Can children with intellectual disabilities learn mathematics? Is it worth including this discipline in their education? What benefits can they gain from it? What is the best teaching approach? This book provides open, optimistic, and effective answers to all these questions that teachers and parents may ask themselves when educating a child with delays in language, comprehension, and interaction with their environment. Moving beyond an approach focused on learning disorders and the limited goal of achieving some simple uses of numbers, it shows how to put the potential of mathematics into action in the development and maturation of every human being.