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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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This science fair project will help students learn about non-vascular plants, such as mosses.
Third Grade
Botany
This science fair project examines how seeds hitchhike on animals and clothing.
Third Grade
Botany
In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.
Third Grade
Botany
Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.
Third Grade
Botany
This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.
Third Grade
Botany
This project explores whether plants can live and grow when 'watered' with juice, soda, or milk.
Third Grade
Botany
In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.
Third Grade
Botany
In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!
Third Grade
Botany
Third Grade
Botany

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