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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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Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!
Fourth Grade
Zoology
Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.
Fourth Grade
Elementary School
This science experiment tests if dog saliva can really help heal wounds.
Fourth Grade
Elementary School
Discover how and which salt melts ice the quickest.
Fourth Grade
Elementary School
This project examines whether people's taste perception is influenced by what they see.
Fourth Grade
Elementary School
In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.
Fourth Grade
Easy
This science fair project idea  develops an understanding through experimentation of which shapes are the most structurally strong.
Fourth Grade
Elementary School
In this experiment, the weight of aluminum cans will be compared.
Fourth Grade
Elementary School
4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.
Fourth Grade
Zoology
This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.
Fourth Grade
Elementary School

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