This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

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.

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

Wonder why bugs always fly around your lights at night? This experiment determines whether insects are attracted to the heat or the light.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Are you looking for an out-of-this world activity that's both fun and educational? This solar system garland is a great way to introduce your child to astronomy.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Using simple materials found around your home, you can reinforce the static electricity concept by helping your child build a simple device with zapping power!

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.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

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

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

Learn about Ikebana, or the Japanese art of flower arranging, with your child while artfully arranging spring flowers!

Believe it or not, images that are cast upon your eye's light-sensitive screen (called the retina) are upside down. Here's a fun, fast experiment to prove it!

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

This science fair project idea examines the reason boats are shaped and engineered.

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.

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.