This activity is used after a lesson on writing equations of parallel/perpendicular lines. Students go around the room and trade papers with their classmates. They each work a problem on the other person’s paper then trade back. Problems must be worked in order from #1-12 so one student cannot just work the same problem over and over again. The best thing about this activity is the opportunity for students to get out of their seat and move around the classroom. Students must sign the box in which they complete the problem. This helps the teacher know who is getting them right and who is getting them wrong when the papers are graded. ANSWER KEY INCLUDED!!
Need more resources on lines/parallel/perpendicular? Check out:
Link-Converting Standard Form Linear Eq into Slope-Int Form: People Search Activity
Link-Writing Equations of Lines (including Parallel/Perp.) Mascot Activity