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My Calculator Is Broken; It Says the Log of (–1) Is ...

Jeremy Kahan, Glen Richgels 

February 2003, Volume 96, Issue 2, Page 108

Abstract:
An exploration of logarithms of negative numbers spurred by an unanticipated result given by a calculator. It shares the perspectives of the teacher and the teacher-as-learner.

Keywords:
Article
Calculators
Algorithms
Conceptual Development
Grades 9-12
Teacher