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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 whether the process used to dry the beans we eat for food renders them unviable.
Fourth Grade
Botany
This science experiment tests whether warm or cold water works best in making cut flowers last longer.
Fourth Grade
Botany
This science fair project teaches students about wilting and browning of salad greens.
Fourth Grade
Botany
This science project has students collect wood samples and invent new uses for different types of wood based on its properties.
Fourth Grade
Botany
Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.
Fourth Grade
Botany
This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.
Fourth Grade
Botany
In this project, sunlight is blocked from a leaf in order to see the affect that sunlight has on leaves.
Fourth Grade
Botany
The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.
Fourth Grade
Botany

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