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Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Is that seed alive or not? Here's an exciting way for kindergarteners to make a seed museum that your child can watch, using simple household materials.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.

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

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

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

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

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

In this science fair project you will make a model of a cell membrane using very simple material.

This project examines whether people's taste perception is influenced by what they see.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

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.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Make meringues with your first grader and see how states of matter can transform before your very eyes. Here's how:

Here's a simple craft activity that can help your youngster better visualize the life cycle of a frog as a circle.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.