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By the Unit or Square Unit?

Bellasanta B. Ferrer, Bobbie Hunter, Kathryn C. Irwin, Maureen J. Sheldon, Charles S. Thompson, and Catherine P. Vistro-Yu 

November 2001, Volume 7, Issue 3, Page 132

Abstract:
Three ways in which teachers help their students understand that the most compact two-dimensional shape has the greatest area for a given perimeter.

Keywords:
Article
Grades 6-8
Area
Teacher
Lesson Plans
Perimeter / Circumference
Reasoning and Proof