Teaching Arithmetic to the Adolescent: A Montessori Approach This is the ideal resource for math educators aiming to teach arithmetic to adolescents using the Montessori methodology. The book encompasses a broad range of topics, from fractions, decimals, and percentages to additional arithmetic skills, probability, combinatorics, statistics, set theory, and number theory. With this book, educators will have access to the essential lessons tailored to the adolescent, assisting them in achieving success.