The world around us教案

2.q:what do animals do to survive in places where it is very hot or cold,where there isn't much water?
a:animals adapt to change in their habitat and try to learn to survive when the conditions of their habitat change.
step 3 reading
t:from last period we know many animals are in danger.then do you know why some plants are in danger and even human beings? let's try to find the answer to the question above from the text and what we can do to stop it.
ask students to read quickly in silence and find the answer to the following question.
q:what can we do to protect the environment?
a:we should create more space for animals and plants.we should stop pollution.
step 4 post-reading
ask students to read the text again and answer the following questions.
1.why do animals and plants become endangered?
a:animals and plants become endangered when their habitat is destroyed or when conditions in the habitat change too quickly or too drastically.the text lists three main reasons: habitat change,the arrival of new species in the habitat,and the overuse of the species itself or the resources in the habitat.
2.a species can become endangered when its habitat is changed or destroyed. can you think of things human beings do that may destroy or cause change in a habitat?
a:various answers are possible. encourage the students to think of human behaviour that can cause problems:pollution, land use, hunting, farming, etc.
step 5 language points
1.as conj.
when in rome do as the romans do.
do you have to feed plants as you feed chickens?
2.take action
i didn't take immediate action.
active adj.
he was active in the 1798 revolution.
3.measure v.&n.
(1)vt.&vi.
we measured the room and found it was 200 feet long and 15 feet wide.
can you wait till i have finished measuring?
(2)n.
an inch is a measure of length.
step 6 listening to the tape
step 7 homework
review words and language points in the text.

lesson 3
main points
words
devote...to...; at present; common; set...free; in the wilds; give a talk; what kind of; explain sth. to sb.; hope&wish; however; one day,some day&another day; stop doing&stop to do...
difficult points
hope&wish
teaching procedures
step 1 revision
1.check the homework
2.ask several students to say something about the wildlife endangerment.
step 2 word study
get students to know something about word formation and go over the use.
1.hope&wish
(1)hope
①for+n.
②to do...
③that...
(2)wish
①for+n.
②to do...
③sb./sth.+adj./done/to do...