About the Author

Gakken is the number 1 educational publisher in Japan. Founded in 1946 by Hideto Furuoka, the mission of Gakken has always been to produce fun-first, educational materials for children.

Gakken is well-known to Asian families for its bestselling workbooks. Gakken is also well-respected in academic circles - publishing popular teaching materials for preschools, kindergartens, and primary schools. In addition to its substantial publishing business, Gakken also runs 18,000 learning centers called "Gakken Classrooms" and operates nursery schools - all inspired by the successful formula used in their workbooks.

Katerina Walls is an expert in the cognitive development of children. She received her training from Georgetown University, focusing on applied linguistics (how first, second, and third languages are acquired by young children) and developmental psychology. She has observed, consulted with, and facilitated the learning of children ages 0-12 years and their parents globally in research laboratories, developmental clinics, hospitals, classrooms, homes, and on Zoom. She has helped hundreds of children become the best version of themselves through one-to-one enrichment and coaching using her original method for motivating and engaging children to learn. She aspires to create resources that inspire children to become lifelong learners.