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.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

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

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

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

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

Reuse and recycle cardboard tubes to make spooky spiders, kooky caterpillars, wacky worms, and more.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

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.

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Start your toy engines -- this is going to be a fast and friction-filled race!

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

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

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

This science fair project idea investigates how magnetism can defy the force of gravity.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

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

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

How much water comes out of snow? Explore this timely question with your kindergarten scientist with this easy winter experiment.

Make a kindergarten "discovery table" that reinforces both science and writing skills. Here's how:

You don't need to head to the Arctic to experiment with life in an igloo. Learners can build their own ice igloo at home from water and empty milk containers.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

Create homemade seed packets with your kids. This activity combines your kids' love of science and the outdoors with a little writing and drawing fun.