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.

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

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

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.

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!

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.

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.

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!

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.

Find out whether soil amendments can improve soil conditions and help you grow a bigger beanstalk in this ecology experiment!

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

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

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.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

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.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.