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

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

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

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

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

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

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!

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

Do you think heat can affect a plant's growth rate?

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!

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