P128 - Light bulb brightness
An activity where children systematically add batteries to a circuit to see how it affects brightness.
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P127 - How changing the voltage affects the volume of buzzer
An activity where children systematically add batteries to a circuit to see how it affects sound.
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P129 - How changing the voltage affects how powerful a motor is
An activity where children systematically add batteries to a circuit to see how it affects the speed of a fan (motor & rotor blade).
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P139 - Making and understanding switches in circuits
An activity where children use a home-made switch to better understand how electrical circuits work.
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