5 different 12 card sorts for determining if lines are Parallel, Perpendicular or Neither. Students first find the slopes of 2 lines then to determine if the lines are parallel, perpendicular or neither.
1 set uses points
1 set uses graphs of lines
1 set uses linear equations in slope intercept form
1 set uses linear equations in any form
1 set uses all 3 types
Can be used for differentiated instruction based on students abilities.
Includes: 5 sorts, 3 word walls/poster, 2 students answer sheets and answer keys