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CK-12 Foundation
Ck 12: Fourth Grade Science: Physical Science: Electric Circuits
[Free Registration/Login may be required to access all resource tools.] Describes the parts of an electric circuit and identifies electric safety features and how to use electricity safely.
CK-12 Foundation
Ck 12: Controlling Current Overload in Electric Circuits
[Free Registration/Login may be required to access all resource tools.] Electrical circuits have safety features like fuses and circuit breakers to prevent an overload, which could cause a fire. This lesson explains how these work....
CK-12 Foundation
Ck 12: Physical Science: Electric Safety
[Free Registration/Login may be required to access all resource tools.] Overview of electric safety: short circuits, electric safety features, and how to use electricity safely.