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

In almost every preschool classroom is a sensory table. Learn how to make one at home!

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

In the mood for a bit of silly science? Help your child create a truly one-of-a-kind planter out of a potato head!

Set up a fun guessing game for your curious kindergartener, one that will test her ability to use all five of her senses.

Help your little one figure out the differences between the worlds of air, land and water, a huge step in understanding how our environment works.

Take a nature walk in your backyard or local park to find one object for every letter of the alphabet. Then put them together in this handy nature book.

Recycling may be a confusing concept for your little one, so take the time to teach them the magic of compost - right in your own backyard!

This project examines who can jump higher, boys or girls, younger people or older, and how these two factors, gender and age, interact with one another.

Figure out which fruit has the most vitamin C (ascorbic acid) in this fun science project!

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

In this science fair project, young children will become aware of and have the opportunity to experience the four basic tastes: sweet, sour, salty, and bitter.

This project explores the interaction between air pressure and playing surface in determining a basketballâs bounce.

Make sourdough bread...and learn some colonial history and modern science in the process!

Combine science with reading and art to help your first grader create an attractive holiday gift for a beloved friend or relative.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Invite your third grader to do taste test science to observe how a strawberry tastes when it is paired with various condiments. The results may be surprising!

Make an edible play dough with your child to help her develop her sensory and motor skills.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

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

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Water, along with soil and light, is a necessary component for plant growth. So what's better for promoting plant growth: tap water, or rain water?

This project examines which type of dance burns the most calories.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

This project determines how much the rebound rates of tennis balls change after ten games.

Determine which video game elevates the heart rate best and burns the most calories.

Can you wink? Is your ability to wink genetic or simply based on chance? Find out in this science fair project idea!