chanced upon this book published some 1 year ago, it contains a collection of more than 100 educational tools for Second Life. the book is released under creativecommons (CC), so you can download it, share it, and even improve on it (:
– a Singaporean teacher's storeroom 🖖 (愿消三障诸烦恼，愿得智慧真明了；普愿罪障悉消除，世世常行菩薩道)