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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.

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

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.

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

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!

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!

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

Learn to recognize symmetry by playing this game! The more you play, the better you'll get at recognizing this special characteristic many playing cards have.

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

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

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

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

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

Teach your fifth grader an important math concept with this quick and simple activity that shows them how to divide whole numbers by fractions.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

How much does 100 weigh? Play this fun guessing game with your child to commemorate the 100th day of school.

For a fun activity that takes the dull out of decimals, show you child how to gain a better understanding of decimals...as dollar amounts!

This decimal game is a great way to help your child get familiar with how decimal values work.

Expand on your childâs time-telling skills by helping him learn how an analog clock and a digital clock correspond.

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Dive into the world of cooking oil and smoke points to discover just how fast some oils start smoking.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Check out this game that provides an enjoyable way of demonstrating how recorded results can be expressed in whole numbers, fractions, and decimals.

You've heard the expression "burn rubber" but do you know how heat affects rubber? Examine the impact of temperature on rubber in this fun science experiment.

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

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

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.