U2 Water
The first period
Teaching aims：
Introduce the topic water. Ask students to work in pairs for a few minutes, and to write down anything they know about water. Ask 3
students to tell their answers and write them down on the black
board. Then discuss their ideas briefly and do the exercises.
Teaching Important Points :
Try to know something about water
Teaching Procedures:
1: A Free Talk
What do you know about water
*People can live without food for more than a month, but they can’t live without water for more than week. Losing more than 20% o f the normal water content of our bodies will result in a painful death. *About 65-70% of our bodies are water, so it is important for us
to drink a lot of water. Each day, a normal person will drink about 2.4 liters of water or other drinks. In America, the average person will use 260 liters of water a day and on average, each person will drink 60, 600 liters of water in his/her life.
*Some people believe that our emotions and mental stability are
affected when there is a full moon because the gravitational pull of the moon affects the water in our bodies in the same way as it
affects the ocean tides. Legends say that werewolves appear when
there is a full moon.
*You need more water during and after exercise because you lose
water by sweating and you need to replace the water that is lost.
*Water freezes at 0℃ (32℉). When i t freezes, it changes into ice. Water boils at 100℃(212℉) when it changes its form into a gas, becoming steam.
2: Look and think
* Choose the write answer
1 You could live without water for a few ______.
a days
b weeks
c hours
2 Your body needs about ______ liters of water daily.
a two
b four
c eight
3 When you exercise, the amount of water you need _____.
a increases
b decreases
c remains the same
4 When you freeze water, it becomes a _______.
a liquid
b solid
c gas
5 About _______ of the earth is covered by water.
a one third
b one half
c two thirds
6 The scientific symbol for water is ________.
a H2O
b HO2
c H2O2
* Use the picture to put these sentences in the correct order.
( ) It flows to the sea.
( ) It runs into streams and rivers.
( ) It rises from the sea to the sky.
( ) Water falls from the clouds as rain.
( ) It falls as rain again.
Homework:
Preview the text: Water talk
The second period
Teaching aims:
1 Try to understand the whole lesson and read it fluently. The tone
and pronunciation should be basically right.
2 Learn the new words and phrases.
Teaching aids:
Multimedia equipment
Teaching Important Points :
How to understand the test completely .
Teaching Difficult Points :
Teaching Procedures:
1: A Free talk
(Ask two Ss to talk about some measures we use to save water and say the following.) T: Very good . Thank you for your performance.
We have learnt that water is very important and we don’t have enough water in the world. If we don’t have water in our dail y life, the situation will be terrible and we all will die. Some people in other
places are suffering from lack of water, such as African people. We
should treat every drop of water seriously and should no waster even
a drop of water.
Show t he text on the screen then give brief introduction to the students and then let Ss read the new text after the recording .
2: learn some new words.
