Are there some rectangles that are more square than others? A thought-provoking task asks individuals to create a formula that objectifies the square-ness of a set of rectangles. They then use their formulas to rank a set of rectangles.

Concepts

squares, formulas, length, measurement

Show More Show Less

Additional Tags

math

Show More Show Less

Instructional Ideas

• Create a collaborative activity in which each member creates their own formula and then compares and contrasts with other group members
• Have partners use the rubric to score each other's work

Classroom Considerations

• Expects an understanding of the properties of squares

Pros

• Includes a rubric to assist in scoring student work
• Provides the question as open-ended to allow for various solution methods

Cons

• None

Common Core

HSA-CED.A.1