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Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

How fast does light travel in different mediums? Kids conduct a cool refraction experiment in materials like water and air for this science fair project.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Science fair project that determines whether mass and weight are the same or different.

In this cool psychology experiment, study how companies air commercials to strategically advertise to viewers who will buy their products.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

Investigate which substances are most effective at removing salt from water.

Determine whether fresh vegetables have more calories or less calories than canned vegetables.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Kids will make a homemade electroscope and explain how it detects static charges through induction in this fun science fair project idea.

Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.

This science fair project idea explores the different properties & interactions of sugar molecules.

Research hemispheric brain dominance in order to determine if you have a dominant side. Test foot, ear dominance. Record observations.

Melt the ice, but save the lawn. The objective of this science fair project is to explore the effects of different substances on melting ice.

The purpose of this science fair project is to investigate which food wrapping works best to keep refrigerated and non-refrigerated foods from spoiling.

Determine whether the application of Febreeze will lower the bacterial count.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Determine the efficiency of multi-tasking by comparing how long it takes students to complete different tasks. Collate data, complete Summary Chart.

The objective of this science project is to determine whether the brain first processes colors, shapes, or words when given conflicting messages.

This project examines the vulnerability of fruit flies, Drosophila melanigaster, to irradiation. Will exposure result in mutations?

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

The objective of this science fair project is to determine whether planaria reproduce asexually by regeneration.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

Check out this cool science fair project on identifying rocks and minerals for kids.

This baseball science fair project explores the concept of an object's center of percussion to determine if the "sweet spot" has a scientific basis.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

Check out this free high school science fair project to explore the physics of the Coriolis effect with a homemade Foucault Pendulum.

Check out this fun middle school science fair project idea on Newton's third law of motion and how you can change the speed of a rocket.