Unit-4--a-visit-to-the-moon教案-(1).doc

. Unit 4 Astronomy: the science of the stars教案 Period 4: Using languageReading: AVisittotheMoon授课教师： 王 艳Teaching objectives：1. 全面理解课文。2. 探究练习单元重点短语和句型，提升语言运用能力。3. 学习英语，热爱科学。Teaching important points:1. Comprehending the whole passage, and be able to grasp the key points from it.2. Master the important words and phrases.Teaching difficult points:1. How to figure out the key points from the reading passage.2. Learn to use “times as as” Teaching procedures:Lead in : Good morning, everyone. Today, we are going to learn the second reading passage in unit 4-a visit to the moon. Through this period, we will have a competition. I will divide you into two groups, the winner group will not need to do todays homework. Is it exciting? Ok, so try your best to win! Lets begin!Step 1. Pre-view check:1. 有机会做某事 have a chance to do sth 6. 既然 now that2. 去旅行 make a trip 7. 过了一会 after a while3.出发，起航 be off/set off 8. 熟悉，掌握，理解 get the hang of 4. 靠近，接近 get close to 9. 玩的开心enjoy oneself5. 高兴，振奋起来 cheer up 10. 爆发break outStep 2CompetitionDoyouwanttovisitthemoon?Do you know whothe first person that stepped onto the moon was? Lets see who know more about the astronomy.Part 1: True or False1. The earth moves around the sun.2. It takes the moon one day to move around the earth for a round.3. Earth is the only planet moving around the sun.4. There is atmosphere on the moon.5. There is no gravity on the moon.Part 2: Multiple Choices: 1._ was the first person landing on the moon? A. Armstrong B. Yang liwei C. Tom Cruise D. Issac Newton2. When did Armstrong land on the moon? A. 1921 B. 1969 C. 1954 D. 19493. Who is the first Chinese astronaut to go into space? A. Yang liwei B. Nie haisheng C. Fei junlong D. Zhai zhigang4. When did Yang Liwei go to the space? A. Oct, 2003 B. Jan, 2003 C. Oct, 2004 D. Jan, 20025. So far, how many countries have succeeded in sending people up to space?A. Two B. Three C. Four D. FiveStep 3 Fast reading: Read the passage quickly, and find out the topic of each paragraph:Para( ):ThethingsIdidonthemoon.Para( ):Weturnedbacktotheearth.Para( ):Lastmonth,wevisitedthemoon.Para( ): HowtheforceofgravitychangedwhenwetraveledfromtheearthStep 4:Detail readingPlease read the passage and underline the sentences about the change of the gravity and our weight during the journey.(match) The change of gravity On the moon disappearingGravity in space strong On the earth very lightThe change of my weight On the moon heavyWeight in space weightless On the earth weigh less (one -sixth)Step 5 SummaryLastmonthIvisitedthemoonwithmyfriend.Beforeweleft,Iwastoldtheforceofg_wouldchangethreetimesonourjourney.Thenwetookoff.Aswelefttheearth,Ibecameveryh_.Graduallytheweightl_.WhenIwasinspace,itd_.Wef_weightlesslyinthecabinandIc_.WhenIwasonthemoon,Iwassurprisedtofindoutevenwalkingneedslotsofpracticen_gravitychanged.Thereturningoftheearthwasveryf_.Wewereamazedtowatchfireb_ontheoutsideoftheship.Step 6.Languangepoints1. But when I try to step forward, I found I was carried twice as far as on the earth and fell over.twice as as “是的两倍 ” 1. “A + be + 倍数 + as +形容词原级 + as + B”.倍数 2.“A + be + 倍数 +形容词比较级 + than + B ” 3.timesthe名词（size, height, weight, length, width）of即学即练：1.1）The library in our school is six times as big as that in yours. 2）The library in our school is _ _ _ than that in yours. 3）The library in our school is _ _ the _ of that in yours. 2.这条河是那条河的两倍宽。 1.)_2.)_3.)_ 3.这块石头的重量是那块石头的三倍。1.)_2.)_3.)_2.“Oh, dear,” I cried, “walking does(表强调) need a bit of practice now that gravity has changed.”now that+ 从句: 既然；由于eg. Now that you have finished the work, you should have a rest. (1.) 既然你来到这里，你就应该好好学习。_ (2.)_youve got a chance, you might as well make full use of it.A.Now that B. After C. Although D. As soon as3. 3. We watched, amazed as fire broke out on the outside of the spaceship as the earths gravity increased.break out:（ 指战争，灾难，疾病等的）爆发与break相关的短语:break down 打破; 毁掉; 坏掉 break in 破门而入; 打断 break through突围; 突破break up 打碎; 拆散; 分裂; break ones word 食言; 说话不算数1.）The bridge _in last earthquake.2.）