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Connecting Research to Teaching
Connecting Research to Teaching: Not All Opportunities to Prove Are the Same

Nicholas J. Gilbertson, Samuel Otten, Lorraine M. Males, and D. Lee Clark; Edited by Margaret Kinzel and Laurie Cavey 

September 2013, Volume 107, Issue 2, Page 138

Confusion can arise from the subtle difference between proving a general and a particular statement, especially when general statements are presented by textbooks in ways that make them appear particular in nature. The authors discuss the implications for teaching proof in light of the current opportunities in high school geometry textbooks.

Research Studies
Grades 9-12
Geometry & Measurement
Reasoning and Proof