Additionally, the language used when praising student performance should be equally as descriptive. Rather than using words such as "good, " we should be able to describe WHAT they did well, WHY their response or perspective is valuable, HOW they might improve, etc. Simple descriptors make a world of difference in written communication. Instead of doing a "good" job, I would much rather use words such as insightful, interesting, or effective. The same goes for "negative" feedback. Also, in addition to comments, I LOVE using other visual forms of communication (underlining passages or words to look at, editing/grammar symbols, etc).