Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Hone observational skills and introduce the basics of data interpretation with this data gathering activity all about the different colors people wear.

Do you think heat can affect a plant's growth rate?

Nothing chases the blues away like a trip to the boardwalk. Bring the fun home with this do-it-yourself version that sneaks in some math practice.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Most parents probably wouldn't mind subtracting 8-9 years off their age. Here's a fun third grade subtraction activity that may do just that.

Challenge your third-grader to sharpen her new math skills--and maybe do the planet a favor, too.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

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!

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

Delay your child's sugar overload, and develop his critical thinking skills, by doing some "sweet sorting" of his Halloween treasures!

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

How powerful is the reaction between baking soda and vinegar? Find out here!

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

This project tests the hypothesis that dark colors absorb more heat than light colors.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Try this fun math card game with your third grader to practice division, addition, and problem solving!

Get estimating with this spooky activity that asks your young mathematician to rely on their problem-solving skills to figure out how many items they believe are in spooky Halloween jars!

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Make this easy recipe for Halloween, featuring white chocolate and pretzels, for a crispy, creepy treat!

Find the area in this fun math card game. You'll help your child start thinking in terms of units as you create shapes out of playing cards.

Help your second grader to a better understanding of how to count and represent money with age old game of tic-tac-toe.

This activity is a great starting point for practicing mental math because it is quick, easy and involves only simple addition facts.