This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

Learn about lateral earthquake motion and its effect on high rise buildings in this simple 4th grade earth science experiment.

Learn all about balance and motion as your child designs a corn maze!

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.

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

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

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

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

Let your fourth grade chef mix up butter and sugar with scientific principles about different states of matter, and get delicious toffee, too.

What do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Here's a fourth grade science craft with lots of benefits: it's good for birds, good for your child's learning, and good for the planet, too.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

Make a spring collage with your child to get them outside and those creative juices flowing!

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

This science fair project idea produces sounds by creating vibrations using different objects.

A homemade lava lamp gives any room a retro flair. Find out how to make a homemade lava lamp, and learn some science too, with this educational activity.