The students got onto the class blog and were instructed to read the latest post. I posted one grammar question at a time and they had to do the exercise/post the answers as comments as quickly as possible. I told students to post within 2 minutes and started noting who posted the correct answers first, and soon all the students were trying to be speedy and correct. I verbally told all the students whose answers were correct or if there were any problems by refreshing frequently and looking at the comments.
To post a new question, I simply edited my blog post, and students had to refresh their pages when I said, "OK, I've posted the next question!"
Students were really engaged!
The Application of the Activity to Other Classes/Content:
I think something similar, where students quickly post answers (and can't yet see other students' answers until they have posted and have refreshed the page) could work like a quiz on any content, could work for math formulas and problems, and could be a great way to give commentary on things like proverbs or argumentative issues.
I plan to use this again to have a type of quiz over the main concepts in the novel we have been reading ("Having Our Say: The Delany Sisters' First One Hundred Years").
The Speed Grammar blog post: