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The Human Body’s Built-In Range Finder: The Thumb Method of Indirect Distance Measurement

Michael Wong 

May 2006, Volume 99, Issue 9, Page 622

Abstract:
Finding distances indirectly. Article discusses a fun challenge from puzzling over an old, seemingly magical distance measurement technique. Includes illustrations and gemetric background revealing how the technique works.

Keywords:
Article
Conceptual Development
Grades 9-12
Teacher
Modeling
Problems
Reasoning and Proof
Similarity / Congruence
Ratios / Proportions