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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 an exciting science project your child will be sure to love.

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In this experiment we will be determining whether birds prefer certain colors of seed.
Third Grade
Elementary School
Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.
Third Grade
Second Grade
Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.
Third Grade
Second Grade
How do organic materials become soil? This science experiment measures what materials biodegrade.
Third Grade
Elementary School
This science fair project idea demonstrates how air resistance contributes to denser objects falling faster than less dense objects.
Third Grade
Elementary School
The objective of this science fair project is to explore the relationship between acidic and basic compounds.
Third Grade
Chemistry
This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.
Third Grade
Elementary School
This science fair project idea explores whether talking to a plant will help it grow.
Third Grade
Elementary School
This science fair project idea examines the reason boats are shaped and engineered.
Third Grade
Elementary School
Make a backbone model to explore human anatomy and life science.
Third Grade
Easy
There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.
Third Grade
Elementary School
Discover whether cold or hot water from the faucet will boil faster on the stove.
Third Grade
Elementary School
This science fair project idea investigates if fats add to the flavor of food.
Third Grade
Elementary School

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