There's more to that glowing ball of light in sky than most children realize. From the overall structure of the solar system, to the changing of the seasons, these hands-on lessons open the eyes of young scientists to...

The absolute value of a number a is written as |a| and represents the distance between a and 0 on a number line. An absolute value equation is an equation that contains an absolute value expression. The equation |x|= a has two solutions...

This Java applet creates a model of a solar system with user-defined data. Users can create a solar system with up to four planets, choosing the star type at the center of the solar system, planet name, size, eccentricity of orbit and...