Why do we have to do so much work? Scholars learn how to set up bar models to represent a situation involving work. They use these bar models to help set up equations with rational coefficients to solve the problem situation.

Concepts

time word problems, math modeling, rational equations

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Additional Tags

math

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Instructional Ideas

• Use the lesson to introduce work problems leading to rational equations

Classroom Considerations

• Learners should be proficient in solving equations with rational coefficients
• Note that the problems are about the time required for people to complete jobs (like painting) rather than physics work problems

Pros

• Drawing models helps learners see relationships
• Teacher guide includes answer key

Cons

• No student worksheets (besides the warm-up questions)
• Outdated California standards