Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

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

There are hundreds of properties in rocks which you can describe, so get your geology goggles on and get ready to rock your child's science skills.

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.

Protozoa and ciliate and amoeba, oh my! The objective of this science fair project is for students to use a microscope and identify microscopic life.

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.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

This science fair project enhances the understanding and awareness of energy use and explores the concept of energy efficient.

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.

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

This science fair project idea deals with the qualities of shade on a sunny day.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

How clean is the air we breathe? The answer might surprise you. Learn how to investigate local air quality with this cool science fair project.

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

This simple experiment serves as an introduction to the greenhouse effect.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

Want to help make studying the nervous system a little more fun? This thinking cap is a great way to learn external human brain anatomy.

The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

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

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

Teach kids about a fun way they can remember this more efficiently- the power of mnemonics. Kids will be amazed.

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