Teacher's Guide - The Curriculum Project

Supply and Demand (cont’d)Factors Affecting DemandGroupwork1. Before students open their books, put them into groups of 3-5 and askthem whether they can think of factors (things) that affect Demand. Givethem 5-10 minutes and then ask each group in turn to give you an idea.Write it on the board and see if the other groups agree.Pre-teach: substitute (adj): replacement, alternative.Pairwork2. In pairs, ask the students to complete the exercise in their notebooks. First,read through the exercise with the students. Then give them 20-30 minutesto complete the activity. Finally, elicit answers from different pairs and checkagreement with the rest of the class.Answers:1. The price of mangoes in Mae Sot rises from 20 to 100 baht per kilogram in one week.Does the demand for mangoes rise or fall? Why?Answer: The demand for mangoes will probably fall, because they are more expensive andfewer people can afford to buy them.2. Ma Aye Aye is a teacher in Nupo camp. She loves chocolate, but her salary is small andshe can’t afford to buy much. One day she is promoted to headteacher, and her salaryincreases. Does she buy more or less chocolate now? Why?Answer: She probably buys more chocolate because she has more money.3. Myint Thu lives in Mae Sot in Thailand. He has a stall in the market selling sandals.One day another stall in the market starts to sell sandals also. However, the sandals inthe other stall are stronger and cheaper than Myint Thu’s. After a few weeks, what happensto the demand for Myint Thu’s sandals? Why?Answer: The demand for Myint Thu’s sandals decreases. Many buyers have discovered thatthe other stall sells better and cheaper sandals, so they no longer come to Myint Thu’s stall.4. Tun Tun lives in Taungoo. He is a farmer. He works on his farm with his wife and histhree sons. Most months, Tun Tun spends most of his money on sweets for hisgrandchildren. In May, he decides to buy rubber boots for the rainy season. Does hespend more or less money on sweets in May? Why?Answer: Tun Tun spends less money on sweets in May because he has already spent much ofhis money on the rubber boots that he needs.5. Yin Twe has three children. They like bananas. She always buys lots of them at themarket. One day her children tell her that they don’t like bananas any more, but preferoranges. What does Yin Twe buy the next time she goes to the market? Why?Answer: The next time she goes to market she buys oranges instead of bananas because thisis what her children want.The Curriculum Project ECONOMICS: an introduction - Teacher’s Guide16