oxygen in it and seeds need

oxygen to grow. And What about

the oil? Sandy?

S: Wouldn’t the oil make sure that no

Oxygen could get to the seeds?

TH: Excellent. Well done. So, what’s

our conclusion about three

important conditions that a seed

needs in order to start

growing?

S: That seeds need warmth, water

and oxygen to grow.

TH: Very good. Now I want you all

to write up the experiment in

your science notebook.

Writing task

When writing an experiment report, yo

u can ask questions about:

● the position of the headings, what the

headings are, their order:

● how the items in the “materials” sect

ion are presented (as a list);

● what the “procedure” tells you (the

steps you carry out to set up the expe

riment);

● the grammatical structures used

for each section of the report.

Outline

Materials:

A B C D

Aim: To find out three important conditions that seeds need in order to start growing.

1. four dishes

2. four pieces of cloth

4. some tap water

3. some boiled water

5. a dish of seeds

6. some cooking oil

Procedure:

1.Put the pieces of cloth on the dishes. Spread the seeds on the cloth. Label the dishes A to D.2. Take Dish A and wet the cloth with tap water and place it in a well-aired warm spot—so by the window over there would 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 to Dish A.

Do not water it.

5. Take Dish D and water it with the

boiled water. Then drop a small amount

of oil onto the seeds and put it next to

Dish C.

6. Leave them all for a few days.

Results

Dish A:

Dish B:

Dish C:

Dish D:

Conclusion

Seeds need warmth, water and oxygen to grow.

The seeds grew.

The seeds didn’t grow.

The seeds didn’t grow.

The seeds didn’t grow.

Sample report:

I did the experiment to find out three

important conditions that seeds need in

order to start growing.

First, I put the four pieces of cloth on

each dish, spread the seeds on the cloth

and label the dishes A to D.

Then I placed Dish A in a well-aired

warm spot by the window, took Dish

B and wet it with tap water and put it

in the fridge, took Dish C and put it

next to Dish A without watering it.

Finally I watered Dish D with the

boiled water, dropped a small amount

of cooking oil onto the seeds and put it

next to Dish C. A few days later, I

found that only Dish A grew.

So I drew a conclusion that seeds

need warmth, water and oxygen to

grow.

Discussion:

Look at the pictures of a plant

experiment. The pictures are in the

correct order. Discuss with partners

about the processes the plants go

through. Report each picture one by

one:

Plant three beans in a pot, water them

and leave them in a warm, light spot.

Two small shoots appear.

Cut the ends off a plastic bottle.

Wrap the bottle in dark paper.

Lay the bottle on its side in the pot and put some wet paper towel inside. Put one of the seeds in the centre of the bottle.

The seed have two long shoots, one heading towards the soil and the other growing up toward the light.

Sample:

I planted three beans in a pot, watered

them and left them in a warm light spot. I

n a week each seed had two small shoots.

I cut the ends of a plastic bottle and

wrapped it in dark paper. I laid the bottle

on its side on the top of the pot of soil and

place a wet piece of paper towel inside the

bottle.

I put one of the seeds in the centre of th

e bottle. Two weeks later the seed had t

wo shoots, one growing up and the

other growing down. So I drew a conclu

sion that shoots grow up towards the

light, roots grow downwards into the

soil.