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Key Ideas and Insights in the Context of Three High School Geometry Proofs

Manya Raman, Keith Weber 

May 2006, Volume 99, Issue 9, Page 644

Abstract:
How the concept of "key idea" can be used in high school geometry. Article discusses connecting students' intuitive informal arguments with rigorous formal mathematical proofs. Includes three examples.

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Keywords:
Article
Conceptual Development
Grades 9-12
Area
Math Coordinator / Coach
Teacher
Problem Solving / Problem Posing
Reasoning and Proof
Technology
Similarity / Congruence