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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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In this science fair project you will make a model of a cell membrane using very simple material.
Fourth Grade
Third Grade
This science fair project idea investigates how color affects temperature.
Fourth Grade
Elementary School
This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.
Fourth Grade
Elementary School
The science project fair idea explores the interaction between your nose, mouth, and brain when tasting a new food or drink.
Fourth Grade
Elementary School
This science fair project idea  investigates how optical distances change the apparent size of an object as seen through a magnifying lens.
Fourth Grade
Elementary School
Design a survival kit. Brainstorm various survival scenarios. Address basic human requirements and natural resources. Describe each tool as well uses.
Fourth Grade
Elementary School
The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.
Fourth Grade
Elementary School
Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.
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
In this project, sunlight is blocked from a leaf in order to see the affect that sunlight has on leaves.
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
This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.
Fourth Grade
Third Grade
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

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