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课件网) UNIT 9 HUMAN BIOLOGY LESSON 2 BRAIN POWER LEARNING OBJECTIVES To listen and talk about human brain and brain power; To listen for general understanding; To listen for specific information and deep understanding; To recall information previously heard; To understand and learn words and expressions in context; To compare personal opinions with the ideas of others; To discuss expressions that ask for and give advice. KEY POINTS AND DIFFICULT POINTS To understand and discuss human brain and brain power; To answer the comprehension questions; To listen for general idea of the text; To recall key information after listening; To express personal opinions and exchange ideas with others; To understand and learn expressions that ask for and give advice. LEADING IN How much do you know about the brain ACTIVATE AND SHARE 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 LISTEN FOR UNDERSTANDING Before listening to a lecture about the brain, 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. F T F F T T LISTEN FOR UNDERSTANDING Listen to the lecture and check your answers to Activity and correct the false ones. 1. The brain consists of grey and white matter. 3. The brain contains over one hundred billion cells. 4. The brain uses 20% of the body's energy. LISTEN FOR UNDERSTANDING Listen again. Complete the information you hear about the brain. Then tell your partner what you have learnt about the brain. What matter does it consist of Grey and white matter How much does it weigh How much body’s energy does it use How many cells does it contain just over a kilo 20% over one hundred billion cells LISTEN FOR UNDERSTANDING Listen again. Complete the information you hear about the brain. Then tell your partner what you have learnt about the brain. How are messages sent The brain cells make up _____, which are connected by _____. The brain sends messages using _____. nerve cells electrical impulses electrical impulses LISTEN FOR UNDERSTANDING Listen again. Complete the information you hear about the brain. Then tell your partner what you have learnt about the brain. 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 _____ diffe ... ...
