Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

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

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

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

Make a spring collage with your child to get them outside and those creative juices flowing!

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.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Satisfy your sweet tooth with this easy summer activity! Make homemade ice cream and let your child practice his science skills.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

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

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

Learn all about balance and motion as your child designs a corn maze!

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.

This snowman's not abominable, he's adorable! Your child can bring her very own snowman to life while practicing how to create texture.

Try this simple 2nd grade science experiment to teach your child about the principles of luminosity and light reflection.

Has your child ever played weatherman? Try this science activity that lets kids try their hands at observing and predicting the weather.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

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

Make all-natural dye from vegetables to create gorgeous homemade play-silks!

This winter garden project is just about bomb-proof, and believe it or not, it might even make a great gift. So get craft happy with your first grader!

Teach your child about using pumps to move water in this simple and educational preschool science activity!

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

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.

Allow your first grader to get his artwork outdoors this summer by letting him create a garden art box for his arts and crafts supplies.

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

In first grade, children are introduced to fractions. Here's a recipe that combines fraction practice with winter fun and lets kids actually paint the snow!