Stop for a minute and try to imagine your world without electrical power and electronic gadgets. No convenient appliances in the kitchen, no electric lights. No computers, MP3 players, television, or video games. Your life would be completely different, wouldn't it? Electricity and electronics are so central to modern life that, paradoxically, they're easy to overlook. Stop overlooking them now and try a hand at one of our projects to explore the science of how electricity works or build a cool electronics gadget.
Have you tried our first electric play dough project,
and now you are looking for more to do? Do you want to learn more about circuits and add even more lights? Check out this project for part 2 of our play dough circuits series!
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Elec_p074
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- Less Details
Time Required
Very Short (≤ 1 day)
Prerequisites
You should understand the Introduction material in
[# ProjectIdea Name="Elec_p073" Value="HtmlAnchor" HtmlText="Light Up Your Play Dough!" HtmlHash="background" #]—the
first project in this series—before doing this project.
Material Availability
Kit available for purchase from our partner
.
See Materials tab for details.
Cost
Low ($20 - $50)
Safety
Never connect the battery pack's terminals directly to each other; this is called a short circuit and can make the batteries and wires get very hot. Do not connect the LEDs directly to the battery pack without using play dough; this will burn out the LEDs.
What do you do with your old wooden pencils when they get too short to hold? Don't throw them away; you can use them to make circuits! This project will show you how to use pencils to make resistors, an important part of many electrical circuits, and test how they affect the brightness of a lightbulb in a simple circuit.
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Elec_p013
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- Less Details
Time Required
Very Short (≤ 1 day)
Prerequisites
None
Material Availability
A kit for this project is available from our partner .
Cost
Low ($20 - $50)
Safety
Short circuits can get very hot and present a burn hazard. Never connect the positive and negative ends (red and black wires) of the battery pack directly to each other. Adult supervision is required for cutting the pencils.
Did you know that not all trains run on tracks? Some of the world's fastest trains are magnetic levitation trains (maglev). This means that the carriage of the train is suspended over the rails with no support, but only with magnetic fields! There is a physical explanation for magnetic levitation, and if you would like to learn more about magnetism and current, this is a science fair project that you must try!
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