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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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In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.
Fourth Grade
Easy
This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.
Fourth Grade
Elementary School
Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.
Fourth Grade
Third Grade
This science project teaches students to classify different shapes of leaves.
Fourth Grade
Botany
Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.
Fourth Grade
Medium
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
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
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 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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