The preface introduces the significance of Contextual Teaching and Learning (CTL) in transforming mathematics education. It discusses the importance of adapting teaching methods to reflect the ever-evolving needs of students in the 21st century. The preface highlights how traditional teaching methods often fail to engage students and how CTL provides a dynamic alternative. By connecting academic content to real-world situations, CTL enhances student motivation and deepens their understanding of mathematics. As a researcher and educator, the author shares their personal journey in exploring CTL and its potential to revolutionize the teaching of mathematics. The preface reflects on the successes and challenges encountered in adopting this approach and emphasizes the necessity of ongoing professional development for teachers.