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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 tests if dog saliva can really help heal wounds.
Fourth Grade
Microbiology
This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.
Fourth Grade
Microbiology
Ever wonder about the fungi you see growing on the sides of trees? This project explores these fungi to determine whether they are parasites or saprophytes.
Fourth Grade
Microbiology
In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.
Fourth Grade
Microbiology
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
Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.
Fourth Grade
Microbiology
The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.
Fourth Grade
Microbiology

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