SWBAT solve linear systems of equations using elimination, Day 2.

If we don't have additive inverses, what should we do? Rather than "change the signs," push kids to understand that you are multiplying an equation by -1.

10 minutes

Today, students complete WU67 Elimination 2 as a warm-up that reviews the previous day's material. Warm-up problems also sometimes extend lessons that students have encountered before to more unfamiliar contexts.

For a video narrative about how I structure each lesson, and how the warm-up fits in, click here.

40 minutes

10 minutes

15 minutes

5 - 8 HW67 Elimination 2 includes 7 problems that consist of problems related to this lesson, as well as spiraled review. I also give the kids the answers to the problems.