Direct change by finding the constant. Using two known values within a direct proportion, the resource shows how to find the constant of proportionality. Once individuals do that, they then find any value given the other. The video works through basic direct proportions and more complicated ones.

Concepts

direct variation, constant of proportionality, proportional reasoning, square roots, cubes, solving for 1 variable

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Additional Tags

math

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Instructional Ideas

• Review solving simple equations

Classroom Considerations

• Worksheet covers both direct and indirect proportions
• Assumes the class understands square and cube roots

Pros

• The worksheet denotes which items require a calculator to solve
• Contains an answer key

Cons

• None

Common Core

7.RP.A.2.a 7.RP.A.2.c MP5 MP6 MP7