Unit 3 Reading 一. Reading： read a poster about the Earth 1. Read the title and understand the meanings of the new words “poster” and “Earth.” 2. Warming-up： (1) Inset the cartoon, let students guess what the passage is probably about? It is probably about the Earth. (2) Read a passage Places to remember before they disappear and discuss. (3) Introduce a good friend who is an expert on science. He will teach students some knowledge about the Earth, stars, the Moon, and the Sun. ? We live on Earth. ? Earth is our home. ? About 70% of the Earth is covered by water. ? There are 8 planets in the solar system. ? They are Earth, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune. ? When we look at the sky, we can see billions of stars in the sky. ? We can’t see all with our own eyes, but we can use a telescope to see them. ? We only see 3,000 stars with our eyes. ? It is difficult to know all the stars. ? But the stars appear in groups. This helps us remember them easily. ? They are very beautiful and magic. ? The Moon is 380,000 kilometres away from the Earth. ? The Sun rises from the east, falls down from the west. The Moon moves around the Earth. The Earth moves around the Sun. (4) Know more about the Earth (stars, the Moon, and the Sun). Look at the photos and write the correct words in the blanks. Pay attention: proper noun uses capital (5) Discuss some questions about the Earth. (6) Prediction: look at the photos and the title to predict some important information about this passage. (7) Brain storm to know more things on Earth. 2. while-reading: (1) Vocabulary: choose English explanation, choose correct new words to fill in the conversations, link the English meanings. (2) Learn to use important sentences: there is/are...some...some... Look at the pictures and find the sentences beginning with there is/are...----answer some questions which they will use some...some...----say more sentences like those (3) Language points: some…, some…/there is /are…/provide with/put into (4) Do some exercises. 3. Post-reading: There is a lot of pollution around us. What can we do for our Earth? 4. Do exercises.