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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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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
Elementary School
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
Elementary School
Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.
Third Grade
Elementary School
This science fair project idea explores the egg's thin membrane.
Third Grade
Elementary School
This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.
Third Grade
Elementary School
This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.
Third Grade
Elementary School
This science fair project idea's objective is to understand the concept of air pollution and examine the quality of air in our environments.
Third Grade
Ecology
Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?
Third Grade
Physics
This science fair project idea  determines what household items are good conductors of electricity.
Third Grade
Elementary School
In this project, sunlight is blocked from a leaf in order to see the affect that sunlight has on leaves.
Third Grade
Elementary School
While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!
Third Grade
Microbiology
This science fair project idea examines which type of insulation holds in the most heat.
Third Grade
Elementary School
The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.
Third Grade
Elementary School
In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.
Third Grade
Earth & Space Science
In this project, vinegar and salt act as preservatives keeping bacteria from growing in the bouillon mixtures.
Third Grade
Elementary School

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