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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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Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.
Fourth Grade
Aerodynamics
This science fair project idea determines the most effective method of preserving food.
Fourth Grade
Physical Science
In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.
Fourth Grade
Chemistry
This science fair project idea explores the different properties & interactions of sugar molecules.
Fourth Grade
Chemistry
This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.
Fourth Grade
Physical Science
Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.
Fourth Grade
Physics
The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.
Fourth Grade
Physical Science
This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.
Fourth Grade
Physics
This science fair project idea explores the different parts of the human ear and  models how the human ear reacts to sound waves.
Fourth Grade
Physical Science
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
Chemistry
This science fair project creates a visual model of whatâs happening to  sound waves as a car approaches and then leaves.
Fourth Grade
Physics

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