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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's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.
Fourth Grade
Physics
This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.
Fourth Grade
Elementary School
In this science fair project, students will try to discover if test subjects can detect the presence of Monosodium Glutumate (MSG) in food.
Fourth Grade
Elementary School
This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.
Fourth Grade
Elementary School
The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.
Fourth Grade
Elementary School
This project investigates the affect of storage temperature on microwave popcorn.
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 project idea examines the effect of microwaving on various objects.
Fourth Grade
Elementary School
In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.
Fourth Grade
Easy
Take a dive into the candy jar with this yummy science experiment.
Fourth Grade
Chemistry
This science fair project teaches students about wilting and browning of salad greens.
Fourth Grade
Kindergarten

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