EXPLORING DATA AND STATISTICS Problem （探索数据和统计数据的问题）.pdfVIP

Page 1 of 2 E X P L O R I N G D ATA A N D S TAT I S T I C S Problem Solving Using 1.5 Algebraic Models GOAL 1 USING A PROBLEM SOLVING PLAN One of your major goals in this course is to learn how to use algebra to solve real-life What you should learn problems. You have solved simple problems in previous lessons, and this lesson will GOAL 1 Use a general provide you with more experience in problem solving. problem solving plan to solve As you have seen, it is helpful when solving real-life problems to first write an real-life problems, as in equation in words before you write it in mathematical symbols. This word equation Example 2. is called a verbal model. The verbal model is then used to write a mathematical GOAL 2 Use other problem statement, which is called an algebraic model. The key steps in this problem solving strategies to help solving plan are shown below. solve real-life problems, as in Ex. 22. Write a Write an Solve the Assign Answer the verbal algebraic algebraic Why you should learn it model. labels. model. model. question. To solve real-life problems, such as finding the average speed of the E X A M P L E 1 Writing and Using a Formula Japanese Bullet Train in Example 1. LL LL II AA FF EE EE The Bullet