## Reflection: Staircase of Complexity Solving for x - Section 3: Discussion

I really like how this task shows two equations that are essentially the same but the second one has two variables instead of one.  I think this is a useful way for students to learn how to isolate x in both cases, rather than taking them on as two separate processes. Students who can solve multi-step equations for x when the answer is an integer often have trouble solving for a variable in terms of another variable. To me, this increase in complexity makes a lot of sense and I think it will make this work easier for students, both conceptually and in terms of the skill needed to solve.

Staircase of Complexity: Adding in another variable

# Solving for x

Unit 1: Introduction to Algebra: Focus on Problem Solving
Lesson 12 of 14

## Big Idea: How do I get x alone? Students compare linear equations in one variable to linear equations in two variables and solve for x in both cases.

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60 minutes