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Circuit Construction Kit: DC - PhET Interactive Simulations
Circuit Construction Kit: DC - Virtual Lab
How Circuits Work - HowStuffWorks
18 Science Lessons to Teach Circuits | Science Buddies Blog
Circuit Construction Kit: DC - PhET Interactive Simulations
The Physics Classroom Tutorial: Electric Circuits
Introduction to circuits - Electricity - KS3 Physics - BBC
Circuit Basics - HowStuffWorks
Circuits | Introduction to Electrical Engineering and Computer Science …
Electrical circuits - BBC Bitesize
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