B2U3优质课.ppt

1、unit3 computers,临朐实验中学 田瑞雪,Guessing game,I am very old now. I was born in China. Many people used me for calculating in the past, but now I am a bit lonely because they dont like me now. Do you know who I am?,abacus,Guess:,I am very small. I can be used for calculating. In China, a lot of students u

2、se me when solving mathematical problems. Do you know who I am?,calculator,I can be used for calculating. Besides, I can also be used for watching DVD, sending e-mails and communicating through the Internet, etc.,computer,Do you know who I am?,notebook computer/ laptop,huge computer,PDA,robot,PC,In

3、what order do computers develop ?,robot,huge computer,PDA,the history of the computer,abacus,?,Check the homework:,Answer the following questions:,1. Who is telling the story?,5.In what order does the computer tell the story ?,3.Who built the first analytical machine?,4.Who was my real father ?,A co

4、mputer.,Time.,Charles Babbagge,Alan Turing.,2.Whats the main idea of the text?,The development / history of computers,Task 3 Look at the timeline below. Fill in the blanks with Information from the passage.,1642: _ 1822: The Analytical Machine was made by Charles Babbage. 1936: _ 1940s: _ _: The fir

5、st family of computers was connected to each other. 1970s: _ Now: _,The computer began as a calculating machine.,The computer grew rapidly both in size and in brainpower.,Computers had grown as large as a room.,1960s,Many new applications have been found for me.,Computers connect people all over the

6、 world together.,Read the passage again and complete the chart below.,Over time I have been changed a lot.,analytical machine,universal machine,PC,laptop,These changes only became possible as my memory improved.,transisters,chips,netwok,World Wide Web,Since the1970s many new applications have been f

7、ound for me.,trade,robots,mobile phones,medical operations,space rockets,providing a life of high quality,True or False,1.I began as a calculating machine in Japan in 1642. 2.Although my shape became smaller, my memory became larger. 3.I was brought into offices and homes since the1970s. 4.Since I w

8、as born I have been built to replace human race.,France,help,Consolidation: Fill in the blanks according to what we have learned. I began as a _ _ in 1642 in France. In 1822 I was built as an _ _ . Then in 1936 Alan Turing wrote a book and built a _ _. As time _ _, I was made _. These changes became

9、 possible as my_ improved. In the 1960s they gave me a family connected by_ _. Now people call it the World Wide Web. I have been used in _ _and_ since the 1970s. So I became PC. I am happy to become a devoted friend and helper of the human race.,calculating machine,analytical machine,universal mach

10、ine,went by,smaller,memory,a network,finance trade,communication,Brainstorm Do you know in what ways computers are used today? (Work out a list and compare it with your partner.),search for ,see movies,listen to music,read books and magazines,send emails to friends,download music and films,buy things on line,play games on the computer,use a computer for school work,Chat with,What will the computer be like in the future ?,Guess!,A toy?,A handbag?,Computers,Designing,What is the computer in the future like? Design your own computer and describe it in the following ways: What does it l