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Fourth Grade Science Fair Project Ideas

Building off of what they learned in 3rd grade, 4th graders add a new level of sophistication to their 4th grade science projects. In addition to describing data quantitatively, kids begin to use their observations to formulate scientific arguments and engage in scientific debate. 4th grade science fair projects may involve kids going beyond testing a hypothesis—young scientists can be encouraged to use their results to make predictions about what might happen when the experiment is expanded to test new variables. Education.com's selection of fourth grade science fair project ideas are carefully written with 4th graders in mind, giving them the tools they need to effectively learn about the world around them by pursuing the answers to their questions in a methodical way.

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This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.
Fourth Grade
Elementary School
What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.
Fourth Grade
Easy
This science project teaches students to classify different shapes of leaves.
Fourth Grade
Botany
Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.
Fourth Grade
Life Science
Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.
Fourth Grade
Third Grade
How do fish breathe? How do gills work? In this science project, learn about aquatic respiration and find a fish's breathing rate in different temperatures.
Fourth Grade
Easy
This science fair project idea explores the different properties & interactions of sugar molecules.
Fourth Grade
Elementary School
Are crickets affected by temperature? Test your knowledge! This project examines whether temperature has any effect on the chirping of crickets.
Fourth Grade
Elementary School
Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.
Fourth Grade
Chemistry
This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.
Fourth Grade
Elementary School
This science fair project idea  researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.
Fourth Grade
Elementary School

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