Lesson An introductory lesson to the concept of slope.
Lesson An introductory lesson to the concept of parallel and perpendicular lines
Assignment B11 A written assignment on determining the slope of a line algebraically or graphically.
Assignment 2 - B11 A written assignment on determining the missing value given the slope of a line or point on the line
Assignment B12 A written assignment on determining the slope of special lines (horizontal, vertical, parallel and perpendicular)
Linear Function Machine This activity includes a user's guide and interactive questions to develop the concept of how a linear function is created from two points.
Investigation The purpose of this investigation is to discover relationship between equations in the form of y = mx + b and their graphs by creating the graphs and analyzing a pattern.
Interactive Exploration This activity allows the user to use various controls to manipulate a linear function graphically. The activity includes a lesson plan, exploration questions and an interactive applet.
Parallel Activities A set of ten different assignments to distribute to a class to work on in pairs or individually to determine the slope given two points
Complete Lesson In this lesson, students interpret the meaning of the slope and y-intercept of the graph of real-life data. By examining the graphical representation of the data, students relate the slope and y-intercept of the least squares regression line to the real-life data.
Negative Slope

This lesson is designed so students examine real-life data that illustrates a negative slope. Students interpret the meaning of the negative slope and y-intercept of the graph of the real-life data.

Alternately, go here and search for "negative slope"

Real World Complete student package on discovery of the significance of slope in real world situations. Includes scatterplots on graphing age of vehicles compared to mileage.