Keroro the Sergeant Frog Character Workbook Series is designed to help children learn about the basics of Korean, English, and numbers as
they read through stories of their favorite characters.
Young readers can learn and have fun at the same time, as they trace words,
search the labyrinth, find pieces for puzzles, connect dots and lines, and color.
Each volume in this series has two sheets of stickers, so that children can review what they have learned from the stories as they play with the stickers.