(
课件网) （仁爱科普版）九年级 上 Topic 1 When was it invented Section D 综合复习课 Unit 4 Amazing Science Learning objectives 1 Review Pre-reading 3 While-reading Post-reading 5 Project Summary 7 Assessment 2 4 6 8 Homework 9 1 Learning objectives After learning the lesson, we can: 01 02 03 04 learn some core words and expressions of the text; use the passive voice of the simple past tense more properly. talk about new technology GPS. develop our imagination and creativity by designing our own inventions. It is used for sending satellites or spaceships into space. What’s a rocket used for 2 Review Where was it developed It was developed in Japan. 2 Review When was the digital camera developed It was developed in the 1970s. 2 Review The radio was invented by Guglielmo Marconi in 1895. Who invented the video When was the video invented 2 Review Grammar Passive Voice (Ⅱ) The radio was invented by Guglielmo Marconi in 1895. When was the digital camera developed It was developed in the 1970s. Where was it developed It was developed in Japan. What is a rocket used for It is used for sending satellites or spaceships into space. 2 Review Functions I wish I could go into space some day. I hope your dream will come true. It’s said that he invented more than two thousand things during his life. Inventing is interesting and exciting and everyone can be an inventor. 2 Review explorer My brother dreams of becoming an explorer and traveling to far-off lands to uncover ancient secrets. n. 探险家 3 Pre-reading guiding mark The trail was easy to follow because there were clear guiding marks painted on the trees every few meters. n. 标记点 3 Pre-reading direction If a map shows where my home is, then I can use the compass to point me in the direction toward home. n. 方位 3 Pre-reading position n. 位置 The sun is in a perfect position for taking a great photo of the landscape. 3 Pre-reading direction Game Time 3 Pre-reading explorer Game Time 3 Pre-reading guiding mark Game Time 3 Pre-reading position Game Time 3 Pre-reading It introduces the challenges faced by early explorers when using stars as navigation markers and the great role of the Global Positioning System (GPS). What 's the main idea of this passage Skimming 4 While-reading 1. How did the early explorers know where they were They found out where they were by using stars. Read and understand. 2. What’s the disadvantage of using the stars as guiding marks Its disadvantage is that it didn’t work well when the weather was bad and the stars could not be seen. 4 While-reading 3. What is a GPS Is it useful to use It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It is very useful. 4. What do you think the GPS will be used for in the future The GPS will likely be used for more precise navigation, tracking, and location-based services in the future. 4 While-reading 4 While-reading Watch a vi ... ...
