人教版B8 Unit 3 Inventors and inventions Warming up课件28张

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名称 人教版B8 Unit 3 Inventors and inventions Warming up课件28张
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科目 英语
更新时间 2015-05-24 09:24:50

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课件28张PPT。Warming up Unit 3 Inventors and inventionsHow can you divide 13 oranges among 9 children fairly?make orange juiceCreativityHow to be a good inventor?Creative
Education
Hard-working
Practical skills
Determination
Patience … CuriousCreativePerseveringIn groups, discuss the inventions you know and then make a list.telephone 1876airplane 1903television 1923 colour television 1940photocopier 1937air conditioner 1902electronic digital computer 1942atomic bomb 1945credit cards 1950Penicillin 1928
(青霉素)X-ray 1960Among the inventions above, which invention do you think is the most important one? Why? How did they change people’s daily lives? DiscussionA discovery An invention= =A discovery An invention1 Look at the pictures below
and discuss in pairs which
pictures show inventions and
which show discoveries.an amphibious carThis is the first car that can travel safely on water
and on land. When moving on water, the wheels
of the car turn sideways and move into the body.
The underneath of the car is strong enough to sail
as a boat. It is a prototype and is not yet being
produced for sale. This is an interesting modern
invention.Stephenson’s “Rocket”George Stephenson was one of the first men
to design engines for the railways which were
new at that time. It was a great invention.The structure of DNAThis was a discovery of Francis
Crick and James Watson and
published in 1953. These two
scientists were the first to show
that our genes consist of two
spirals of DNA (called the
double-helix). This work led
directly to the human genome
project in 2003, which
discovered the Structure of
DNA.Work out the rules that will help you
decide what a discovery is and what
an invention is. An invention is ________________________
__________________________________.A discovery is _________________________
__________________________________.existing in nature but not yet knownfinding out something alreadyby human beings not existing before something that was createdan inventiona discoveryuniversal gravitationthe electric bulbNow give some examples of discoveries
and inventions.Electricity1. Systems of delivering
electrical light and heating
to homes and offices
2. Household machines for
washing, ironing, keeping
food cold, etc
3. Computers, telephones,
television, etcThe movement of air1. Airplane jet engines
2. Air balloons, etc Machines to help people with serious diseaseThe circulation
of the blood X-rays1. Body scanners to see
whether you are ill
2. Machines to treat
illnesses (like cancer) discovery
make a discovery
discover
discoverer 发现
作出一项发现
vt. 发现; 发觉; 找到
n. 发现者Explanation Find more information about the great
Chinese inventions (printing, paper,
the compass and gunpowder).Homework