高一英語(yǔ)備課《Module 5 A Lesson in a Lab》4th period教案 外研版必修1

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111 The Fourth Period The General Idea of This Period In this period, we’re going to learn Vocabulary, Listening and Writing, Grammar 1 & Grammar 2. Teaching Aims 1. Learn to say the decimals. 2. Develop their abilities of listening and writing. 3. Learn the grammar: Degrees of Comparison. Teaching Difficult Points 1. Improve the students’ listening ability. 2. Master the grammar: Degrees of Comparisons 12. Teaching Methods  Finding, deducting. Teaching Aids 1. a computer  2. a projector  3. the blackboard Teaching Procedures  Step 1 Revision 　Show their homework exercises on the real object objector. Teacher gives some comments on the work. Step 2 Look and learn 　 Learn to say the decimals by looking at Part 1 on Page 46. Give them two minutes. Work on their own first and then say to each other in pairs, paying attention to the numbers before and after point. Step 3 Write and say 　 T: Now write and say the numbers as decimals. S: Point five. S: Two point two five. S: (naught) Point seven five. S: Thirty point five. S: Twelve point three. T: Learn to say the fractions on Page 46. Work in pairs and report the answers to the class. Keys: a half　two and a quarter three quarters　 thirty and a half　twelve and three tenths Step 4 Practice 　 Write 5 fractions for each one to say. Step 5 Listening and writing 　 T: Read the listening material and try to predict what you will hear. (It’s a good way to train their listening ability.) Play the cassette for them to listen. Listen another time for them to complete the description of the scientific experiment. Listen a third time. Step 6 Grammar 1: Degrees of Comparison 1 　 Learn how to use multiple in degrees of comparison T: In junior middle school, we learned the sentence: “The earth is larger than the moon.” We add “forty-nine times” to the sentence on P43.Have you noticed the word order? T: What do we say “兩倍” in English? S: Two times. T: Is it right? S: No. It’s twice. T: Now please answer the questions in Part 1, P43. S: It should be like this: I went there twice. T: What about No.2? S: 20 metres. T: No.3? S: Object B is 400 kilogrammes. Step 7 Practice 　 Part 2 SB, P43 Work on your own first and then check the answers together. 1. Yangtze River is about three times as long as Songhua River. Yangtze River is about three times longer than Songhua River. 2. Winter in Harbin is four times as cold as that in Beijing. Winter in Harbin is four times colder than that in Beijing. 3. Mount Qumolangma is about six times as high as Mount Tai. Mount Qumolangma is about six times higher than Mount Tai. 4. My aunt’s house is twice as large as mine. My aunt’s house is twice larger than mine. 5. Tom weighs twice as heavy as Lily. Tom weighs twice than Lily. Step 8 Grammar 2: Degrees of Comparison 2 　 T: Find the grammatical rules in the first three sentences on P47. S: The first sentence contains the structure “more and more”. T: Good! S: The next two contain the structure “the more...the more...”. A1、2、3　B 2、3　C1 Step 9 Part 2, SB, P47 T: Make sentences according to the example. Work on your own first and then check the answers together. 1. The hot metal is getting bigger and bigger. 2. The magnesium is getting hotter and hotter. 3. The sun is getting stronger and stronger during the morning. 4. The sea is becoming warmer and warmer. Step 10 Assignment 1. Study Parts 3-4 on P47-48.Find out more words or phrases which can modify the degrees of comparison. 2. Wb, Exx. 1-2, P91  Step 11 The design of the writing on the Blackboard 　 Module 5　A Lesson in a Lab The Fourth Period a half two and a quarter three-quarters thirty and a half twelve and three tenths more and more the more...the more... Step 12 Activity and Inquiry 　Degrees of Comparison 2  Activity　Look at these sentences:  1. Come a bit closer.  2. We need rather more than that.  3. It weighs a little more than before.  4. It’ll be a lot heavier than magnesium.  5. Is it any heavier? 6. We need a piece which is (very) much bigger than that. Steps Students’ Acting Teacher’s Organizing 1 Read through the sentences. Ask the students to read through the sentences. 2 Complete the activity individually. Get the students to complete the activity individually. 3 Work in pairs to compare their answers. Put the students in pairs to compare their answers. 111