Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

This science fair project idea identifies clouds as a means of predicting the weather.

Tackle both boredom and mathematics with this inventive arts and craft project!

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

Teach your kid a fun mathematical magic trick! All you'll need is a deck of cards and basic addition, subtraction, and multiplication skills.

Play multiplication war, a fun card game, with your child and before long those annoying multiplication facts will be part of her mathematical skill set.

Check out this simple version of a pairs game that's played all over the world. It's a great way to practice estimating and predicting mathematical outcomes.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

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

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

In this fun math activity, second graders will learn to estimate items in a jar! 

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

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.

Take paper football to the next level by creating a "field" with objects from around the house. A great indoor and rainy-day activity.

Countries all around the world have been using the abacus for thousands of years to make math easier. Have your kid make his own abacus to practice arithmetic.

Young physicists will wrestle with a discrepant event: the Hammer Ruler Trick. They'll make some inferences about torque, balance, and center of gravity.

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

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.

Check out this cool science fair project idea to explore the risk of mechanical deterioration of artifacts placed in a storage box due to mold outbreaks.

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.

Graph are a great way to organize information. Your child will get to practice graphing by creating a bar graph and a pictorial graph of her friend's names.

Here's a hands-on activity you can do with your fourth-grader to practice measurement and directly apply the concept of area.

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.

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