Unit 5 Lesson 29 教案 2023-2024学年冀教版英语九年级全册

Unit 5 Lesson 29 教学目标 The new words: DNA, blueprint, general, complex, twin, copy, repeat, pattern, identify, related, grandson, granddaughter, instruction 核心素养 Practical Innovation 1. Labor awareness: Through learning this lesson, learn some know lead ge of DNA. 2. The use of technology:New words and phrases. the meaning of the text 教学重点 1.In general, a blueprint is a drawing that shows how to put a house together with many different parts. 2.But building a living thing is far more complex than building a house. 3.Except for some twins, every living thing has its own unique DNA. 教学难点 1.From your DNA, scientists can identify not only you, but also people who are related to you. 2.Your DNA has billions of instructions that explain why you are the way you are. 教学过程 一、导入新课 Look at the picture. What you find? The boy looks like his father. The girl looks like her mother. Why do they look the same? Your DNA comes from your parents. Lead in Warming up Do you and the students near you look the same? What is the same? 二、新课讲解 Think about it! 1. What do you know about DNA? 2. What can scientists do with DNA? This is the shape of DNA. Do you think it’s magic? “DNA” is short for deoxyribonucleic acid. The two girls are twins. Maybe they have the identical DNA. [identical(adj) -identify (v.)] Fang Zuming looks like his father—Cheng Long. Lead in What do you know about DNA? What can scientists do with DNA? do with 处理 do with与deal with都可表示“处理”。 do with常与what连用,而deal with常与how连用。 e.g. I don’t know what they do with the problem. 我不知道他们如何处理这个问题。 While-reading Read the lesson and answer the questions: 1.What is a blueprint? It’s a drawing that shows how to put a house together with many different parts. 2.Which is more complex, building a living thing or building a house? Building a living thing is far more complex than building a house. 3.Do some twins have the same DNA? Yes, they are. 4.Is it possible to change your DNA? In the future, scientists might be able to change my DNA. 5.W