人教新课标必修三 Unit 4 Astronomy Using language课件.ppt

The photo from the moon Task 2. scanning Careful reading Careful reading The change of gravity Careful reading Careful reading Discussion * Do you want to visit the moon? Warming up----Brainstorming (2m) China’s first astronaut--------Yang Liwei Write down the three ways in which gravity changed for Li Yanping. Reading I----scanning skimming (2m) On the moon In space Left the earth The way gravity changed 3. It became very light. The gravity became very strong. 2. The gravity disappeared. His weights changed three times too. Now write them down. On the moon In space Left the earth The weight changed He became very heavy. He had no weight and could float around like a feather. He was about one-sixth of his weight on the earth. 1. Who do I have a chance to travel to the moon with ? 2. How did we travel to the moon? 3. What’s the writing order in this text? 4. How many times would the force of gravity change on our journey? Which change would be the most powerful? Li Yan Pin , an astronomer by spaceship Three times , the first time Leaving for the moon Please read Para.2 and underline the sentences about the gravity and our weight during the journey? on the moon in space gravity very light disappearing strong on the earth Walking on the moon What happened to me when I tried to step forward? Why? I was carried twice as far as on the earth and fell over. Because the gravity has changed. Returning to the earth Because fire broke out on the outside of the spaceship as the earth’s gravity increased. 1.Why was returning to the earth very frightening? 2.How did I feel? I was very exhausted but very excited too. Supposing you were the first Chinese astronaut walking on the moon. What will you say to the world? (at least 2 sentences) In group of four Spokesman Time limit :2min *