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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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The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.
Fourth Grade
Elementary School
This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.
Fourth Grade
Elementary School
This science fair project investigates why the number of visible stars changes from place to place.
Fourth Grade
Elementary School
Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.
Fourth Grade
Elementary School
This science fair project idea observes products available in the school cafeteria and waste produced by these products.
Fourth Grade
Elementary School
This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.
Fourth Grade
Third Grade
This science fair project idea investigates the difference in reaction times between boys and girls.
Fourth Grade
Elementary School
Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.
Fourth Grade
Kindergarten
Universal indicator tests the pH value of various household chemicals. Chemicals react with H+ and OH- ions to produce color change.
Fourth Grade
Elementary School
This science fair project has kids conduct a blindfolded taste test to determine how smell influences our ability to taste foods.
Fourth Grade
Elementary School
Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature
Fourth Grade
Elementary School
This science fair project idea investigates whether plants can survive being frozen.
Fourth Grade
Elementary School
The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.
Fourth Grade
Elementary School
This science fair project idea discovers whether there are some objects that do not fall at a constant rate.
Fourth Grade
Elementary School
This science fair project idea compares biodiversity between drops of water.
Fourth Grade
Elementary School

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