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.
In fact weâve been teaching online for decades and I feel that much of the new software being developed by MOOC companies is facing the same issues that weâve been solving in other software for some time. Moodle (the Modular Object Oriented Dynamic Learning Environment) has been around for over ten years.