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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 enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.
Third Grade
Medium
This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.
Third Grade
Elementary School
In this science fair project, students use the streak test to tell minerals apart from each other.
Third Grade
Elementary School
This science fair project will help students learn about non-vascular plants, such as mosses.
Third Grade
Second Grade
How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.
Third Grade
Medium
Test whether plants can grow without sunlight and water.
Third Grade
Elementary School
Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!
Third Grade
Astronomy
This science fair project teaches students the differences between fruits and vegetables.
Third Grade
Elementary School
In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!
Third Grade
Astronomy
In this experiment, the weight of aluminum cans will be compared.
Third Grade
Elementary School

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