【正文】 S1: It’s said that Emperor Huang invented it. T: What is it used for? T: Yes, you are right. Today, we’ll learn how people know the directions. Step2: Let the Ss read the questions on page 88. Learn the new word explorer. T: Now, before reading the passage, you had better read the questions on page 88. You can learn the word “explorer” by word formation “explore (v)+er=explorer(n)”. S2: It’s used for giving directions. Read the questions on page 88. Learn the new word explorer. 3 Whilereading (8mins) Individual work Group work Step 1: Let the Ss read 1a and find the answers to Question1, 2 and 3. T: Now, read 1a and find out the answers to Question1, 2 and 3. When you finish, raise your hand. T: I think we should check the answers now. xxx, could you please answer Question 1? T: Wonderful! Question 2, Read 1a and find the answers to Question1, 2 and 3. S: The early explorer used the stars to know where they were. S2: In bad weather, people couldn’t see the who? T: What is a GPS, who knows? Step2: Let the Ss discuss what the GPS will be used for in the future. T: We know GPS is useful to us. What is it used for now? T: Oh, you have good knowledge of GPS. Now, please discuss what the GPS will be used for in the future. T: Have you finished discussing? T: Which group wants to be the first? T: Smart idea. But how do you make it e true? T: Other groups? T:… stars, so this method didn’t work. S3: GPS is like a manmade star. It’s very useful to us. People can use it to find out their position. Discuss what the GPS will be used for in the future. S1: It’s used for transportation. S2: It’s used for sending satellites. S3: It’s used for planes. S4:… Ss: Yes. S1: We can use it to find the missing old people or child