This was in use in the classroom I observed during Winter Quarter. It was an excellent tool for the teacher to use, not only to post grades, but to offer kids study guides, etc., that they could access from home. They could also log on from home to complete lessons, etc. And, best of all, it is FREE. With school's on such tight budgets, free products are excelent!

This is sort of like a "learning" Second Life. Here's a little blurb about the "River City Project": As visitors to River City, students travel back in time, bringing their 21st century skills and technology to address 19th century problems. Based on authentic historical, sociological, and geographical conditions, River City is a town besieged with health problems. Students work together in small research teams to help the town understand why residents are becoming ill. Students use technology to keep track of clues that hint at causes of illnesses, form and test hypotheses, develop controlled experiments to test their hypotheses, and make recommendations based on the data they collect, all in an online environment. Isn't this a great tool for higher order thinking?

While I have never twittered, I think it is important to use the technology that students are already using to incorporate technology into the classroom. For me, this is a "whole package" approach, so learning (celebrating an author's birthday, etc.) just becomes part of a daily Twitter routine, instead of something done inside the classroom only.