Unit-3-Computer-Reading-课件-2021-2022学年人教新课标必修.ppt

高一必修 2Unit 3 ComputersReading Heavy!Difficult! Hard!Tired! Easy!Fast!Free! 情景导入RiddlesI am a magical machine. I can do many things for people , such as calculating , playing games , watching pictures , sending e-mails and so on. Who am I? 学习目标1. Learn about development of computer.2. Get the main idea of the passage.3. Understand the usage of computers and internet. 课前自主学习1.Look up for the relevant information and get the main idea of the passage.2. to search on the internet. monitorkeyboardmousespeaker modemscannerprinterUSB flash dischard disc What’s next?The development of computers? Read the text quickly.1. Who am I ? A. An operator． B. Alan Turing． C. A computer． D. Human race．C2. What’s the passage about?The text mainly tells us a short history of the development of the __________ and its ____________ in different fields.? computerapplications 新课讲解Skimming Find out the topic sentence of each paragraph.The topic sentence1. Over time I have changed a lot.2.These change only became possible as my memory improved.3. Since 1970s many new applications have been found for me. Read the passage and finish the timeline.he analytical machine was made by Charles Babbage.The computer began as a calculating machine.1940sThe first family of computers was connected to each other.The computer grew rapidly both in size and in brainpower.Computers had grown as large as a room.1960s1936 1970s nowComputers were used in offices and homes.Computers connect people all over the world together.Read the passage and finish the timeline. Read the passage again and complete the chart below. Develop-mentEarly daysNameFunction PoorStrongA _________ machineSimplify difficult sumsAn ________ machineThink logically and produce an answer quicklyA _________ machineSolve difficult ______________________calculatinganalytical universal mathematical problems DevelopmentNetwork times________ stored inTubesLargeSmall____________Small chips_______________________Narrow