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

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Can't make it to the beach? Bring the science of ocean waves home with this fun earth science-related craft.

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

Check out this cool science fair project idea to learn why it is important for kids to eat healthy foods like fresh fruits and vegetables.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Observe which kind of fresh long-stemmed flower will last the longest after being picked.

Take a closer look at the soil that surrounds us, and give your child a lesson in Geology 101!

Cleaning can be a chore, but not with this sudsy experiment!

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

What colors can dogs see? Do they only have black and white vision, or can they see other colors too? Find out in this cool science experiment!

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

In this activity, find out who the flowers' "partners in crime" are by being a flower spy!

It has long been believed that weather influences mood and behavior. This experiment will evaluate if weather can really impact the way people feel.

Science fair project idea helps conceptualize probability. Compare probabilities and outcomes of cards drawn from a standard playing deck.

In this "paper and pen" science fair experiment, students will research the difference between standard time and astronomical mean time.

Help kids tap into their inner inventor by teaching them how to make peanut butter through trial, error, and lots of taste testing!

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

This project examines what types of objects burn and which burn faster and cleaner.

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.

This science project investigates the influence of different genres of movies on appetite.

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

In this activity, your kid has your permission to get his socks nice and filthy. In fact, it's a necessity, because those socks are going to make a garden.

Give your child an introduction to food preservation by making and canning your own yummy, homemade pasta sauce!

This science fair project idea determines whether dogs can be trained faster using a food reward or praise.

Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

Blanket forts are a kid classic! Let your child create a âfortress of solitudeâ on his own for reading, telling scary stories or for cozy cocooning.