Here is a nice tutorial / source by Emanuel Feronato, with source available, explaining you how to create a cool matching game.
Tutorial | Create a matching game with Flash and AS3
About the Author: Carlos Pinho
A father, a husband and a geek... Carlos was the founder of projects like The Tech Labs and Flash Enabled Blog. He is the founder of TekTuts He is passionate about technologies. Their main skills are in analytics, transport & logistics, business administration. He also writes about programming resources, trends, strategy and web development.