Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Here's a pressed leaf card project that puts science and writing together for your second grader.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

Invite your third grader to do taste test science to observe how a strawberry tastes when it is paired with various condiments. The results may be surprising!

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

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

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

In this science project, the center of gravity is explored.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

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.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

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.

Bring a little science to your third grader's Christmas as you test out his sense of smell by exposing him to common Christmas scents found in your kitchen.

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

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

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

In this activity, your child will be challenged to make a tower using paper cups.

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

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!