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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 science fair project idea explores the different properties & interactions of sugar molecules.
Fourth Grade
Elementary School
This science fair project idea explores the different parts of the human ear and  models how the human ear reacts to sound waves.
Fourth Grade
Elementary School
Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.
Fourth Grade
Medium
Fourth Grade
Elementary School
This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.
Fourth Grade
Elementary School
In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.
Fourth Grade
Easy
Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.
Fourth Grade
Elementary School
In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.
Fourth Grade
Third Grade
This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.
Fourth Grade
Elementary School

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