Education.com
Try
Brainzy
Try
Plus

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.

Filters
Sort by:
Showing 136 to 150 of 219
This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.
Third Grade
Elementary School
What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!
Third Grade
Elementary School
This science fair project idea explores how length affects the weight a bridge can hold.
Third Grade
Elementary School
This science fair project idea investigates how color affects temperature.
Third Grade
Elementary School
What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.
Third Grade
Easy
This science fair project idea demonstrates that plants give off water.
Third Grade
Elementary School
Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.
Third Grade
Easy
This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.
Third Grade
Elementary School
These science fair experiments demonstrate the chemistry of rust and the oxidation process.
Third Grade
Elementary School
This science fair project idea  investigates how optical distances change the apparent size of an object as seen through a magnifying lens.
Third Grade
Elementary School
This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.
Third Grade
Elementary School
What is a compound microscope? Kids find out by making one of their own in this cool science fair project.
Third Grade
Engineering
In this project, waves of vibrations are experimented with using water in glasses.
Third Grade
Elementary School
This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.
Third Grade
Fourth Grade
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

Share these projects with friends

clear all

Filter by

Subject
Recommended Learning Products
Trust Education.com to find smart things kids love
Unlimited Workbooks and Worksheets
90% of Students Understand Concepts Better Since Using PLUS
Unlimited Library of Children's Books
Over 750 stories at your fingertips
Make Math Practice Fun and Engaging
Interactive Math Lessons for Elementary School Students