Unit 15 We’re trying to save the manatees!教案

2. target language
how big are manatees?
they’re about 10 feet long and they weigh about 1 000 pounds.
3. structures
present progressive
we’re trying to save the manatees.
present
manatees eat about 100 pounds of food a day.
past with "used to"
there used to be a lot of manatees.
passive voice
in 1972, it was discovered that they were endangered.
present perfect
some of the swamps have become polluted.
ⅲ. teaching difficult points
1. the target language
2. how to train students’ listening ability.
ⅳ. teaching methods
1. listening method to improve students’ listening ability.
2. pairwork to make every student work in class.
3. review, explanation, inductive methods
ⅴ. teaching aids
1. a tape recorder
2. the blackboard
ⅵ. teaching procedures
step ⅰ revision
check homework. get some pairs to act out their conversations. when they work, the rest of students also guess what animals they are talking about.
step ⅱ 2a
this activity provides guided 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 definition.
read the sample answer. then say, the word endangered means there aren’t very many of this animal left in the world. the manatee is endangered because there aren’t very many of these animals.
play the recording for students the first time. this time students only listen to the recording carefully. play the recording a second time. this time students draw lines between each word and its definition.
check the answers with the class.
answers
1. b 2. d 3. a 4. c
tapescript
boy : can you tell us about the manatees, please?
man : sure. we’re trying to save them.
boy : why? are they endangered?
man : yes. there used to be a lot of manatees, but now there aren’t very many of them.
boy : 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 them.
boy : where do they live?
man : their favorite habitat is the water under the trees in mangrove swamps.
boy : and why are they endangered?
man : some of the swamps have become polluted. also, there sometimes isn’t enough food for all of them. as you can see, they’re large. the average manatee is about three meters long and weighs about 1 000 pounds. they need about 100 pounds of aquatic feed a day.