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1、Unit 3 Inventors and inventions,Warming Up,How can you divide 13 apples among 9 children fairly?,make apple juice,Creativity,Lets play a game,Guess what or who it is according to the description, make it as quick as possible. Look at the screen, the sentences will be presented one by one,1. Its made
2、 of plastics and metal.,2. It looks like a small box.,3. The invention can contact someone while you are on the move.,1. The inventor is from America.,2. He is one of the father of inventions.,3. The inventor invented the bulb.,1. It is a machine.,3. The first one of it was as big as a room.,2. You
3、can do complicated counting with it.,4. It develops quickly nowadays.,1. The inventor was born in Scotland but lived in America.,2. He worked for the deaf people communication and education.,3. He invented telephone.,In groups, discuss the inventions you know and then make a list.,The compass,airpla
4、ne 1903,television 1923,colour television 1940,photocopier 1937,air conditioner 1902,What are they famous for ?,Edison invented the electric bulb. But a lamp cant give light without electricity. Did Edison also invented electricity? Can electricity be invented? Is electricity an invention or discove
5、ry?,Thinking,A discovery,An invention,= =,A discovery,An invention,1 Look at the pictures below and discuss in pairs which pictures show inventions and which show discoveries.,an amphibious car,This is the first car that can travel safely on water and on land. When moving on water, the wheels of the
6、 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.,Stephensons “Rocket”,George Stephenson was one of the first men to design engines for the railwa
7、ys which were new at that time. It was a great invention.,The structure of DNA,This 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 t
8、he 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 known,finding out something already,by human beings not existing
9、before,something that was created,an invention,a discovery,universal gravitation,the electric bulb,Now give some examples of discoveries and inventions.,Electricity,1. Systems of delivering electrical light and heating to homes and offices 2. Household machines for washing, ironing, keeping food col
10、d, etc 3. Computers, telephones, television, etc,The movement of air,1. Airplane jet engines 2. Air balloons, etc,Machines to help people with serious disease,The circulation of the blood,X-rays,1. Body scanners to see whether you are ill 2. Machines to treat illnesses (like cancer),Free Talk,Now think of modern inventions you are familiar with, discuss in groups and try to describe them.,Find more information about the great Chinese inventions (printing, paper, the compass and gunpowder).,Homework,
