Penny Problem

Unit 3: Systems of Equations
Lesson 9 of 13

Objective: Students will be able to solve a real life system of equations and present the solution graphically and algebraically. Students will also determine how the precision of measurements can effect the solutions to a system of equations.

Big Idea: This lesson is great on a variety of levels. First, students are solving a real-life problem that requires them to grapple with "unfriendly" numbers. Second, students are challenged to think about accuracy in measurement through the lens of systems of eq

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2 teachers like this lesson
Math, Algebra, systems of equations, precision, accuracy, Constraint, 9th grade
  50 minutes
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