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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
Second Grade
Test whether plants can grow without sunlight and water.
Third Grade
Elementary School
Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.
Third Grade
Easy
What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.
Third Grade
Anatomy
Certain fruits can change gelatinĂ¢s ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.
Third Grade
Easy
This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.
Third Grade
Medium
Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.
Third Grade
Easy
Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.
Third Grade
Easy
How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.
Third Grade
Anatomy
How does frost form?  How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.
Third Grade
Easy

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