his paper relates the life story of a particular educational resource (and its lead author) that went from being closed to open and which exemplifies the value of reuse and reworking of educational resources in both arenas. It describes how the educational resource was itself a reworking of previous resources and has now been reworked and reused in a number of other settings, both closed and open. It also shows the amplification and networking effects of open educational resources. (Abstract by author)