I agree with Rafael. The purpose of this group (at least since I have been a member) has been as an invaluable tool to share articles, research, and good reads regarding all aspects of education. It simply happens to be hosted in Diigo, hence the name. If this was not the intended purpose, might I suggest starting a different group for the Diigo-only bookmarks, as this group has morphed into a daily PD tool for many. Please do not remove any of the existing bookmarks! :)

53 ways to check for understanding, alternative assessment

Links and ideas on how to utilize QR codes in the classroom

A fun flowchart, for teachers and students, to keep up the reading during the summer and even the school year. Targeted to high school students, but advanced middle school readers could use it as well.

RubiStar is a free online tool to help teachers create quality rubrics. Users may create original rubrics, save and edit custom rubrics, or search the site for content specific rubrics submitted by other users. Site includes rubric templates for: Oral presentations, Multimedia, Math, Writing, Products, Reading, Art, Work Skills, Science, and Music.

A great perspective on vocabulary from a child's viewpoint. Something fun to keep in mind