J Coffman
Joseph Coffman's Lecture Notes: Absolute Value Functions and Graphs
Students learn about absolute value functions. The learning exercise consists of examples and an assessment on how to graph absolute value functions.
Cut the Knot
Cut the Knot: The Floor Function
This site explains the floor function [x] notation (also known as the greatest integer function). The site contains several examples and graphs to help understand the concept. There is also an advanced exercise using the floor function...