Solving systems of equations underpins much of advanced algebra, especially linear algebra. Developing an intuition for the kinds and descriptions of solutions is key for success in those later courses. This intuition is exactly what...

How can you solve systems of linear equations? This slideshow introduces learners to the substitution method, the elimination method using addition and subtraction, and the elimination method using multiplication. Guided practice...

A fabulous presentation/activity based on geography. The author has designed a "baseball game" where batters advance to the next base if they correctly answer a multiple choice question about geography. Geographic terms are used, along...