Unit 5 Lesson 25 Let's Do an Experiment学案 （含答案）冀教版九年级全一册

Unit 5 Lesson 25 Let's Do an Experiment!
【学习目标】
1.通过基础练习,能记住并正确使用本课时的重点单词和重点短语。
2.通过对比训练,能够确定定语从句的先行词和关系词。
3.通过合作探究,能够描述实验过程,理解实验的原理。
【预习导学】
一、单词速记
1.实验;试验　 　
2.广口瓶;罐子　 　
3.上部;上边　 　
4.倒出;倾倒　 　
5.正确的;恰当的　 　
6.科学的　 　
7.方法;办法　 　
8.雨衣　 　
9.力量;迫使,强迫　 　
10.压力;压强;挤压　 　
11.得出结论;断定　 　
二、短语速记
1.do an experiment
2.fill...with...
3.turn...upside down
4.take...off...
5.涌出
6.科学的方法
7.确信
8.空气的力量
三、想一想
1.文中提到Danny发生什么事情了
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2.Danny的爸爸带Brian去了哪儿
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3.通过句子“Danny's father gets dressed quickly.”,我们学习了get dressed的用法。举一反三,你可以用这个短语说一些句子吗
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【答案】
一、
1.experiment　2.jar　3.upside　4.pour　5.correct　6.scientific　7.method　8.raincoat　9.force　10.pressure　11.conclude
二、
1.做实验
2.用……装满……
3.把……翻转;倒过来
4.把……拿开
5.pour out
6.scientific method
7.be sure of
8.the force of the air
三、
1.His stomach hurts and he has got a high fever.
2.They drive to the hospital.
3.The little girl can get dressed by herself now.
【合作探究】
任务驱动一 单词学习
1.连一连。
2.用方框内所给单词的适当形式填空。
experiment　method　pour　correct　force
(1)I won't 　 　 anybody to do anything.
(2)It's the best 　 　 of working out the math problem.
(3)The students are doing 　 　 in the lab.
(4)I think you've made the 　 　 decision.
(5)I am thirsty. Will you help me 　 　 the coffee
任务驱动二 听力训练
1.听本课时内容,把听到的词组填入表格中。
序号 词组
1 　 　
2 　 　
3 　 　
4 　 　
2.根据上面的表格词组造句。
序号 词组 造句
1 　 　
2 　 　
3 　 　
4 　 　
◎学法指导:边听边思考设置的任务。
任务驱动三 阅读训练
1.Read the lesson.
2.Read the lesson and answer the questions.
(1)Where does Danny think they should do the experiment
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(2)What keeps the water in the jar
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(3)Why does Danny put on his raincoat
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(4)What does Danny conclude
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3.Read the experiment. Then fill in the correct words or expressions.
First, fill the glass jar with 　 　. Second, put 　 　 cardboard over the jar. Third, turn the glass jar over 　 　. Hold your hand on the cardboard for 　 　. Fourth, remove your 　 　 from underneath the jar. What happens The jar of water is 　 　,but the water stays in the jar. This is because 　 　 pushes the cardboard onto the jar. There is more air 　 　 the jar than 　 　.
4.反复听录音并跟读。熟记课文,并借此来复述课文,训练口语表达。
任务驱动四 小组活动
1.以小组为单位,完成实验并且描述实验的步骤。
2.Listen and sing along.
　　　　What is science
Can you explain
Please make it easy for my brain.
It's about making observations.
Why do onions make me cry
Why do clouds go by
What keeps the birds in the sky
That's just science.
It's about matter-the universe.
Why does a car stay on the road
Why is there green all over a toad
Why can't I carry a heavy load
That's just science.
【答案】
任务驱动一
1.
2.(1)force　(2)method　(3)experiments　(4)correct
(5)pour
任务驱动二
1.turn...upside down　pour out　scientific method　take... off
2.turn...upside down
He turned the glass upside down.
pour out
She poured out her worries to the doctor.
scientific method
They teach scientific methods in high school.
take... off
Please take your hands off the head.
任务驱动三
2.(1)Outside.
(2)The force of air.
(3)He is afraid that he will get wet.
(4)He concludes that air is stronger than he thought.
3.water　a piece of　quickly　a few seconds　hand　upside down　air pressure　outside　inside
【知识超市】
[命题点一]Then I turn the jar upside down and take my hand off the cardboard. 然后, 我把瓶子倒置, 手离开纸片。 　
turn... upside down是动词短语,意为“把……翻转,倒过来”,相当于turn... over。如:
Don't turn the box upside down/over. 不要把箱子倒过来。
◎拓展:
upside down 意为“颠倒, 倒转; 乱七八糟”;right side up意为“正面朝上”。
◎拓展
take off 还有“脱掉; 摘掉;起飞”的意思。
如:
The plane will take off at 2:00 p.m.飞机将在下午两点起飞。
对点自测
连词成句。
1.juice, screen, take, the, off, the
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2.took off, he, wet coat, my
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3.take off, please, dirty, the, shoes
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【答案】
1.Take the juice off the screen.
2.He took off my wet coat.
3.Please take off the dirty shoes.
[命题点二]I am so sure of my theory that Brian can do the experiment over your head and I know you won't get wet. 我十分确信我的理论, Brian可以在你的头上方做这个实验, 并且我知道你不会被淋湿。 　
句中be sure of意为“确信”,后接名词、代词、动名词或从句作宾语。如:
I am sure of what he said. 我确信他所说的。
◎拓展:
(1)be sure to do sth. 意为“一定会做某事”。如:
His team is sure to win. 他的队一定会赢。
(2)“be sure + that从句”意为“确信……”。如:
I am sure that he can succeed.我确信他能成功。
(3)“make sure + that从句” 意为“确信,查明,弄清”。如:
She looked around to make sure that she was alone.她环顾四周,确信只有她一个人。
(4)for sure意为“无疑,肯定”。如:
He will be here for sure within an hour.他一小时之内肯定会到这儿。
对点自测
根据汉语意思完成句子。
1.他近来不太自信。
He's not so 　 　 　 　 himself these days.
2.我相信我比他跑得快很多。
I 　 　 　 　 　 　 I can run much faster than him.
3.没有人确切地知道发生了什么事。
No one knows 　 　 　 　 what happened.
【答案】
1.sure　of
2.am　sure　that
3.for　sure
2