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K–12 teaching and learning · from the UNC School of Education

Rates and taxes

http://illuminations.nctm.org/LessonDetail.aspx?ID=L378

A lesson plan for grades 9–12 Mathematics and Social Studies

Provider: National Council of Teachers of Mathematics


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This activity allows students to become familiar with percents and taxes. Students learn how to determine the amount of tax a family will pay based on a certain income. Illuminations provides overheads and detailed instructions for completing the lesson.

Students will:

  • Work with composition of functions, slopes, averages, and percents.
  • Learn to derive equations based on information given.

NCTM Standards and Expectations:

  • Analyze functions of one variable by investigating rates of change, intercepts, zeros, asymptotes, and local and global behavior.

North Carolina Curriculum Alignment

Social Studies (2003)

Grade 11–12 — Economics

  • Goal 4: The learner will evaluate the roles of government in a market economy.
  • Goal 5: The learner will examine the various ways economic performance is measured.
    • Objective 5.05: Assess how individual spending and production decisions impact levels of income, employment, and prices.