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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 light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.
Fourth Grade
Electricity and Magnetism
Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.
Fourth Grade
First Grade
This science fair project idea produces varying pitches of sound.
Fourth Grade
Elementary School
This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.
Fourth Grade
Elementary School
How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!
Fourth Grade
Physical Science
What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.
Fourth Grade
Physics
Could there be toxic chemicals lurking in the cupboards and closets of your home?
Fourth Grade
Health and Medicine
In this experiment you will replicate the mummification process by making a hot dog mummy.
Fourth Grade
First Grade
This science fair project uses paper chromatography to  investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.
Fourth Grade
Elementary School
This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.
Fourth Grade
Third Grade
This science fair project idea explores substances that cause a bubble to last longer.
Fourth Grade
Third Grade
This project examines the impact of low water on a radish seedling root system. How is growth affected?
Fourth Grade
Elementary School
What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.
Fourth Grade
Third Grade

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