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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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Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.
Fourth Grade
Elementary School
This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.
Fourth Grade
Botany
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
In this science fair project you will make a model of a cell membrane using very simple material.
Fourth Grade
Third Grade
Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.
Fourth Grade
Elementary School
In this project, waves of vibrations are experimented with using water in glasses.
Fourth Grade
Elementary School
This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.
Fourth Grade
Easy
Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.
Fourth Grade
Fifth Grade
Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.
Fourth Grade
Second Grade
Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.
Fourth Grade
Second Grade
Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.
Fourth Grade
Fifth Grade
This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.
Fourth Grade
Elementary School

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