教材分析本课时是本单元的第二课时.docVIP

NSEFC Module 3 Unit 4 Astronomy: the science of the stars Period 1 : Warming up and reading Step 1. warming up lead in T: We learn a lot of subject in school. Do you know what are science subjects? S: Physics, Chemistry, Biology, Geology and Mathematics. T: Do you know some words related to those subjects? Let’s try to match them. Astronomy the scientific study of treatment of diseases and injuries. Biochemistry the study of the chemistry of living things Geophysics the scientific study of the earth’s atmoshphere. Oceans and climate Medicine the scientific study of objects in space, such as planets, stars. comets and “black holes” T: do you know how earth began ? Who knows some story?(show pictures of lengends: Pangu separates the sky form the earth,Nuwa makes men…god…; Bible) There is a more scientific one about how earth began, let’s have a look? See some words first: Solar Violent Carbon Dioxide Oxygen Nitrogen Dissolve Amphibian Reptile Step 2. Reading T: 1. Read the text quickly and divide the text into three parts and match the main ideas. 2. Careful reading:: 1). Para1. how did water come into being on the earth ? What is the significance of the presence of water on the earth? Answers: the explosion of the earth produced water vapour which turned into water when the earth cooled down. It allowed the earth to dissolve harmful gases into oceans and seas. 2. para 2. finish the blank How life develops 2.___________ 1.__________ 3.___________ 4._________ 5._____________ 6.____________ 7.___________ 8.______________ 9._______________ 1).small plants in water 2) shellfish and all sorts of fish 3).green plants on land 4). Insects on land 5) amphibians on land or in water 6). Forests 7). Reptiles on land 8) d