Respond to 2 different students with one or more of the following:

1. A link that brings in new information or helps the student youre responding to
2. A substantial question (not, what do you think?)
3. A  politely worded critique that shows either a flaw in your classmates logic, misunderstanding of the data, or a failure to fully answer the questions
4. A politely worded reply to any of the above.