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

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What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.
Third Grade
Life Science
In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.
Third Grade
Life Science
Enter the buzz worthy world of bee watching and find out what time bees like to wake up!
Third Grade
Zoology
What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.
Third Grade
Anatomy
Set off an a science adventure as you prepare a row of bee homes for your new visitors.
Third Grade
Zoology
Discover flight initiation distance as you play around in the park with this fun bird watching project!
Third Grade
Zoology
In this experiment we will be determining whether birds prefer certain colors of seed.
Third Grade
Life Science
This science experiment tests whether warm or cold water works best in making cut flowers last longer.
Third Grade
Botany

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