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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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What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.
Fourth Grade
Astronomy
Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.
Fourth Grade
Second Grade
Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.
Fourth Grade
Third Grade
Science fair project in which you make cheese in your own kitchen using milk, lemon juice and cheese cloth.
Fourth Grade
Third Grade
The goal of this project is to create an exciting topographical map out of dough.
Fourth Grade
Geology
These science fair experiments demonstrate the chemistry of rust and the oxidation process.
Fourth Grade
Elementary School
Examine which metal conducts more heat by boiling water in 3 pans made of aluminum, copper, and stainless steel.
Fourth Grade
Fifth Grade
Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.
Fourth Grade
Elementary School
Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.
Fourth Grade
Fifth Grade
This science project has students collect wood samples and invent new uses for different types of wood based on its properties.
Fourth Grade
Elementary School
Construct and experiment with a periscope using reflected light rays to gather an image.
Fourth Grade
Fifth Grade

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