Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Did you ever think you could make colors disappear right before your eyes? This science experiment is just like a magic trick: now you see it, now you don't!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

I scream, you scream, we all scream for homemade spearmint ice cream!

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

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.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

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

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

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!

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Did you know a mouse eats almost fifty times as much as a cow? Find out how and test out the strange science with your friends!

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

The objective of this science project is to determine the length of time for different seeds to germinate.

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

Make a backbone model to explore human anatomy and life science.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

Beetles come in many shapes and colors. Here's how your second grade child can create his own beetles to paint and play with!

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

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.

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

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.