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1、Module7 Unit1,Living with technology,Which do you think is the most useful?,How have these inventions changed your life?,Reading The evolution of video and sound devices,Reading strategy:understanding headings,Headings can show you how a text is organized.They can give an idea as to the contents of
2、each section.,The structure of the text:,The evolution of video and sound devices,TV,Sound and video recorders,Early history of TV,The modern age:satellite TV,Early history of sound recorders,Sound and video recorders,Sound and video go digital,The future,Early history of TV,The development of TV br
3、oadcast,People who contributed to the development,The development of color TV,Early history of TV,How many aspects are mentioned in this part?,The first public TV broadcasts were made.,The first long-distance TV broadcast was made between tow countries.,Regular public broadcasting began.,in 1925,in
4、1928,in 1928,in 1929,in 1928,Read the first paragraph,then fill in the form.,The development of TV broadcast,People who contributed to the development,John Logie Baird:His system was _ and had _.He _ in 1928.Philo Farnsworth:He _ in the development of TV in the late 1920s and early 1930s._ used by M
5、odern TVs were first discovered by Farnsworth.,primitive,many drawbacks,constructed the first colour TV,made important breakthroughs,Many of the principles,The development of color TV,When was the first color TV constructed?When did regular color broadcasts begin?,The first color TV was constructed
6、in 1928.Regular color broadcasts began in the USA in 1951 and in 1967 in the UK.,The modern age:satellite TV,The features of satellite TV:be broadcast live vast distances,with everyone receiving the same broadcast at the same time be accessible to people who live far away from cities benefit most pe
7、ople,Early history of sound recorders,It had to be wound up by hand.,He made the first recording of a human voice in 1877.,Thomas Edison,The first record player,Emile Berliner,Sound and video recorders&Sound and video go digital,The development of sound and video recorders,192819501960s1970s19821993
8、1995,steel tape&paper tape plastic tape portable cassette players&video recorders small and cheap video recorders CDS VCDs DVDs,The future,This will soon make records,cassette recorders,CDs,DVDs and even TVs things of the past.,Translate the sentence.What does“this”refer to?,Choose the development of TV or sound and video recorders.Try to tell your partner about its development.Remember that you should organize your report in order of time.,Activity,What are some possible advantages and disadvantages of having sound and video devices in our lives?,Discussion:,Homework,Finish A1,A2 on P 98.,
