1. Class 25, December 1, 2015 Lesson 4.4

2.  By the end of this lesson, you should understand that: ◦ Using algebra to generalize calculations is a valuable tool

3.  By the end of this lesson, you should be able to: ◦ Write or interpret an expression that involves a percentage increase ◦ Use expressions and equations to solve contextual problems about percentage increases or decreases

4.  Main idea: ◦ The combination of algebraic skills and numeracy (or number sense skills) are valuable in problem solving What skills from this course did you use in this lesson? How did these skills help you with the algebra? What are the advantages of using algebra?