Do you make your students use this method? My lesson went over like a fart in church today. My students are pretty confident with solving systems of equations in three variables. They hated using matrices and row operations. It didn't help that I have a few students that still count on their fingers. They were VERY vocal about their disapproval of the "new" method. I also made the mistake of telling them that Guass is from the 1800's. That just fueled their hatred and more jumped on the bandwagon of "Why are we learing this old stuff? It has nothing to do with my life now." I would normally chalk-it-up to a bad day, but this is the second time I've tried teaching this lesson and I've gotten the same reaction two year in a row. Is it me or the students? I'm thinking I will just let them use whatever methid they feel comfortable with. Monday we were going to go over Cramer's Rule, but now I'm not so sure.