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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 science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.
Fourth Grade
Elementary School
Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?
Fourth Grade
Second Grade
Take a dive into the candy jar with this yummy science experiment.
Fourth Grade
Chemistry
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
Find out whether packaged seeds actually do expire in this new science fair project idea.
Fourth Grade
Fifth Grade
This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.
Fourth Grade
Elementary School
This science fair project idea explores whether white light can be separated into different colors.
Fourth Grade
Elementary School
In this experiment we will be determining whether birds prefer certain colors of seed.
Fourth Grade
Elementary School
This science fair project idea explores  whether a plastic slinky works as well as a metal slinky when walking it down the stairs.
Fourth Grade
Elementary School
This science fair project idea examines whether boys and girls differ in reflexes.
Fourth Grade
Elementary School

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