Unit13 The water planet Tasks which should be achieved in this unit: a. Achieve language skills and related knowledge about the topic of water and the ocean. b. Learn how to make suggestions and how to express opinions. The water is being used to /for. We should/ could. If we , we can . It would be better to c. Vocabulary in this unit: benefit, disadvantage, range, available, pure, mass, float, absorb, stable, bottom; d. Useful expressions: benefit from, range from to., all the way, be made up of, that is, freezing point, break down, mix with, be measured in, take advantage of, keep steady, manage to do. e. Grammar: Review Modal Verbs. 情态动词can, could, may, might, will, would, shall, should, must, cant 等的用法。 1) can /could Jin can speak English well. (ability) Could you please show me the way to Beihai Park? (request) 2) may /might May we see the awards for the teams? (permission; request) She might give you some new clothing. (possibility) 3) will /would The Spring Festival is the most fun. The whole family will come for dinner. (promise; agreement) Often he would dress up like a rich man. (past habit; custom) 4) shall /should The harvest festival begins on Saturday. We shall be there with our friends. (promise; agreement) You should arrive at the airport two hours before he goes. (advice) 5) must /cant Wang Feng wins an award every year. He must be very strong (speculation) You must be joking. That cant be true. (guessing) The First Period Teaching Aims: 1.Learn and master the new words and the useful expressions of this part. Words: cube, sailor, disadvantages, entertainment Phrases: come up with, happen to Useful expressions: The water is being used to/for We should/could If wewe can It would be better 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 Greetings and Lead-inC T: Hello, everyone. Ss: Hello, teacher. T: Attention, please. As we all know, every year during the Spring Festival and Lantern Festival in our country, people like to see the lion dance and guess the riddles. Do you like to guess the riddle, then? Ss: Yes. T: OK. Now I have a riddle. Please guess it. (Teacher uses the multimedia to show the riddle on the screen.) Its very important to all the animals and plants. Its also important to human beings. Its liquid at room temperature. Every day you keep in touch with it. You cant live without it. (a thing) T: Whats it? Ss: Its very easy. Its water. T: Yeah, today we will talk about water. Now please tell me what you know about water. S1: Water is used to drink. S2: Water can be used to water the flowers. S3: I think water can be used to make electricity. CStep Warming upC T: Thank you for your ideas. Next we will make some interesting experiments. Maybe you can learn more about water from the following experiments. S4, would you like to come here to help me? S4: Id love to. T: Now, look at Li Lei and me. We will begin. You should watch the experiment carefully and try to tell me what happens and why. (Teacher puts a bottle of water, a bottle of vegetable oil and an empty glass on the desk.) T: S4, pour some water and some vegetable oil into the empty glass. Other students, please watch carefully. ( A few seconds later.) Ss: Fantastic! The liquid in the glass has become two parts. T: Try to describe it in detail. S5: Let me try. The part above is vegetable oil and the part below is water. But I dont know why. T: Good question. Whod like to answer his question? (Nobody answers his question.) T: Perhaps it is a little difficult to answer it immediately. Now you can have a discussion about the reason for it, using what you have learnt in physics. (Teacher lets students discuss in groups of four. A few minutes later, teacher checks their answers.) T: Who wants to explain the phenomenon? S6: I think water is heavier than oil, so vegetable oil is on the top of the water. T: Who has different ideas? S7: I think we should say that the density of water is higher than the density of vegetable oil, so the result formed. S8: Whats the meaning of “density”? S9:“Density” is “密度” in Chinese. T: Do you agree with the reason for it? Ss: Yes. We agree with the idea. T: As we know, if we pour milk and water into one glass, we cant t