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

Students explore hot desert plant adaptations in this cool science fair project by observing how these organisms prevent excessive transpiration.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Learn how to be a bird scientist in this simple project of watching feathered friends in their habitat.

Science fair project which measures the shadow cast by a meter stick at various times in order to predict the circumference of the earth.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

How good are humans at sound localization? Kids can try this cool science fair project idea to see how good their friends are at judging sound direction.

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Is there a relationship between caffeine and heart rate? Students will determine the effect of caffeine on heart rate in this fun science fair project.

People have favorite flavors, but what about ants? Which ant food is the most popular?

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.