Lesson 16

Interpreting Inequalities

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Lesson Narrative

In this lesson and the next, we move on to applying inequalities to solve problems. The warm-up is a review of the work in the previous lesson about solving inequalities when no context is given. Then students interpret and solve inequalities that represent real-life situations, making sense of quantities and their relationships in the problem (MP2). 


Learning Goals

Teacher Facing

  • Critique (orally) a solution method for a problem involving an inequality.
  • Identify the inequality that represents a situation, and justify (in writing) the choice.
  • Present (orally, in writing, and using other representations) the solution method for a problem involving an inequality, and interpret the solution.

Student Facing

Let’s write inequalities.

Required Materials

Learning Targets

Student Facing

  • I can match an inequality to a situation it represents, solve it, and then explain what the solution means in the situation.
  • If I have a situation and an inequality that represents it, I can explain what the parts of the inequality mean in the situation.

CCSS Standards

Addressing

Building Towards

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