Lesson objective: Apply understanding of how to solve equations in order to solve real-world problems.

This lesson provides an opportunity for students to apply their knowledge and understanding of solving equations to a real-life situation. Students are asked to determine how many laps Diego, Ashley and Paige must walk in order to each raise $30 for their school's walk-a-thon.

Key Concept students will use:

- Because equations show a relationship between expressions, we can use the relational meaning of the equal sign to find a missing value in an equation.

Skills students will use:

- Using inverse operations to solve equations
- Using properties of operations of algebraic equations (Grade 6, Unit 8)

**Key vocabulary: **

- equation
- expression
- variable