Proportionality: A Unifying Theme for the Middle Grades
Cynthia S. Lanius and Susan E. Williams
April 2003, Volume 8, Issue 8, Page 392
Middle school mathematics topics are often taught as separate, discrete topics without a unifying thread. Proportionality is a concept with the potential to untie, relate, and clarify many important, complex middle grades into a cohesive theme.
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Ratios / Proportions