Lesson 25 Let’s Do an Experiment!多媒体教学设计及其点评

Lesson

25

Let’s

Do

An

Experiment!教学设计

太村中学：杨敬妮

LESSON

PRERATATION

Words

and

phrases:

science,

experiment,

fill,

prove,

theory,

jar,

upside,

observe,

right

side

up,

upside

down.

LESSON

STRUCTUR CLASS

OPENING:

Greet

each

other.

KEY

STEPS:

STEP

1:

Ask

the

class

to

discuss

the

questions

in

the

“Think

About

It.”

STEP

2:

Let

the

students

listen

to

the

tape

carefully

with

the

following

questions:”

Why

does

Danny

say

they

should

do

this

experiment

outside?”

“

What’s

Brain’s

theory?

”;

“

What

will

Brain

do?”;

“Does

Danny

have

the

same

theory

as

Brain’s?”

STEP3:

listen

to

the

tape

again.

The

student

had

better

read

the

dialogue

at

the

same

time.

After

reading

and

listening,

let

the

students

fill

in

the

chart

by

themselves. What

do

we

need

when

we

do

the

experiment?

water,

a

jar,

a

piece

of

cardboard

How

do

we

do

it

?(steps)

1.

fill…in…;

2.

cover…with…;

3.

turn…upside

down. What

are

Brain’s

and

Jenny’s

theories?

1.

The

floor

gets

wet.

2.

The

floor

won’t

get

wet.

Reason

Let

the

students

discuss Step

4:

After

filling

it,

ask

the

students

to

describe

the

experiment.

Then,

write

it

in

the

exercise-book.

Step

5.

Read

the

dialogue

and

act

it

out

by

the

students.

Step

6.

Homework.

Be

ready

to

give

us

an

experiment. Language

Notes:

Explain

some

sentences

and

phrases.

1.I

fill

a

jar

with

water.

fill…with…

On

hearing

the

news.

Her

eyes

filled

with

tears.

2.I

turn

the

jar

upside

down.

upside

down

That

picture

is

upside

down.

3.I

think

the

floor

will

get

wet.

The

days

get

longer

in

spring.

4.I’m

sure

that

the

floor

won’t

get

wet.

Tom

is

sure

that

he

will

win

the

game.

My

theory

will

prove

(to

be)

right

some

day.

6.We’ll

do

the

experiment

and

observe

what

will

happen.