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CK-12 Foundation
Electric Motor
How does a direct current run a motor? Pupils control five variables in an electric motor and observe how the force diagram changes. The force, magnetic field, and current vary based on the changes in the design of the magnet and...
CK-12 Foundation
AC Transformer
High voltage power lines deliver electricity to homes, but each home requires low voltage. How does the energy get converted so it can be used safely? Pupils explore alternating current and transformers through a simulation. They control...
Curated OER
Sources of Electricity
In this online electricity worksheet, students are asked 10 questions about electric current and battery energy, an online answer key provided.
Curated OER
Drought Presentation
In this drought activity, students are given directions on how to give a presentation of facts, maps, videos, and more. Students inform the audience with 4 of the facts asked.
Curated OER
AC Waveforms
In this AC waveforms activity, students answer ten questions about AC voltage, frequencies of waveforms and they interpret diagrams of AC voltage.