Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

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

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

The objective this science fair project is to determine whether a bigger bag will allow a homemade hot air balloon to fly higher than smaller bag.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

The objective of this science project is to determine the length of time for different seeds to germinate.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

This experiment explores whether reading text on a computer screen or type on paper leads to better retention of the information read.

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

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This project examines whether people's taste perception is influenced by what they see.

In this project children practice the scientific method while playing with puffy paint.

The project investigates how water and movement affects erosion.

This science fair project idea provides evidence that air is everywhere and takes up space.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This science experiment has students test whether a snail moves faster on concrete or dirt.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This science fair project idea explores how length affects the weight a bridge can hold.

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

This science fair project idea explores which fruit molds the fastest.