外研版必修1 Module 5 A Lesson in a Lab Task & Writing 课件（20张PPT）

课件20张PPT。Module 5
A Lesson In A LabTasks & Writing ——Designed by Yang Hongyan, Da Hekan Senior High School 1Made By Yang HongyanⅠ、Revision1Made By Yang HongyanⅡ、The New Lesson1Made By Yang HongyanOne、Lead-in1Made By Yang Hongyan What will happen when the air in the balloon is released(release:释放)?
　When the balloon‘s mouth is open，the air will push the balloon to move.（删除）1Made By Yang Hongyan Let’s do a small talk(3mins)　
Do you like doing scientific experiments? What are the stages of a scientific experiment?
The stages are as follows: aim—apparatus—methods(stages)—result—conclusion.（删除）1Made By Yang Hongyan If you want to learn scientific subjects well, what qualities should you have in your opinion? Discussion1Made By Yang HongyanTwo、Task1(2mins) Observe the following experiment carefully,guess what the letters are, and then write down an experiment report Three、Task2(10mins)1Made By Yang Hongyan A Secret message1Made By Yang Hongyanwrite a secret message with invisible ink. a lemon, a small container, a pen/a Q-tip(a cotton swab), some white writing paper, a candle and a lighter.the lemon and pour the juice into a container.dip it into the lemon juice. your message in lager letters on a clean sheet of
white writing paper.blow on the paper to dry the lemon juice.light a candle.hold the paper near the candle flame. will gradually appear on the paper. The letters are
brown . the lemon
juice reacts with oxygen in the air.Help1Made By Yang Hongyan Observe the following experiment carefully and then write down an experiment report Four、Task3(10mins)1Does Sodium react with cold water?1Made By Yang Hongyan
to find out if sodium reacts with cold
water.
a container, cold water, sodium, a small knife,
filter paper（滤纸), a pair of tweezers(镊子） (1)Half-fill the container with cold water.
(2)Take a piece of sodium out of the
kerosene and ____ a tiny piece of the
sodium with_____________.
(3)Dry the sodium with the filter paper.
(4)Put the sodium into the water .
The sodium burns, turns/travels
around and makes a noise.Sodium reacts ____ with cold water.An Experimennt Report1Made By Yang Hongyanmosta small knifecutFive、Consolidation1Made By Yang HongyanGW(4mins): apparatus(es), conclusion, reacts, with, experiment, put, cut, scientific This is a _________ _________ done in a lab.
First, get all the ____________ ready on the desk, a container(容器) half-filled with cold water in it, sodium，sodium, a small knife, filter paper（滤纸), a pair of tweezers(镊子）and a small knife.
Secondly, , _____ a tiny piece of sodium ____ a small knife and ____ the sodium into the water.Then it moves around, a fire light will be seen, and it lasts for a while.
We can reach a __________ that
sodium _____ with cold water.
scientific experimentapparatus(es)cutconclusionreactswithput1Made By Yang HongyanSix、Conclusion1Made By Yang HongyanⅢ Sum up(4mins)How can you do a scientific experiment successfully?
First, we need to have an_____ and prepare _________ for the experiment before we do the experiment.
Second, we must use correct________to do
the experiment and observe carefully.
Then we can get the____and draw a________. aimapparatusmethodsresultconclusion1Made By Yang Hongyan Science plays an important role in our daily life. So we should love science. And we should own the scientific attitude towards our work and study.
科学在我们的日常生活中非常重要，我们应该热爱科学，并且我们应该拥有一种科学的对待我们学习和生活的态度。1Made By Yang HongyanⅣ Homework(1min)1、Go on completing the report .
2、Review the whole module.
1Made By Yang HongyanThank you!教师：南郑区大河坎中学
杨红艳1Made By Yang Hongyan