What if kids could learn a simple trick to understand how money grows? The Rule of 72 introduces young readers to one of the easiest and most exciting ideas in money: how long it can take for money to double. Written in a fun, age-appropriate way, this book helps children understand the power of time, growth, and smart financial habits. With simple explanations and kid-friendly examples, readers will discover how saving early and being patient can make a big difference over time. This book turns a big money concept into something easy to understand, memorable, and fun. Perfect for elementary-aged readers, parents, and teachers, The Rule of 72 is a great introduction to financial literacy for kids.