This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

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.

Got a shoelace? Got a kindergartener? Help your child learn to use the number line by creating one out of a lace.

Learn how to make a paper snowflake with these simple instructions. Help your child learn how to make a paper snowflake with only paper and scissors.

Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

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.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

Check out this fun science fair project idea to learn about seismic waves and how fast they travel during an earthquake.

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.

Tangrams are a kindergarten staple, but now it's time to take them to the next level! Get your child started on geometry with this tangram puzzle.

Got a fussy eater on your hands? Here's a great way to make fruit appear more appealing, and make eating it a lot more fun, too!

Declare a "Pocket Day" in your house and help your child practice his addition skills as he counts how many pockets the family is wearing that day!

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!

Got a kid who loves fashion? Help her develop her own unique style with this tie-dye project using natural dyes.

This experiment investigates if stress alters body temperature.

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

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!

Make a lei and bring a touch of the tropical lifestyle into your home!

Help your kindergartener practice his shape recognition and develop his fine motor skills by making a scarecrow at home.

Explore the best way to store popcorn kernels. It examines the impact of moisture and temperature on unpopped kernels.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Your child will need to combine his sporty hand-eye coordination skills with his math skills to become the bullseye king.

This fun game helps children learn to estimate the most basic unit of time--a minute--without a clock.

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

Will your liquid weigh less once you remove the fat from it? Find out in this science fair project idea.

This experiment investigates if small changes in your diet can alter your basal body temperature.