Here is a (great) lesson on using parentheses! The task requires the expression of ages using algebraic expressions, including the distributive property. Pupils use their expressions to determine the individual ages.

Concepts

linear equations, linear equations writing, linear equations applications, algebraic expressions, word problems, algebraic equations, linear functions, combining like terms

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Additional Tags

math

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Instructional Ideas

• Provide opportunities for the class to work at creating expressions dealing with ages
• Lead a discussion on when it is necessary to use parentheses in an expression and when one is not

Classroom Considerations

• Eighth grade classes should be able to solve the type of equation as it aligns with 8.EE.C.7.b

Pros

• The rubric includes point allocations for correct answers
• Sample responses show different typical misunderstandings

Cons

• None

Common Core

HSF-BF.A.1.a HSF-BF.A.1.b HSF-BF.B.4.a MP1 MP4