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.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Who knew that you could make beads out of rose petals? Not only can it be done, but the beads smell wonderful!

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Determine if gender affects the ability to identify different smells.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

This science experiment has students test whether a snail moves faster on concrete or dirt.

Explore scientific concepts with this experiment that introduces kids to the scientific method!

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

Here's a fun and simple activity to introduce your child to surface tension, and pull an awesome stunt in the process!

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

In this fun science fair project idea, kids will experiment with various methods in order to discover the fastest way to cool a soda.

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

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

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

The goal of this project is to create an exciting topographical map out of dough.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.