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Elementary School Science Fair Project Ideas

Education.com's elementary school science fair projects expose kids to a broad range of opportunities for scientific inquiry, arming them with the tools and knowledge they need to answer their questions about the world around them. Elementary school science experiments are a great way to demonstrate important concepts in physics and chemistry, while our elementary school science fair project ideas equip kids with carefully explained procedures that yield enlightening results.

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This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.
Physics
Second Grade
This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.
Elementary School
Physics
This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!
Physics
Third Grade
The objective of this science fair project idea is to  determine if sound travels best through the air, water or a solid.
Elementary School
Physics
Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?
Physics
Second Grade
This science fair project idea builds models of various types of bridges and then  determines which bridge design is the strongest.
Physics
Fifth Grade
This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.
Physics
Kindergarten
What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.
Physics
Fourth Grade
Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.
Physics
Third Grade
This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.
Elementary School
Physics

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