In their new book Opening Up Education: The Collective Advancement of Education through Open Technology, Open Content, and Open Knowledge (MIT Press, 2008), editors Toru Iiyoshi and M.S. Vijay Kumar bring together a diverse group of scholars of teaching and learning to address this question:  “How can open educational tools, resources and knowledge of practice improve the quality of education?” That is, how can educators take advantage of new knowledge-sharing tools in order to make their own learning visible, enhancing the collective understanding of how best to use these same tools in the classroom? By bringing together excerpts from the book’s diverse group of contributors, this article presents a snapshot of open education that sits at the intersection of innovation and the imperative for an expanding knowledge base on teaching and learning.