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 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.

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.

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.

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!

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.

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

Introduce your fourth or fifth grader to volume by having him build rectangular prisms, and then count each sugar cube to check his volume calculations.

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

Play this "subtraction war" card game with your second grader and watch his math facts mastery leap forward!

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

Liven up a lesson about graphing by helping your third grader compile a bar graph from his classmates' birthday data.

This hands-on activity gives your child an opportunity to apply various strategies to solve a problem and to check if his answer makes sense.

Play this daily money game with your 2nd grade child to help his math skills.

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

Here's an enjoyable at-home activity that gives your child step-by-step practice identifying the important parts of an article and organizing his ideas.

Does your fifth grader need a study buddy for geometry? Forget about a tutor. Help him make his own geometry dictionary!

With this fun craft activity, your child can design and "make" his own money, for use as currency and math practice at home.

Here's a math activity that uses coin riddles to help your third-grader improve his coin-counting and logical thinking skills.

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

Help your child improve his coin counting skills in these two math games that have him race to reach $1.00.

Have your child construct his own Christmas tree from construction paper while cutting, overlapping and measuring to create an adorable modern design.

Most timeline activities are all about history. Make timelines more relevant and personal for your child by focusing on the hours and minutes of his day.