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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 project determines the age of a tree using a growth factor chart instead of cutting the tree down to count the rings in its base.
Elementary School
Fifth Grade
Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.
Elementary School
Third Grade
Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.
Elementary School
Fifth Grade
In this project, waves of vibrations are experimented with using water in glasses.
Elementary School
Third Grade
This science fair project idea discovers whether there are some objects that do not fall at a constant rate.
Elementary School
Fourth Grade
Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.
Elementary School
Third Grade
This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.
Elementary School
Third Grade
Looking for a project on fossils? Check out this fun science fair project idea to understand the process of coal formation and fossils part in that formation.
Elementary School
Easy
This science fair project idea compares biodiversity between drops of water.
Elementary School
Third Grade
This fun science project explores the climate change over the course of the history of Earth and helps construct a diorama representing a geologic time period.
Elementary School
Medium
In this free science fair project idea, we construct gears to turn a simple machine into a more complex compound machine.
Elementary School
Engineering
These science fair experiments demonstrate the chemistry of rust and the oxidation process.
Elementary School
Second Grade

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