This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

In this science fair project, young children notice and track changes in trees throughout the year.

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

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

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

This science fair project introduces children to static electricity and the idea that electricity is more than lights and plugs.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

Can you fool your eyes and your brain with an optical illusion? The purpose of this science fair project is to demonstrate various kinds of optical illusions.

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

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

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.

In this science fair project, young children will become aware of and have the opportunity to experience the four basic tastes: sweet, sour, salty, and bitter.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

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

In this science project, young children observe, record, and create collections of colors in their world and increase their powers of observation.

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

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.

Here's an arts and crafts activity for preschoolers and pre-kindergarteners: build brick buildings with homemade mud bricks made from dirt and water.

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

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

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

This simple project makes young children aware of their sense of smell and its capacity for providing them with information about their world.

This play-activity causes young children to focus on and become more aware of their sense of hearing and the power of their ears.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

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

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

This project makes young children uniquely aware of their sense of touch and its ability to alone give them information about the world around them.