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

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.

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

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

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.

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

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