This learning progression will be taught in a high school sophomore algebra classroom. The common core standards that this learning progression aligns with are HSA.REI.C.5, HSA.REI.C.6, and HSA.REI.C.7. This progressi
on also makes use of the following three mathematical practices: MP1: Make sense of problems and persevere in solving them, MP3: Construct viable arguments and critique the reasoning of others, and MP4: Model with mathematics. The lessons in this progression will take students from a basic understanding of linear equations, to a complete understanding of systems of equations and how to solve them. Students will learn to solve systems of equations using three methods: graphing, substitution, and combination.