We've briefly discussed this in class a couple of times, but here's a more extensive breakdown of how I determine blog and participation grades:

Blog grade:

A: To earn an A on the blog component of the course all assignments must have been completed and comments posted by the assigned deadline. Comments are thoughtful, fully answer the question asked, and, if specified, take into account the comments of other students.

B: All assignments completed, mostly on time. Thoughtful comments, though perhaps briefer and less engaging than those that merit an A.

C: Most assignments completed, primarily at the end of the semester and/or comments are short, perfunctory answers to the blog prompt with little consideration of the comments of others.

D: Only partial completion of the assignments and comments show little commitment to making a contribution to the discussion.

F: Failure to complete more than 50% of the assigned blog questions.

Participation grade:

A: Nearly 100% attendance, unless due to illness or family emergency AND active participation in class. Clearly on top of the reading and regularly speaks in class. Always engaged in the discussion, whether vocally contributing or not.

B: Missed very few classes (2 or 3 max), unless due to illness or family emergency. Participated in class vocally on a fairly regular basis, but, more importantly, is always listening and attentive to the ongoing discussion. Unprepared for class occasionally, but usually caught up on the reading and willing to contribute.

C: Misses more than three classes for reasons other than illness or family emergency. Clearly behind in the reading on at least several occasions. Mostly attentive and speaks in class several times over the course of the semester. Makes a good effort to stay involved in class discussion and appears interested.

D: Regularly missing from class and/or frequently appears disinterested. Routinely behind on reading and fails to bring books to class. Leaves class from time to time to take phone calls thinking that the professor thinks they are using the bathroom, continually passes notes back and forth with someone else, works on other homework, reads the newspaper during class, checks e-mail or text messages while instructor or classmates are speaking, all of which, I should add, are apparent to the instructor and your classmates and immediately qualify you for a D.

F: Attendance and participation not worthy of a D or higher. Failure to attend most classes and/or to participate in any meaningful way.