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Interactive Geometry Software in the B.C. (Before Computers) Era

Heather Whittaker, Iris Johnson 

October 2005, Volume 99, Issue 3, Page 170

Abstract:
The use of 3x5 cards to explore geometric relationships through the first three van Hiele levels of geometric reasoning. Students engage in reasoning and proof as they explore concepts related to parallel lines and quadrilaterals.

Keywords:
Article
Teacher Education
Conceptual Development
Teacher in Training / Preservice Teacher
Grades 9-12
Curriculum
Geometry & Measurement
Manipulatives