Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

This science fair project idea investigates the difference in reaction times between boys and girls.

Conduct a simple experiment with your child to study how dirt tracks change as they age in this 1st grade science activity.

In this fun guessing game, your child uses his sense of smell and taste to figure out what is in the container. Here's how to play:

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

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

How do mirrors work? What is light, and how does it travel? Explore light and reflection with your preschooler with these simple hands-on experiments.

Help your young scientist celebrate the wonders of the night sky in the comfort of your own home.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

If you're looking for something to keep your kid busy on a warm day, and give him some writing practice in the process, bring on the mud!

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

Wreath ornaments decorate your Christmas tree and act as a fun sensory craft for preschoolers. Make wreath ornaments with your child this holiday season.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

Take to the air with science by experimenting with helicopter seeds right in your own backyard!

Compare the amount of ozone in various locations with this science fair project that will have your kid create her own ozone strips!

Compare the whitening abilities of four different brands of whitening toothpaste to see which one whitens the fastest and which one whitens the most.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Examine whether males or females are more likely to have a higher center of gravity.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

How much water comes out of snow? Explore this timely question with your kindergarten scientist with this easy winter experiment.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Help your child learn about animal classification with this fun and delicious activity.

Put a twist on traditional oil painting with this fun science activity that you and your first grader can do together.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

In this science project idea learn about working of different types of smoke detectors and find out which one is the most effective for you.

Here's a pressed leaf card project that puts science and writing together for your second grader.

Here's a guide to starting a community clean-up project from scratch.

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.