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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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Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.
Fourth Grade
Elementary School
In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.
Fourth Grade
Elementary School
This science fair project teaches students about wilting and browning of salad greens.
Fourth Grade
Kindergarten
There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.
Fourth Grade
Elementary School
How well can people recall what they have observed. Test your knowledge in this fun experiment.
Fourth Grade
Elementary School
Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.
Fourth Grade
Elementary School
This science fair project idea explores the egg's thin membrane.
Fourth Grade
Elementary School
This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.
Fourth Grade
Elementary School
In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.
Fourth Grade
Hard
This science fair project idea determines if the color of light affects the growth of plants.
Fourth Grade
Elementary School
This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.
Fourth Grade
Ecology
This science fair project idea determines if the temperature of rubber effects how high it bounces.
Fourth Grade
Elementary School
This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.
Fourth Grade
Elementary School
Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling
into the moat.
Fourth Grade
Engineering

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