Texas A&M University
Wtamu Virtual Math Lab: Beginning Algebra: Slope
A tutorial on slope with many step-by-step examples. The tutorial clarifies what slope is, how to find slope between two points on a graph, and how slopes of parallel and perpendicular lines are related.
Government of Alberta
Learn Alberta: Slope of a Line Segment
This interactive Java applet allows visualization of line segments and their slopes. The slope and how it is found is given for each line drawn by the user.