Lesson plan

16. Write and graph inequalities using word problems. (A)

teaches Common Core State Standards CCSS.Math.Content.6.EE.B.8 http://corestandards.org/Math/Content/6/EE/B/8
teaches Common Core State Standards CCSS.Math.Practice.MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
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Lesson objective: Write, solve and graph inequalites using word problems.

This lesson provides an opportunity for students to apply their knowledge and understanding of inequalities to a real-life situation. Students are asked to write a recommendation to the Principal about whether two second grade classes or two sixth grade classes should move to new portable classrooms. The recommendation is based on the square footage required for each student in the two grade levels and other factors the student thinks should be considered.

Key Concept students will use: 

  • Inequalities have many solutions and those solutions can be represented on a number line.

Skills students will use:

  • Modeling situations mathematically to write an inequality that represents the situation
  • Solving inequalties
  • Graphing inequalities on a number line.

Students engage in Mathematical Practice 4 (Model with mathematics) as they write inequalities to represent the two grade levels and make graphs that represent the solutions to those inequalities.

Key vocabulary: 

  • inequality
  • whole number