The following learning progression is based on meeting the cluster on High School: Functions under ‘Understand the Concept of a Function and use Function Notation’ standard under the Interpreting Functions math domain. This cluster has been taken from the Common Core State Standards for Mathematics. The book where some of the activities or homework problems were taken from is called AGS Publishing: Algebra 2 by Siegfried Haenisch. The activities are focused on assuming this is a 10th grade class; however, this may vary.