Illuminations: Constant Dimensions

Students will measure the length and width of a rectangle using both standard and non-standard units of measure.

In addition to providing measurement practice, this lesson allows students to discover that the ratio of length to width of a rectangle is constant, in spite of the units. For many middle school students, this discovery is surprising.


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Math Topics
Middle School, Educator
6th Grade, 7th Grade, 8th Grade

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Illuminations (National Council of Teachers of Mathematics)

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