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

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Here's a pumpkin nut bread recipe that makes for a wonderful project on a crisp autumn afternoon.

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

Encourage your child to eat nutritiously by having them build this delicious summer fruit cone!

Toss playing cards into boxes while you practice addition and multiplication with decimals in this fun, fifth grade math game.

Help your third grader author a lovely limerick in honor of Valentine's Day! He'll be delighted to compose and recite this nonsensical poem.

Construct and experiment with a periscope using reflected light rays to gather an image.

Design a colorful leprechaun trap—and make some memories—with this fun St. Patrick's Day craft project!

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

Race to double numbers in this competitive card game. Try one-digit or two-digit numbers, or more!

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This science fair project idea produces sounds by creating vibrations using different objects.

Light up your home with this lightning bug craft that will keep glowing even after summer's gone!

Here's a hands-on way to help your child understand how common fractions can be equivalent.

Celebrate the life and work of Dr. King by making a timeline of some major events during his life and the Civil Rights Movement.

Invite your second grader to help you measure and mix these fresh, cool concoctions!

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

Sure, you can go out and buy a box of Valentine cards--but for a special message try this simple craft activity to make someone's day.

All you need to put together this guitar is an old shoebox. Soon your kid will be rocking out while saving room in the landfill.

Play tic-tac-toe and help your kid memorize multiplication facts!

Your child can create a trendy, retro felt flower pin that will remind her of the natural beauty of flowers in full bloom no matter what time of year it is!

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

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