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Why Is the Midpoint an Average?

Lingguo Bu 

March 2013, Volume 106, Issue 7, Page 514

Abstract:
The relationship between a midpoint and an average showcases the interplay between procedural knowledge and conceptual knowledge in learning mathematics for teaching.

Keywords:
Article
Algebra
Teacher in Training / Preservice Teacher
Grades 9-12
Connections / Applications
Mean / Median / Mode
Length
Manipulatives
Symmetry