While it is possible to get worm densities up to as much as 20 kg/m 2 or 4 lbs per square foot (Edwards, 1999), the most common densities for vermicomposting are between 5 and 10 kg/m 2 (1 to 2 lbs per ft 2).
A massive open online course (MOOC) is a model for delivering learning content online to any person who wants to take a course, with no limit on attendance. A short video about MOOCs and the connected age. Recent Spotlight.
A very brief history of MOOCs. While MOOCs (or at least MOOC-like courses) have arguably been around for decades, Dave Cormier is credited with coining the term âMOOCâ to describe the Connectivism and Connective Knowledge course delivered by George Siemens and Stephen Downes in 2008.