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In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Discover whether a metal will expand under hot water.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

This science fair project teaches students the differences between fruits and vegetables.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

This science experiment tests if dog saliva can really help heal wounds.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.