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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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Test whether plants can grow without sunlight and water.
Fourth Grade
Elementary School
This science fair project explores how osmotic pressure forces water through the root up into the plant.
Fourth Grade
Elementary School
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
This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.
Fourth Grade
Elementary School
This science fair project idea explores whether talking to a plant will help it grow.
Fourth Grade
Elementary School
This science fair project will help students learn about non-vascular plants, such as mosses.
Fourth Grade
Second Grade
Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.
Fourth Grade
Fifth Grade
This science fair project teaches students about wilting and browning of salad greens.
Fourth Grade
Kindergarten
This science fair project examines how seeds hitchhike on animals and clothing.
Fourth Grade
Elementary School
Find out whether packaged seeds actually do expire in this new science fair project idea.
Fourth Grade
Fifth Grade

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