What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Help your child plant a "tea garden": a garden made of herbs for making teas.

This project investigates the affect of storage temperature on microwave popcorn.

Learn all about balance and motion as your child designs a corn maze!

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

Science fair project which determines whether people are more likely to follow rules if they are easy to understand.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

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!

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

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

Hatch a praying mantis egg case in a homemade habitat with your child's help! This is an amazing experiment in science and nature for kids of any age.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

Make a planter full of delicious seasonings and classic grilling vegetables, great for a Fatherâs Day gift or a fun start-of-summer outdoor activity.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Kids will learn about the interaction of lactose and lactase in milk and discover why we describe enzymes as catalysts in this fun science fair project.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

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

This science fair project idea explores whether talking to a plant will help it grow.