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

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

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

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

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

This project compares the strength of one, two, and three-ply toilet paper.

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

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.

Make a backbone model to explore human anatomy and life science.

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

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

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

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

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

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

This science fair project idea explores whether talking to a plant will help it grow.

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

Science fair project that examines condensation and the conditions needed in order for dew to form.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

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

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

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

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

This science fair project idea explores substances that cause a bubble to last longer.

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 explores how the shape of a boat affects its density and how much weight it can float.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

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