Session 2: Patterns in Context

In Session 1, we began to develop a definition of algebraic thinking. We used mathematical thinking tools to reason about situations, and we used pictures, charts, and graphs to describe how different quantities are related. Although we were thinking algebraically, we did not use what many people think of when they think of algebra: variables. This session explores the uses of variables in describing patterns and relationships.
Note 1

Part A:
What Do You See?

Part B:
Patterns in Situations

Part C:
Different Uses of Variables

Part D:
Counting Stairs

Part E:
Summing Up

Homework

In this session, we will explore patterns in different situations. We will:
•	Find, describe, explain, and predict using patterns
•	Determine whether or not patterns in tables are uniquely described
•	Distinguish between closed and recursive descriptions of patterns
•	Understand that a table of data associated with a specific situation determines a unique pattern
•	Understand that there are different conceptions of algebra


	Throughout the session you will be prompted to view short video segments. In addition to these excerpts, you may choose to watch the full-length video of this session.


			New in This Session:
			variable input output recursive description closed-form description

Next > Part A: What Do You See?

Session 2: Index | Notes | Solutions | Video