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

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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.

Get ready for a yummy taste test! Just pour the milk -- and make sure you have some chocolate chip cookies on hand.

Learn how different types of soil affect how animal tracks form in this experiment!

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

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