This volume shows how grassroots educational innovations and technology can be brought together in a fresh approach to human resource development in public social services. Based on a three-decade-long engagement with innovation in public education, this book provides an illustration of how teacher-driven innovations can be transformed into learning objects for technology-based professional development. It describes how innovations can be identified, screened and validated, and disseminated through two mechanisms-a clearinghouse-based approach and grassroots innovation "fairs." It then demonstrates how these innovations can form the backbone of a "third space," problem-based-learning curriculum, which can be delivered through a technology platform for large-scale professional development. The book offers guidance on practical ways of doing this, and on evaluating the curriculum's impact, with case studies of programmes that covered thousands of teachers. This book will be of interest to teachers, students and professionals in education, teacher education, digital education, information technology, communication and media studies. It will also be useful to educationists, policymakers, teacher educators, educational institutions, online education centres, and practitioners involved in professional development, education and training in developing countries.