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.

You don't need to wait for rain to see a rainbow. Make one yourself, and teach your child about light and weather in the process.

Wool can absorb 1/3 of its weight in water, while still keeping the body warm. She can test this theory by performing a scientific sock comparison!

Before Twitter, birds were the ones tweeting, not humans. Have your child discover the magical sounds of nature while recording birds around his neighborhood!

In this activity, your child will be challenged to make a tower using paper cups.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

In this activity, your child will be asked to create a boat that can successfully float while holding 25 pennies.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

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

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

This science fair project idea demonstrates that plants give off water.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

Discover whether cold or hot water from the faucet will boil faster on the stove.

Come take off your shoes and explore with your feet. Your child will embark on a barefoot adventure as he plays with different textures.

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

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

Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Test your friends to find out if you can replicate the placebo effect's incredible results.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

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.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

This science fair project idea teaches to understand and explore the concepts of crystal formation and dissolving substances.

Teach your child how butter is created by shaking up cream the old-fashioned way.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.