The Art of Problem Solving Beast Academy 2D Guide and Practice 2-Book Set by Jason Batterson is a comprehensive textbook set focusing on mathematics. Published in 2019 by Aops Incorporated, this trade paperback set includes the Beast Academy Guide 2D and offers a deep dive into problem-solving techniques in a fun and engaging way. With a focus on general math concepts, this guide is designed to help students master difficult problems and improve their problem-solving skills in English language.