高一英语Unit16 Scientists at work 课件2人教版

Unit 16 Scientists at workTeaching goals:1. Talk about science and scientists2. Practice giving instructions.3. Learn to write an argumentative essay.4. Discuss and evaluate Pros and Cons.Astronomical telescopeThe nature of lightning Question : When youre doing experiment in a lab, what should you pay attention to ?Student1: We shouldntt enter the lab without a teacher.Student2: We should follow the teachers instructions. Student3: Dont touch anything without teachers permission.Students: -Listening 1. Listen to the tape. Tick the things that Mrs. Zhu talks about.( ) safety in the lab ( ) gloves ( ) long hair ( ) experiments ( ) shoes ( ) liquids ( ) car accidents ( ) gases ( ) flames 2. Listen carefully and answer the following questions. （1） What is the most important thing students should remember?Safety comes first!（2） What is the first thing students should do when they come into the lab ?Follow the teachers instructions. （3） Why should students be careful smelling from bottles ?Bottles may contain dangerous gases. （4） What is to be done when anything gets into your eyes ?Immediately wash your eyes with a lot of water.（5） What should students do before leaving the lab ?Clear everything away and leave the classroom neat and clean. Wash your hands with water and soap. Turn off the lights and shut the windows.Speaking Example: Building a High-speed Maglev Train fast and clean / it has no wheels and no engine / it doesntt make any noiseAdvantages Disadvantages It a waste of money. Its much too expensive.Advantages DisadvantagesCloning Nuclear energyComputersSpace flightOral practice:Useful expressionsAdvantages Disadvantages It is good for the economy.It is too expensive.It can help many people in the future.It is dangerous or bad for your health.It is clean and does not pollute the air.It is bad for the environment. It is important for science.It is unnecessary.It brings people more comfort.Some people will use it for other things. Pros ConsUseful / help medical research / save some rare species so that many animals will not die out.Dangerous and unnecessary / unnatural / people look the same /Cloning Pros ConsNuclear energyThe best way to make electricity instead of coal and oil / limitless resource / clean and doesntt pollute the air / cheap and good for the economy / used in military affairs (军事）Nuclear waste is dangerous for peoples health and environment / expensive to build and keep functioning safely / unnecessary Pros ConsComputers make communication faster and store much information / important for science / good for economy / easy and useful in many respectsmake people lazy / be into computer games / virus(病毒）病毒）/ have bad effects on people and society Pros ConsSpace flightsInteresting and exciting / be useful for scientific research on outer spaceexpensive and dangerous / used by the armyHomework Review the new lesson and try to summarize how Franklin did experiments.