This is how long we mow the lawn together. The assessment requires the class to work with combining ratios and proportional reasoning. Pupils determine the unit rate of mowers and calculate the time required to mow a lawn if they work together.

Concepts

area of rectangles, unit rates, proportional reasoning, proportions, ratios

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Additional Tags

math

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Instructional Ideas

• Lead a discussion on combining rates
• Ask the class to find a way to use an area model to help solve the problem

Classroom Considerations

• The class should know how to calculate area of a rectangle

Pros

• Includes annotated sample responses
• Provides the minimum score to be classified as meeting standards

Cons

• The rubric contains feet within the points column

Common Core

7.RP.A.1 7.RP.A.2.a 7.RP.A.2.c 7.RP.A.3 7.G.B.6 MP4 MP6