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

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.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

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.

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!

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

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

This science fair project idea experiments with spinning color wheels and optical illusions.

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

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

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

Help your curious third grader construct a dazzling spinning wheel that will teach him about the science behind colors while providing some silly entertainment!

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!

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

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

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

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

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

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

I scream, you scream, we all scream for homemade spearmint 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!