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. \n