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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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What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!
Fourth Grade
Weather and Climate
This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.
Fourth Grade
Psychology and Sociology
This project examines the common belief that with increasing age, people are less willing to adopt new technology.
Fourth Grade
Psychology and Sociology
This project examines whether people's taste perception is influenced by what they see.
Fourth Grade
Psychology and Sociology
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
What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.
Fourth Grade
Weather and Climate
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
Weather and Climate
In this science fair project, students make their own rain gauge to measure rainfall.
Fourth Grade
Weather and Climate
Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.
Fourth Grade
Weather and Climate
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
Weather and Climate
Are crickets affected by temperature? Test your knowledge! This project examines whether temperature has any effect on the chirping of crickets.
Fourth Grade
Psychology and Sociology
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
Psychology and Sociology
This project explores whether people's choice of a 'random' number is not as random as it seems.
Fourth Grade
Psychology and Sociology
Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.
Fourth Grade
Weather and Climate

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