Description: Publisher's Note on the Revised Edition, Recommendation, Foreword, It's Alyssa's Birthday!, Museum Picnic, Boys and Girls, Dads and Moms, In Mom's Studio, Dad Came Home, Loving and Caring for One Another. Age- and Gender-Appropriate Sex Education, Customized for Your Child! Help instill biblical values about sex in your precious children! As various sex-related crimes have become a growing social issue, the need for sex education has become increasingly clear. In particular, in a social and cultural climate where even gender identity is being challenged, biblically grounded sex education is more important than ever. Yet many parents and teachers still feel uncomfortable and embarrassed, unsure of where or how to begin teaching this topic. While adults hesitate, there is real concern that children may be picking up incorrect information about sex through social media or friends. The 'Our Children's Biblical Sex Education Series' was created out of this very concern. A key feature of this series is that it is divided into four stages based on age, and further organized by gender, allowing for tailored sex education. Through this series, children can receive age- and gender-appropriate sex education rooted in biblical values—starting from early childhood, when children first begin noticing the differences between boys and girls, all the way through adolescence, when accurate and specific knowledge about sex becomes essential. While this series cannot cover every aspect of 'sex,' it offers clear guidance for biblically based sex education. We hope that parents and teachers will use this book as an opportunity to have honest, natural conversations about sex together with their children. About the Series: Our Children's Biblical Sex Education Series (Revised Edition). The Next Generation Research Institute, established with the support of Bundang Woori Church (Senior Pastor Lee Chan-su), was founded to help build families, churches, the next generation, their parents, and next-generation ministry workers on a foundation of biblical values. As part of its mission to support families, the institute identified and reviewed the 'Learning About Sex Series' published by Concordia Publishing House, a Christian publisher in the United States, and introduced it in Korea under the title 'Our Children's Biblical Sex Education Series' to help parents provide biblical sex education for their children. Watching today's children grow up far faster than parents expect, many Christian parents and teachers struggle with the question of 'when and how' to provide sex education. The 'Our Children's Biblical Sex Education Series' was created with these concerns in mind. Divided into four stages from early childhood through adolescence, the series presents what children at each age need to know, grounded in God's plan of creation. Another distinctive feature of this series is that the books are separated by gender—for boys and for girls—allowing for sex education tailored to both age and gender. This revised edition of the 'Our Children's Biblical Sex Education Series' retains the biblical values found in the original English text while adapting the language and staging to fit Korean sensibilities. It also includes guidance videos explaining 'Why Biblical Sex Education Matters' and 'Key Points for Each Stage,' helping readers make the most of the series. In addition, a companion workbook (sold separately) has been published to help families and churches carry out biblical sex education more effectively. We hope this series will have a positive influence in establishing a healthy culture around sex within the Korean church.