What's a crater, and how does it happen? Here's a kindergarten experiment with safe, nontoxic ingredients.

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

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

Hatch a praying mantis egg case in a homemade habitat with your child's help! This is an amazing experiment in science and nature for kids of any age.

Many substances are compounds of different elements. This experiment combines iodine and zinc to make zinc iodide.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Test your skills as a weather forecaster, and learn some science terms on the way!

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

Learn about our response to scents that existed in our environment over evolutionary time and consider why scents might affect our mood state.

Science fair project idea examines different techniques for memorization. Analyze results of memory tests to determine which method is most effective.

In almost every preschool classroom is a sensory table. Learn how to make one at home!

It's a rare kid who doesn't like a sandbox. Next time you're out digging, build in some earth science, too.

In this math and science activity, help your middleschooler learn about proportion and measurement with just her shadow and a tape measure!

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?

Your child can help your family pet take a breather, and help herself relax, too, with this soothing activity.

Science fair project that cultivates slime mold and monitors the stages of its development.

This easy Halloween-themed science experiment for first-graders is perfect for chilly October afternoons or great as a Halloween party activity.

If your child aspires to be the next Frank Lloyd Wright, we've got some tips on building sand castles that last.

Use popcorn in this tasty experiment to explore the five senses at home with your kindergartener!

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

This quick and simple preschool mirror activity will introduce your child to the science of reflection and light with a flashlight experiment and picture game.

What is a series circuit and how does it work? Learn about voltage, electrical current, and resistors in this cool science experiment!

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

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Compare the amount of ozone in various locations with this science fair project that will have your kid create her own ozone strips!

Here's a fun activity to reinforce the physics concept of stored energy for your middle schooler.

This activity is a great introduction to polymer chemistry. It might seem complicated, but all you'll need is the material found inside of a baby's diaper!

Conduct a simple science experiment to see if flowers from your garden pass the acid-base indicator test with this exciting chemistry activity.

Brighten up your home with this fun activity! Make a summer sun print and teach your child the art of easy print making.