"Artificial Intelligence Class 9 by Sumita Arora is an exceptional book that provides a comprehensive understanding of Artificial Intelligence for students in the 9th grade. The book is written in a lucid and easy-to-understand language, which makes it an ideal reference material for students who want to learn about AI. The book covers the fundamental concepts of AI, including neural networks, machine learning, and natural language processing. It also delves into the ethical and moral considerations surrounding AI, which is an essential aspect of AI that needs to be understood by every student. The book includes practical examples and case studies that enable students to understand how AI is used in real-life scenarios. The author has also included a wide range of exercises and problems at the end of each chapter to help students test their understanding of the topics covered."