Memory Game! Its just like the normal game of memory: all cards face down, randomly arranged. Students are in groups or teams (play with small groups or as a whole class) and flip over two cards. If the slopes are parallel, its a match! If the slopes are perpendicular, its a match!
Directions included. 32 pairs. PPT style doc, so changes can be made. (Depending on your ppt version, you may need to edit and make equations bigger).
Forms: just slope, an equation of a line, graphs, and tables. Great fun! Watch for typos and please leave feedback!