仁愛版初三英語上冊全冊教案5

step 3  consolidation 第三步  鞏固(時間:10分鐘)
通過復述及完成短文填空的方式，鞏固1a。
1. (讓學生再讀1a，完成1b。)
  t: read 1a again and finish 1b。
  (核對答案。)
2. (讓學生根據關鍵詞復述1a，加深理解，提高表達能力。)
t:  please retell the passage according to the key words on the blackboard. i will say the key words. you say sentences together, ok?
ss: ok.
(板書關鍵詞及短語。)
mars, fourth, named, diameter, a distance of, tell, because, bright red, ball, storms, gravity, temperature, oxygen, eight months, closest, searching for
t: mars and fourth.
ss: mars is the fourth planet from the sun in our solar system.
t: named.
ss: it is named after mars, the roman god of war.
…
3. (出示幻燈片，完成對火星的介紹，鞏固1a內容。)
mars, the      planet of the solar system, goes around the sun at a      of about 228 million kilometers. its      is 53% as wide as that of the earth. it looks like a      and      ball. it’s very beautiful. but during      and     , strong      can cover the whole     of mars. the gravity on the surface of it is about      as      as it is on earth.
step 4  practice 第四步  練習(時間:12分鐘)
小組活動。根據1c的問題，展開討論，組成對話，然后導入并學習2。
1. (兩人一組討論1c中的問題，并安排兩或三組學生匯報。培養學生自主學習和創新能力。)
t: we learned a lot from 1a about mars just now. please discuss the following questions with your partner. then make conversations in pairs. after that i’ll ask two or three pairs to act in front of the class.
(三分鐘后，讓部分學生進行對話。)
t: boys and girls, have you finished your discussion? s1 and s2 , please!
s1: does mars have a good climate for plants?
s2: of course not. that’s impossible.
s1: why?
s2: because the temperature on mars is between -138℃and 28℃.
s1: oh, i see. is mars a useful place to dry fruit?
s2: no, i don’t think so.
s1: is mars a good place for human beings to live?
s2: no, because it is too cold for people to live on.
s1: the last question. is mars a comfortable place for heavy people?
s2: i don’t think so. although the heavy people will be lighter on mars, it’s still not a comfortable place for them to live. do you agree with me?