Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

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

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

Learn with makes water molecules work with this fun and easy science activity!

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!

When critters protect themselves by taking on the patterns of nature, it's called "camouflage." Play this camouflage matching game with your child!

Get your fifth grader involved in some earth science by helping her plan and create her very own rock collection.

This science fair project teaches students about wilting and browning of salad greens.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Set up a fun guessing game for your curious kindergartener, one that will test her ability to use all five of her senses.

What's a liquid? What's a solid? What better way to experiment than by turning a childhood favorite, ice cream, into a homemade science lesson!

This science fair idea is a great way for kids to explore static electricity. Kids will give a comb a static charge and watch as it separates pepper from salt.

Encourage local wildlife to settle down in your backyard with this adorable bird nest craft.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

Science fair project which determines whether a person's taste in music is dictated by the key that the song is written in.

Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

Discover whether a metal will expand under hot water.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Using a toy race car kids create a visual model of the Doppler Effect.

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

This science fair project idea researches the different layers of the atmosphere and creates a visual representation of the atmospheric layers.

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.