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

Magic, science, or household cleanser? Let your second grader decide with this practical, nontoxic chemistry experiment with acids and bases.

This second grade arts and crafts activity is all about caterpillars emerging from their cocoons as butterflies.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

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.

This science fair project teaches students the differences between fruits and vegetables.

If your science savy third grader is up for a challenge, let her bend light with a casserole dish!

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

In this design challenge, your child will make a bottle rocket using typical household items.

This science fair project idea investigates how magnetism can defy the force of gravity.

Create a three-dimensional X-ray of your child's hand in this simple modeling activity. All you need to get started are black paper and drinking straws

Slip some science into storm watching with a homemade rain gauge!

Your child will do a fun science experiment using soap and pepper flakes to help understand the concepts of water molecules and the surface tension of water.

Help your kid feel like a superhero with this safe and fun science experiment that creates an electrical charge that's like a mini lightning bolt!

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

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

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.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Encourage local wildlife to settle down in your backyard with this adorable bird nest craft.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

Your child will create her own falling snowflakes using white paper and glue them over a tree, so it appears as if they are falling from the sky.

Determine if gender affects the ability to identify different smells.

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.

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.

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

This science fair project idea determines what household items are good conductors of electricity.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.