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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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In this project students experiment with making music using only glasses of water.
Fourth Grade
Elementary School
This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.
Fourth Grade
Elementary School
Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.
Fourth Grade
Elementary School
This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.
Fourth Grade
Elementary School
This project investigates the affect of storage temperature on microwave popcorn.
Fourth Grade
Elementary School
This science fair project idea  produces sounds by creating vibrations using different objects.
Fourth Grade
Elementary School
In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.
Fourth Grade
Elementary School
In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.
Fourth Grade
Kindergarten
This science fair project idea identifies trees using a dichotomous key.
Fourth Grade
Elementary School
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
Compare animal and plant fats and observe, and record, and draw conclusions about their similarities and differences.
Fourth Grade
Chemistry
This science fair project idea creates cool new colorful fabric pattern designs and experiments with the mixing of colors.
Fourth Grade
Elementary School
This science project idea examines the effect of microwaving on various objects.
Fourth Grade
Elementary School
The project determines determine if a sports drink affects the heart rate of a student athlete during exercise.
Fourth Grade
Physical Science
This science fair project idea examines liquids of different densities.
Fourth Grade
Elementary School

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