A blog provides a place for you to record your observations and insights about your current interests and experiences. Since your posts may be read ("followed" by other professionals in your discipline AND your students), consider how you might engage these audiences while also using writing in order to learn something new about yourself and your interests. Let your posts begin . . . .
Where are you involved professionally? For example, have you recently attended a workshop or presentation where the speaker said something that really caught your attention? What did he/she say (or what did you do or learn) that impacted your teaching, research, perspective, etc.? Are you trying something new with your courses this semester? What exactly are you doing? Why are you motivated to do this? How are you applying this new strategy? What conclusions are you drawing about how this new approach is working? Have you discovered something new or interesting from your mentoring experiences? What conversations in your discipline are getting your attention?
You may also want to use your blog to engage your students beyond classroom instruction. For example, are there particular topics or questions that need further explanation? Your posts could provide additional instruction regarding course topics, reviews, or responses to Frequently Asked Questions from your students. Blog sites also allow for readers to leave comments or questions, so your blog then becomes an additional means by which to engage with your students.
What most interests you outside of the classroom? Writing about these interests demonstrates that you personally value the benefits of reflection to your own lifelong learning. Therefore, why limit your posts to professional and instructional topics? What additional interests do you have beyond your discipline? Where are you involved in the community? Where have you travelled and whom did you meet?
You can start blogging by dedicating a page in your ePortfolio for blogging or link (or embed from Drive) a page from another site.