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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 experiment examines the role of fat in food, especially in making bread rise and whipping cream.
Fourth Grade
Elementary School
Take a dive into the candy jar with this yummy science experiment.
Fourth Grade
Chemistry
Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...
Fourth Grade
Earth & Space Science
Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.
Fourth Grade
Microbiology
The objective of this science fair project idea is to  determine if sound travels best through the air, water or a solid.
Fourth Grade
Elementary School
In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.
Fourth Grade
Elementary School
Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.
Fourth Grade
Easy
In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.
Fourth Grade
Elementary School
This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.
Fourth Grade
Second Grade
In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.
Fourth Grade
Elementary School
Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.
Fourth Grade
Physics

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