Give your budding young observers a chance to discover simple machines at use in their own home.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

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?

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

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

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

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

When you see those sunscreen "protection levels," what does that really mean? Try this experiment to find out.

Household items and a bit of imagination will create a CSI kit for your child to have investigative adventures with. Explore the world of forensic science!

Help your child get a grasp on what it was like to build gigantic ancient structures with this easy engineering activity about science and physics.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

Making your own glass cleaner is easy, effective and inexpensive!

Popsicles aren't just for the summertime, this activity takes cold and turns it into a creative and tasty science experiment.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

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 fair project, kids start a chemical reaction that will make a balloon inflate itself!

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