Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

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

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

This science fair project idea's objective is to become familiar with items your family regularly throws in the trash.