Card Sorts are a fun and challenging way to pick out features of equations. The Quadratic Functions Card sort includes concepts of concavity, vertices, x and y intercepts, stretch and shrink, as well as the three forms, standard, vertex, and intercept. An Answer Key is included, along with a blank page for students to record their work. To use the card sort, print the pdf. Find the four card pages and print as many copies as you need for groups in your class. I usually print on card stock, using