Unit9 Period2 Lesson2Brain Power（课件）英语北师大版选择性必修第三册

1 北师大选修第三册 Lesson 2: Brain Power Unit 9 Human Biology 2 教学目标 Understand basic facts about the brain 01. 02. 03. Master key vocabulary: atom, nerve, billion, cell, organ Listen and understand a lecture about the brain Talk about how to keep your brain healthy After this lesson, you will be able to: 04. 3 目录 CONTENTS Lead-in 01. Pre-listening 02. While-listening 03. Post-listening 04. Summary 05. Assessment 06. Homework 07. 4 Lead-in 01. 5 Lead-in What do you know about the brain? 1. How much does the brain weigh? 2. How many cells does it have? 3. How much energy does it use? 6 Lead-in Match the words from the box with their definitions. atom nerve billion cell organ ( ) 1. one thousand million ( ) 2. a part of the body that has a particular purpose, e.g. the heart ( ) 3. the smallest piece of something that can exist alone ( ) 4. a tiny part of the body that helps carry messages to and from the brain ( ) 5. a unit of living matter billion organ atom nerve cell 7 Pre-listening 02. Pre-reading Read the statements and write T(true) or F(false) ( )1. The brain consists of only white matter. ( )2. The brain weighs just over a kilo. ( )3. The brain contains about one billion cells. ( )4. The brain uses 10% of the body’s energy. ( )5. The brain sends messages in the same way as a computer works. ( )6. There are more possible connections in your brain than there are atoms in the universe. 9 While-listening 03. 10 While-listening Listen and answer the first four questions. grey and white matter over 1 kilo 20% over 100 billion cells While-listening Listen and fill in the blanks. How are messages sent? The brain cells make up _____ ____, which are connected by _________ ________. The brain sends messages using them. What have we learnt about the brain in the last ten years? There are different areas in the brain, which are __________ _____ ________ _________. We now know which parts of the brain ___ ______ ___ different parts of our _____ ___ _______from them. The brain also has different areas for different kinds of ________ . You have one area for your _____ ________ and another area for __ ______ _________ that you learn when you are older. a foreign language nerve cells electrical impulses responsible for different functions thinking first language are related to body and feelings 12 Post-reading 04. Post-reading Complete the summary with the words from the lecture. The brain consists of 1. _____________________ matter. It weighs 2. _____________________. It uses 3. ______________ of the body’s energy. It contains over 4. ____________________________ which make up nerve cells. These nerve cells are connected by electrical impulses. There are more possible connections in one brain than there are 5. _________________________. Scientists have mapped different areas of the brain that are responsible for 6. _______________________. There are also different areas for different types of thinking, such as learning your own language and learning a 7. ______________ language. grey and white just over a kilo 20% one hundred billion cells atoms in the universe different functions foreign 14 Post-reading What problems do they have？ What can they do? Anna:___________________________________________________________________ ______________________ ______________________ ______________________ John:_______________________________________________________________________________________________ _________on junk food, __________________ of Omega-3 fats Bella: _________________________ ___________________________________________________________________________ _____________________ _____________________ _____________________ Memory isn’t as good as it used to be, so do brain exercises really work? Exams are coming up, so he wonders if there are certain foods that are good for the brain. Is there any particular kind of exercise that can improve the health of her brain? Listen again and write down the advice challenge their brain with learning new things they are not good at cut down increase the intake do exercise that is good for the heart, such as walking and running 15 Post-listening Eat healthy foods. They contain vitamins and minerals that are important for the nervous system. Get a lot of playtime (exercise). Wear a helmet when you ride your bike or play other sports that require head protection. Don't drink alcohol, take drugs, or use tobacco. Use your brain by doing challenging activities, such as puzzles, reading, making art, or anything else that gives the brain a workout! Group Discussion: How can we keep our brain healthy? 16 Summary 05. 17 Summary ✓Brain Facts 大脑事实 ⚖️Weight: just over 1 kg ⚡ Energy: 20% of body's energy 🔬 Cells: over 100 billion 📡 Messages: electrical impulses ✓ Key Vocabulary atom nerve billion cell organ ✓Keep Brain Healthy: • Diet • Exercise • Sleep • Learn 18 Assessment 06. 19 Assessment Learning Objectives Score(1-5) After learning, I am able to understand basic facts about the brain After learning, I am able to master key vocabulary in this lesson After learning, I am able to express my opinion on how to keep your brain healthy in English. 5-完全能；4-基本能；3-不确定；2不太能；1-完全不能 20 Homework 07. 21 Homework Writing Task: Write a short paragraph (60-80 words): How to Keep Your Brain Healthy? Include at least two methods Use the vocabulary we learned today 22 1. exist in… 存在于……之中 There exists... 有/ 存在…… existing adj. 现存的；现有的 existence n. 存在 bring…into existence 使……开始存在 in existence 现存的；现有的 come into existence 产生；存在 重点单词 23 2. contain v.包含 容纳 重点单词 contain oneself 克制自己 contain one's feelings 抑制某人的感情 contain one's anger 抑制某人的怒火 contain one's excitement 控制某人的激动 A contains B (=B is inside A) B 在A 里面 container n. 容器 24 3. connect v. 使连接；与....有关系；衔接 重点单词 connect…to/ with/ and… 把……与……连接起来（具体含义） connect…with… 把……与……联系起来（抽象含义） be connected with 与……有联系/ 有关联 connection n. 联系；连接 in connection with 与……有关 have connection with 与……有联系 the connection between A and B A与B之间的联系 25 4. responsible adj. 负责的；可靠的 重点单词 responsible adj. 负有责任的；负责的 be responsible for… 对……负责 responsibility n. 责任；职责 irresponsible adj. 不负责任的 take responsibility for sth. 承担某事的责任 26 5. make up 组成；弥补；化妆；编造 重点单词 make up a team 组建一个团队 make up a story 编故事 make up an excuse 编借口 make up before the mirror 在镜子前化妆 make up for the loss 弥补损失 27 6. cut down on 重点单词 cut down 削减；砍倒 cut out 裁剪；删除 cut away 剪去；切除；砍掉 cut up 切碎 cut off 切掉；阻碍；中断 cut in 插嘴；插队 cut through/across 抄近路穿过 28 Thank You 132576.55 35369.94 180777.17 $