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.

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!

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!

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

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

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

This science fair project demonstrates the principles of reflection through simple experiments involving mirrors and light.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

This science fair project idea explores the relationship between oil and water in terms of density as well as hydrophilic/hydrophobic compounds.