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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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Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.
Fourth Grade
Second Grade
The goal of this evaporation experiment is to learn about how different external conditions affect drying time.
Fourth Grade
Second Grade
Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.
Fourth Grade
Fifth Grade
Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?
Fourth Grade
Third Grade
Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.
Fourth Grade
Elementary School
These science fair experiments demonstrate the chemistry of rust and the oxidation process.
Fourth Grade
Elementary School
Ever wonder why refrigerator lights turn off when you close the door? Does the darkness prevent food from spoiling? This experiment, determines just that.
Fourth Grade
Elementary School
Launch your science project to new heights! The objective of this science fair project is to determine how to make a bottle rocket reach its highest altitude.
Fourth Grade
Elementary School
In this project, the affect of acid rain is simulated by the acid, vinegar.
Fourth Grade
Elementary School
The purpose of this science fair project is to determine whether it takes more force to move an object over a smooth surface or a rough surface.
Fourth Grade
Elementary School
The purpose of this science fair project is to determine which household products are acids or bases.
Fourth Grade
Elementary School

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