Apply solving linear equations to averages. A helpful video presents an average age problem given two unknown ages. Pupils learn how to set up the problem from the given information. They see how the equation is reduced to a two-step equation and solve to find the unknown ages.

Concepts

solving equations, solving for 1 variable, averages, word problems, two-step equations, combining like terms

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Additional Tags

math

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Instructional Ideas

• Review what it means to find an average

Classroom Considerations

• Assumes learners are familiar with solving two-step linear equations
• Requires knowledge of combining like terms

• This video is hosted on YouTube

Pros

• Shows each step in solving the linear equation
• Clearly writes out the solution to the problem

Cons

• None

Common Core

SL.6.2 SL.7.2 MP1 MP6 7.EE.B.4.a