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April 2005
ISSN 0031-921X
EISSN 1943-4928
LETTERS TO THE EDITOR
EDITORIAL
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FIGURING PHYSICS
PAPERS
The Speed of Sound in Air: An At-Home Experiment
Phys. Teach. 43, 219–221 (2005)
https://doi.org/10.1119/1.1888080
APPARATUS FOR TEACHING PHYSICS
TRICK OF THE TRADE
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PHYSICS CHALLENGES FOR TEACHERS AND STUDENTS
A WORLDWIDE PROBLEM-SOLVING CONTEST
FOR THE NEW TEACHER
WEBSIGHTS
BOOK REVIEWS
A “Perpetual Motion Machine” Powered by Electromagnetism
Hollis Williams
Values Reflected in Energy-Related Physics Concepts
Kara E. Gray, Rachel E. Scherr