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Third Grade Science Fair Project Ideas

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

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Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!
Under What Conditions Do Potatoes Sprout The Fastest
Third Grade
Fourth Grade
Will increasing the amount of salt in water effect how slow or fast the water freezes?
Water Salinity
Third Grade
Chemistry
Cleaning can be a chore, but not with this sudsy experiment!
Homemade Cleaners: Getting Squeaky Clean
Third Grade
Chemistry
Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.
Mental Mix Up: Experimenting with Your Ability to Focus
Third Grade
Fourth Grade
Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!
Spider Science: Exploring the World of Webs
Third Grade
Zoology
Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.
Latent Fingerprints
Third Grade
First Grade
This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!
Floating Balloons
Third Grade
Easy
How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.
Melting Ice Experiment
Third Grade
Easy
This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.
Whatever Floats Your Boat
Third Grade
Fourth Grade
Do you think heat can affect a plant's growth rate?
Heating Plants: The Great Growth Race
Third Grade
Botany
Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?
A Thunderous Sound
Third Grade
Second Grade
In this experiment we will be determining whether birds prefer certain colors of seed.
Do Birds Have a Favorite Color?
Third Grade
Elementary School
Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.
Outer Space In My Yard
Third Grade
Elementary School
Do different types of oil mix or stack? Find out in this science fair project idea!
Do Different Types of Oil Mix or “Stack”?
Third Grade
Second Grade
Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.
Too Cold To Snow?
Third Grade
Fourth Grade

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