People commonly use technology in their daily lives. Within an increasingly complex society, individuals, organizations and other entities continue to look for new technologies that support their goals. Since the 1990s, there has been movement toward mobile wireless technology in education. Like the wired technology that came before, mobile wireless technology was initially used in business sectors, to improve efficiency and effectiveness in production. However, learners and educators are now using this emerging technology to increase efficiency and effectiveness in the classroom. With such consistent interest in mobile wireless technology in K-12 education, it is crucial for teachers, administrators and students to have a clear understanding of the types and uses of mobile wireless technology. Therefore, this paper is divided into two sections: (1) an overview of mobile wireless technology, and (2) a description of teacher and student uses of two specific mobile wireless technologies in K-12 classrooms. The overview section includes technological concepts, trends and funding associated with mobile wireless technology. The second section introduces how students and teachers use PDAs and mobile wireless phones in K-12 classrooms.(Contains 6 tables and 5 figures.)