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.

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.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

This project explores ways to prevent static electrical shocks.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

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

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

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

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

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.

Help your child celebrate the summer and the sun by making a sandy seascape.

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.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

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.

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.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Turn the common pastime of constructing paper airplanes into a lesson on the physics of aerodynamics and flight with this fun science activity.

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.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

Challenge your learner to design and build a city of their own in this creative engineering activity.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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