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3rd Grade Science Fair Projects

For their 3rd grade science projects, kids begin investigating the answers to their questions much like actual scientists would. Instead of simply collecting qualitative data (describing what they observe), 3rd graders graduate to collecting and presenting quantitative data by measuring their results with increased accuracy, communicating their findings in simple charts and graphs, and describing their observations in written prose. Education.com's collection of 3rd grade science fair projects give kids the opportunity to apply their newly acquired skills to thinking critically about the world around them while having serious fun in the process. Browse our collection of third grade science projects and experiments by using the boxes to the left to filter by topic, and find that exciting science project your child will be sure to love.

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Showing 46 to 60 of 109
The project investigates how water and movement affects erosion.
Third Grade
Physical Science
This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.
Third Grade
Physical Science
This science fair project idea investigates if webbed feet help a duck (and others) swim.
Third Grade
Physics
This science fair project idea determines if the size of the parachute will change the rate at which an object falls.
Third Grade
Aerodynamics
This science fair project idea investigates which objects float and sink in honey, water, and oil.
Third Grade
Physics
The project determines the forces that cause paper airplanes to fly and determine which type of paper airplane flies the farthest.
Third Grade
Aerodynamics
This science fair project idea investigates the difference in reaction times between boys and girls.
Third Grade
Physics
Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.
Third Grade
Chemistry
Vitamin C boosts your immune system and your health.  The purpose of this science fair project is to determine which fruit juices have the most Vitamin C.
Third Grade
Chemistry
Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.
Third Grade
Physical Science
This science fair project idea  determines what household items are good conductors of electricity.
Third Grade
Electricity and Magnetism
This science fair project idea  investigates how the shape of an object affects drag.
Third Grade
Physics
This project tests the hypothesis that dark colors absorb more heat than light colors.
Third Grade
Physics
This science fair project idea examines which type of insulation holds in the most heat.
Third Grade
Chemistry

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