In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

This science fair project idea investigates the difference in reaction times between boys and girls.

This science fair project teaches students about wilting and browning of salad greens.

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.

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

This science fair project idea determines which method of hand cleansing is the most effective.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

This science fair project idea demonstrates that plants give off water.

Determine if gender affects the ability to identify different smells.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.