Chapter 3  Searching for Patterns
"This chapter begins with opportunities for students to analyze and describe various patterns. Questions ask students to represent algebraic expressions in different forms and use algebra and graphs to determine whether they are equivalent. Lessons provide opportunities for students to identify linear, exponential, and quadratic functions using multiple representations. Lessons introduce students to the concept of building new functions on a coordinate plane by operating on separate functions." Carnegie Textbook 
"The Aquarium of the Pacific’s Watershed Exhibit shows the intricacies of the Los Angeles flood channel system. "

Lesson 3.1  Exploring and Analyzing Patterns
"This lesson provides opportunities for students to analyze sequences and describe patterns in various problem situations."  Carnegie Textbook Lesson 3.2  Using Patterns to Generate Algebraic Expressions
"This lesson revisits the three pattern situations from the previous lesson and asks students to write algebraic expressions for each situation."  Carnegie Textbook Lesson 3.3  Comparing Multiple Representations of Functions
"This lesson presents various graphs, tables, equations, and contexts for students to analyze and sort into groups of equivalent relations."  Carnegie Textbook 
Lesson 3.4  Modeling with Functions
"This lesson explores operations on functions graphically."  Carnegie Textbook Lesson 3.5  Analyzing Graphs to Build Functions
"This lesson explores operations on functions graphically."  Carnegie Textbook 