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Elementary School Science Fair Project Ideas

Great selection of elementary school science fair project ideas. These science fair projects can help you find elementary school level ideas for your science fair.

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This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.
Which Food Will Mold the Fastest?
Elementary School
First Grade
Who's home? The goal of this project is to determine what, if any, other types of organisms other than birds are living in birds' nests.
Who else lives in birds' nests besides birds?
Elementary School
Ecology
This science fair project idea determines which method of hand cleansing is the most effective.
Effective Hand Washing
Elementary School
First Grade
Quench your thirst with great tasting lemonade while you explore the concepts of acid and base, and how these differ from sweet and sour.
Lemonade Science
Elementary School
Middle School
In this science fair project, students will construct their own hovercraft.
DIY Hovercraft
Fourth Grade
Fifth Grade
This project determines what category of person is most likely to be ticklish.
Who’s Most Ticklish?
Elementary School
Second Grade
Looking for a project on machines? Get a fun elementary school science fair project idea to design a compound machine using your knowledge of simple machines.
Creating a Compound Machine Using Simple Machines
Elementary School
Medium
In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.
How Does Heat and Pressure Create Metamorphic Rocks?
Fifth Grade
Middle School
How Does a Compass Work?
Elementary School
Third Grade
This science fair project focuses on the use of a conductivity device that will determine if a substance dissolved in water can or cannot conduct electricity.
Which Substance When Dissolved in Water will Conduct an Electrical Current?
Fifth Grade
Middle School
The goal of this science fair project idea is the examine the effectiveness of various sunscreens in blocking UV light.
Which Sunscreen is the Most Effective in Blocking UV Light?
Elementary School
Fifth Grade
What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.
What is Surface Tension?
First Grade
Zoology
This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.
Homemade Lava Lamp
Elementary School
Fourth Grade
In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.
Fastest Way to Cool a Soda
Fourth Grade
Easy
The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.
How Does Sound Travel?
Elementary School
Fourth Grade

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