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Kids will create their own version of Richard Feynman's rubber band heat engine to learn about thermodynamics with this cool science fair project idea.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

This science fair project idea produces sounds by creating vibrations using different objects.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

In this science fair project, students create their own miniature salt flats at home.

Grow borax crystals and get your child excited about Earth science with this crafty science experiment.

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

Learn with makes water molecules work with this fun and easy science activity!

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

This science fair project idea determines the probability of a coin landing heads or tails.

What is condensation? Little mad scientists will learn about condensation, states of matter, and air pressure by conducting this cool science experiment.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

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

This science project allows students to study the psychology of happiness.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

This science fair project idea examines the reason boats are shaped and engineered.