The Properties of Water教案

unit 13 the properties of water
teaching goals
1. talk about water and the ocean.
2. practice communicative skills.
3. review modal verbs.
4. write an explanation paragraph.
the first period
teaching aims:
1.  learn and master the new words and the useful expressions of this part.
2.  learn something about water by doing experiment.
3   do some listening.
4.  improve the students’ speaking ability by talking.
teaching important points:
1.  make the students be free to talk about water.
2.  improve the students’ listening ability by listening.
teaching difficult points:
1.  how to finish the task of speaking.
2.  how to improve the students’ listening ability.
teaching methods:
1.  listening-and-answering activity to help the students go through with the listening material.
2.  individual, pair or group work to make every student work in class.
teaching aids:
1.  the multimedia
2.  the blackboard
3.  an empty glass, a bottle of water and a bottle of vegetable oil
teaching procedures:
step 1 greetings and lead-in
read a short poem and guess its name: a letter from _______. (water)
dear user,
shame to you all, the ignorant,
i am your life
but you seem not to value me
give me all the respect
for in me is eternal life
if you continue abusing me
surely, all forms of life will wither away
have you ever imagined,
life without me?
i tell you, it will be unbearable
think twice
for every drop counts...
qs: 1) what does “dear user” here refer to?
2) what does it talk to its users?
3) on which planet does it exist?  －on the earth, which is also called the water planet.
4) do you know why it is called “the water planet”?
－because about three quarters of the earth is covered by water.
step2: pair work: collect as many words as possible related to water.
qs:
how much do you know about water?
is all water fresh or salty?
 
 
step3: talk about the properties of water.
1. pair work
 t: water is around us and inside us. we can’t go without water.
qs: why is water so important to living things?
can you point out some of its properties or characteristics?
 suggested vocabulary:
it's colorless, tasteless, odorless and universal dissolvent.
it feels wet;
it exists in three forms: liquid, solid, gas, and is cycled through the water cycle;
it can absorb a large amount of heat;
it sticks together into beads or drops;
it's part of every living organism on the planet; etc.

2. group work
  learn more about water’s properties by doing some simple experiments and learn to describe an experiment.