1. Unit 1 Reading
the Evolution of
video and
sound devices

2. Learning aims
1. To understand the general idea and the structure of the article
2. To focus on and master the reading strategy: understanding headlines
3 To boast their ideas of innovation about future technology

3. Role play: be the guide in the museum
A display about the evolution of video and devices
The early TV
The modern TV
Who developed the first TV set?
Who made the first recording of a human voice? …

4. the revolution of recorders
Structure
the revolution of TV
the revolution of recorders
Future Outlook
Early history of TV
The modern age: satellite TV
3. Early history of sound recorders
4. Sound and video recorders
5. Sound and video go digital
6. The future

5. Reading Strategy: Where can you find these information
The first recording of a human voice
the birth of the first VCD
The invention of the first colour TV broadcasts
the way people benefit from satellite TV
the future expectation of sound and video
Early history of sound recorders
Sound and video go digital
Early history of TV
The modern age: satellite TV
The future

6. Scanning: the revolution of TV
draw the timeline of the development of TV
1929
1928
1938
1951
1962

7. 2. the revolution of recorders
Scanning:
2. the revolution of recorders
T or F questions
1. In 1928, the first tape recorders used to copy sound were made in the USA.
2. Most early recorders employed steel tapes which is why they are heavy and difficult to use.
3. By the late 1950s, video recorders small and cheap enough for home use were introduced.
4. The modern record player was born after Thomas Edison invented a record player that used discs.
5. The VCD is now the standard for recording and playing back video.

8. 2. the revolution of recorders
Q & A
1. Who made the first recording of human voice?
2. What were developed by the late 1960s?
3. Why are CDs often used for storing and playing music?
4. What did most tape recorders begin using as they do today early in 1960s instead of steel ones?

9. Presentation-
retell one part and work in groups

10. Innovation for the future
“ WHO CAN FORSEE WHAT THE FUTURE WILL BRING? ”
Homework:
write an short passage to image the future development of video and sound devices