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.

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

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.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

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.

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!

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.

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

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.

Review fractions with your budding mathematician when you play this fun, educational math board game.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

When you're studying the Mayflower, numbers can be an important part of the history...and a great chance to practice elementary math!

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

One way to "trick" your child into getting extra practice with one-step equations is to play a variation of the classic game, tic tac toe.

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

Use a recycling project to hone your childâs sewing skills and clean up her art supplies when she turns the leg of an old pair of jeans into a storage basket.

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?

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

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

Race to double numbers in this competitive card game. Try one-digit or two-digit numbers, or more!

Try this recipe with your child and explore Ethiopia through one of its dietary staples: injera, or flat bread!

Here's a hands-on way to help your child understand how common fractions can be equivalent.

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.

Help your child apply his math skills the next time you cook a family meal similar to one you'd buy at a restaurant.

Try this entertaining and educational math activity that will teach your child how to add and subtract decimals.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.