In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

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

In this fun activity, your child will create their very own solar oven to bake s'mores!

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

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

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

Learn with makes water molecules work with this fun and easy science activity!

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

What happens when light hits a hard surface? Find out by conducting a simple light reflection experiment with your preschooler.

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.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

Check out this mind-blowing experiment in which a hard-boiled egg will fit through an impossibly small opening with the help of only a few matches!