My Algebra 2 students see equations of parallel and perpendicular lines in Geometry, but it always seems like they need a refresher at the beginning of the school year. In Geometry, I've used a discovery lesson and activity and I've also used foldables to teach the lesson. Since I loop with my kids, I wanted to do something different and not just re-use the same lesson.
I made a flipbook that reviewed the slopes of parallel and perpendicular lines and then had them practice writing equations. The problems in the flipbook were quick for us to work through because they had seen the material before. This flipbook is available in the exclusive content area of my Geometry Foldable Bundle and my Algebra Foldable Bundle.
Then, I gave them four practice problems to work on with their partners.
After this, my students felt very confident to start their homework. One day is all it took!