Curated OER
Calculus 2.1 day 2 - Step Functions
"Step functions" are sometimes used to describe real-life situations. This extensive lesson with many practice examples demonstrates two such functions: the Greatest Integer Function and the Least Integer Function. The commands on the...
Wolfram Research
Wolfram Math World: Absolute Value
Defines the concept of absolute value in a variety of mathematical methods and difficulties. Includes special links for further investigation.
Math Words
Math Words: Step Function
This MathWords.com site describes a step function by offering the defining graphical characteristics.