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 construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

Can you dig it? This science experiment isn't for kids who like to keep their hands clean.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

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

This activity allows your kindergartener to translate what they observe into a beautiful poem.

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

Use popcorn in this tasty experiment to explore the five senses at home with your kindergartener!

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

Science fair project that examines condensation and the conditions needed in order for dew to form.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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

Teach your first grade scientist the difference between liquids and solids using maple syrup.

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

Do different types of oil mix or stack? Find out in this science fair project idea!

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

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

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

Show your preschooler how to make a print of a butterfly using her hand as a tool--a great way to stimulate her sense of touch.

Introduce your child to preliminary science concepts by challenging them to do this fun and simple cloud observation activity.

In this kindergarten activity your child will create a map of your house and use a magnet to move pictures of your family through the house!