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

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

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

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

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

This science research project challenges students to think of more effective lobster farming methods.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This classic children's game demonstrates how sound travels through air vs. through a solid.

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

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

Can a horse lead itself to the carrot? Train your horse with carrots and boxes and test horse memory in this fun zoology science fair project.

Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.

This science fair project idea demonstrates that light travels in straight lines and experiments with reflecting light.

Discover whether a metal will expand under hot water.

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

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

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

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

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.