What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

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.

Slime: It's oozy, it's goopy, and it's just plain fun! Learn how to make slime with this fun science fair project.

Test whether plants can grow without sunlight and water.

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

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

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

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

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

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

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Children are imaginative story-builders. Create a shoebox habitat with your child to put those budding creative instincts to good use.

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.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Here's a household scavenger hunt that shows kids the natural sources behind everyday objects...and builds reading skills, too!

Combine science with reading and art to help your first grader create an attractive holiday gift for a beloved friend or relative.

Help your first grader explore the world of scientific measurement by "weighing" fruit with a "water scale"!

Let your young adventurer go bug hunting in the great outdoors with their very own bug net!

This science experiment tests whether warm or cold water works best in making cut flowers last longer.