Looking for an engaging way to reinforce the difference between functions and non-functions? This hands-on Function or Not a Function Card Sort gives students meaningful practice using multiple representations: mapping diagrams, ordered pairs, tables, graphs, and equations. With 30 cards, sorting mats, a recording sheet, and easy-to-use answer keys, this low-prep activity is perfect for review, math centers, or sub plans. Learning Objectives:By the end of this activity, students will be a