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Charging Ahead: An Itroduction to Electromagnetism (PB155X)

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Energize your next unit on electricity with hands-on activities to explain the fascinating phenomenon of electromagnetism. Students are introduced to the factors that determine the strength of electrical coils, and they use readily available materials to build a simple motor and a generator. Topics covered include circuit breakers, mag-lev trains, and superconducting generators.

Author(s): Larry E. Schafer
Publisher: National Science Teachers Association
Year: 2001

Language: English
Commentary: 27087
Pages: 83

0873551885......Page 1
Contents......Page 4
Acknowledgments......Page 5
Fitting Charging Ahead into Your Curriculum......Page 6
Assessment Methods......Page 7
Special Considerations......Page 8
What Is This Map?
......Page 9
Are There Other Maps?
......Page 10
Map, Assessment, and the Constructivist Process
......Page 11
Guide to Relevant National Science Education Content Standards
......Page 13
Sci Links
......Page 14
Concept Goals......Page 16
Procedure......Page 17
A Left-hand Model......Page 20
Preparation......Page 24
Suggestions for further study......Page 25
Concept Goals......Page 28
Procedure......Page 29
Summarize
......Page 34
Coils and Electromagnets
......Page 36
TECHNOLOGICAL TIE-IN: Mag-lev Trains and MRIs......Page 40
Background......Page 42
Part 1—Building a “Strobe” Light......Page 43
Part 2—Building an Electric Motor......Page 47
Some notes and hints:......Page 48
How Real Electric Motors Work
......Page 50
What is happening?
......Page 52
Making the Rotor and Rotor Stands
......Page 53
Making the Penny Switch
......Page 54
Making the Flopper
......Page 57
Reminders and Trouble Shooting
......Page 58
Suggestions for further study
......Page 59
Concept Goals......Page 64
Procedure
......Page 65
TECHNOLOGICAL TIE-IN: Superconductors
......Page 71
What is happening?
......Page 72
How to Make the Rotating Coil
......Page 73
How to Make a Current Detector
......Page 75
Suggestions for further study
......Page 76
Electromagnetic Induction
......Page 80
Magnetic Field
......Page 81
Voltage
......Page 82