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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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Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.
Fourth Grade
Easy
In this science fair project, students create their own miniature salt flats at home.
Fourth Grade
Fifth Grade
In this CD hovercraft science project, students will construct their own DIY hovercraft.
Fourth Grade
Physics
Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.
Fourth Grade
Second Grade
This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.
Fourth Grade
Elementary School
Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.
Fourth Grade
Easy
Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!
Fourth Grade
Zoology
In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.
Fourth Grade
Easy
Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.
Fourth Grade
Weather and Climate
Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!
Fourth Grade
Easy
This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.
Fourth Grade
Elementary School
In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!
Fourth Grade
Elementary School

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