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Fun Science Projects & Experiments

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A collection of science projects, videos and experiments for various grades and topics.

Science Projects or Science Experiments: Grades 3 & 4


Weather & Meteorology : What Causes Lightning?
As clouds get bigger with the continuous rising of air, they interact with particles of ice and dirt to create a buildup of static electricity. Learn about the interaction of electrical charges in a cloud with charges on the ground with help from a meteorologist in this free video on understanding weather.
Weather & Meteorology : How Can I Tell How Far Away a Lightning Strike Hit?
In order to determine how far away a lightning strike hit, count the time that occurs between the lightning flash and the clap of thunder. Discover how a five second differential means a lightning strike is about one mile away with help from a meteorologist in this free video on understanding weather.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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