Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Here's a household scavenger hunt that shows kids the natural sources behind everyday objects...and builds reading skills, too!

How do organic materials become soil? This science experiment measures what materials biodegrade.

Let your kid experiment with textures among fabric and other materials that are smooth, rough, soft, or slippery—and then they'll make a texture book!

Use natural materials to try out a new kind of weaving. Your child will enjoy gathering their materials outside and then using them to create a piece of art!

Create a self-portrait from natural materials in this collage craft activity!

In this activity, your child will be challenged to use simple materials to create a catapult for a small, lightweight toy.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

Give some of your local ladybugs a warm place to stay for the winter by making a ladybug home with recycled materials.

What better way to nurture your child's imagination than by making a fairy house out of materials found in nature!

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

Use simple materials to build a "worm hotel" with your kindergarten soil scientist...and see what worms really do all day.

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

Is that seed alive or not? Here's an exciting way for kindergarteners to make a seed museum that your child can watch, using simple household materials.

This adventurous art project will send kids on a scavenger hunt for fall materials they can use in their artwork. This craft also teaches kids about seasons.

Do this experiment to help your first grader understand how salt can be removed from salt water. All it takes are a few household materials.

For your budding first grade scientist, all you need is some simple, natural materials to create an amazing ant farm. Here's how to get started.

This science fair project examines how seeds hitchhike on animals and clothing.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Does your child love learning about dinosaurs? Does he like digging around in search of hidden treasures? In this fun activity he'll do both!

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

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

In this activity your child will create their very own marble maze!

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

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.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Make a spring collage with your child to get them outside and those creative juices flowing!