初三Unit15TheSecondPeriod教學(xué)設(shè)計

1、初三Unit 15 The Second Period教學(xué)設(shè)計 Teaching Aims and Demands1 Knowledge Objects（1） Key VocabularyEndangered, mangrove, swamp, habitat, aquatic feed, underwater, vegetation,Foot, weigh, pound（2） Target LanguageHow big are manatees?Theyre about 10 feet long and they weigh about 1 000 pounds2 Ability Obje

2、cts （1） Train students listening ability （2） Train students speaking ability （3） Train students the ability of using grammar focus3 Moral ObjectWe must be fully aware of the importance of reducing pollution and protecting animals Teaching Key Points1 Key VocabularyEndangered, mangrove, swamps, habit

3、at, aquatic feed2 Target LanguageHow big are manatees?Theyre about 10 feet long and they weigh about 1 000 pounds3 StructuresPresent progressiveWere trying to save the manateesPresentManatees eat about 100 pounds of food a dayPast with used toThere used to be a lot of manateesPassive voiceIn 1972, i

4、t was discovered that they were endangeredPresent perfectSome of the swamps have become polluted Teaching Difficult Points1 the target language2 How to train students listening ability Teaching Methods1 Listening method to improve students listening ability2 Pair work to make every student work in c

5、lass3 Review, explanation, inductive methods Teaching Aids1 A tape recorder2 The blackboard Teaching ProceduresStep RevisionCheck homework Get some pairs to act out their conversations When they work, the rest of students also guess what animals they are talking aboutStep 2aThis activity provides gu

6、ided listening practice using the target language Look at the picture Ask, what can you see in the picture? （A manatee is in the water）Go through the instructions with the class You will hear two people talking about manatees Listen and draw a line between each word and its definitionRead the sample

7、 answer Then say, The word endangered means there arent very many of this animal left in the world The manatee is endangered because there arent very many of these animalsPlay the recording for students the first time This time students only listen to the recording carefully Play the recording a sec

8、ond time This time students draw lines between each word and its definitionCheck the answers with the classAnswers1 b 2 d 3 a 4 cTypescriptBoy: Can you tell us about the manatees, please?Man : Sure Were trying to save themBoy: Why? Are they endangered?Man : Yes There used to be a lot of manatees, bu

9、t now there arent very many of themBoy: Do you know how many there are?Man : At this point, there are only about 2 500 in the U S In 1972, it was discovered that they were endangered Since then, the government has passed laws to protect themBoy: Where do they live?Man : Their favorite habitat is the

10、 water under the trees in mangrove swampsBoy: And why are they endangered?Man : Some of the swamps have become polluted Also, there sometimes isnt enough food for all of them As you can see, theyre large The average manatee is about three meters long and weighs about 1 000 pounds They need about 100

11、 pounds of aquatic feed a dayBoy: Aquatic feed?Man: Oh, thats underwater plants and vegetation Thats what they eatStep 2bThis activity provides listening practice u-sing the target languageGo through the instructions with the class Look at the headings in the chart and the blanks next to each headin

12、g You will hear the same recording again This time listen carefully to what both people say and fill in the blanks in the chart Look at the sample answer The two people on the recording are talking about manatees, so you write the word manatee after the words kind of animal in the chartPlay the reco

13、rding again Get students to fill in the blanks in the chart Check the answers with the classAnswersKind of animal: manateeNumbers: 2 500 in the U SHabitat: water under trees in mangrove swamps Reason why they are endangered: swamps polluted, not enough foodDescription: large, three meters long, weig

14、hs 1 000 poundsStep IV 2cThis activity provides guided oral practice using the target language Look at the sample conversation in the box Invite a pair of students to read it to the classSA: How big are manatees?SB : Theyre about l0 feet long and they weigh about 1 000 poundsRead the instructions al

15、oud to the class Each pair of students can make a conversation using information from Activities 2a and 2b Let students work in pairs While they are working, move around the classroom, checking the progress of the pairs and offering help as neededWhen students finish the work, ask one or two pairs t

16、o say their conversations to the classConversation 1SA: Where do manatees live?SB: They live in the water under the trees in mangrove swampsConversation 2SA: Why are manatees endangered?SB : Because some swamps have been polluted And there isnt enough food for all the manatees, eitherStep Grammar Fo

17、cusLook at the grammar focus box Invite five students to read the statements to the classWere trying to save the manages Manatees eat about 100 pounds of food a dayThere used to be a lot of manatees In 1972, it was discovered that they were endangeredSome of the swamps have become pollutedPut the cl

18、ass in five groups and ask each group to become experts in one of the verb tenses and presents a review of that tense to the rest of the class Have the students explain what the verb tense is used for and then give some sample sentencesStudents can look back at the units where their verb tense was p

19、resented or practicedPresent progressive: Reviewed throughout the bookPresent: Reviewed throughout the book Past with used to: Unit 4 Passive voice: Unit 10Present perfect: Unit 14While the groups are working, walk around the classroom helping the students with their explanations and their sample se

20、ntencesAsk one student of each group to show their work As the students show their work, ask questions and correct any errors in their explanations or sentences（1） Present progressive: One form of the verbs that express action that continues over a period of time, also called Present continues tense

21、 The structure is am/is/are+ -in For example: He is reading a story book（2） Present: It is used for indicating action that is usual and habitual The form of the verb is do or does For example:I go to school by bikeShe does her homework every day（3）Past with used to: The structure of used to + info i

22、ndicates a constant or-frequent practice in the past For example:I used to go swimming when I was a child（4）Passive voice: The form of the verb is be + pp in the sentence For example:Our classroom is cleaned every day（5） Present Perfect: The from of the verb is have/has + p P For example:I have already finished my homeworkStep SummaryIn