In this lesson, students solve equations and graph them to see how the solution appears. In the associated Algebra 1 lesson, students solve quadratic equations by examining the graphs. The experience with linear equations in these activities will support students when they do the same work with quadratic equations in Algebra 1. Students reason abstractly and quantitatively (MP2) when they consider what parts of an expression are represented on a graph or in a situation.
Lesson overview
- 2.1 Warm-up: The Word List (5 minutes)
- 2.2 Activity: Seeing Solutions (15 minutes)
- 2.3 Activity: Understanding Solutions in Situations (20 minutes)
Learning goals:
- Interpret the meaning of solutions to linear equations in context.
- Visualize solutions to linear equations using graphs.
Learning goals (student facing):
- Let’s explore solutions to equations.
Required materials:
- Graphing technology
Standards:
- This lesson builds towards the standard:CCSS.HSA-REI.B.4MS.A-REI.4MO.A1.REI.A.2c
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