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This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

This science fair project idea investigates if fats add to the flavor of food.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

This science fair project idea investigates how magnetism can defy the force of gravity.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

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

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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

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

This science fair project idea demonstrates that plants give off water.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

In this hands-on activity, kids learn what it takes to foster seedlings into full-grown plants, all in a regular old soda bottle!

This fall, make a leaf crown that will encourage creative play and your child's interest in the natural world while you help them build fine motor skills.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Science fair project that examines condensation and the conditions needed in order for dew to form.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.