Before you use blogs, you will need to spend a little time teaching students how to set them up. I recommend using a computer lab with an LCD projector set-up, so you can demonstrate how to sign up for and create a blog and have your students work together to build their blogs as they go.
Decide which format you will use for your classroom blogs. You should have all students use the same blog creation site, to avoid confusion. This way, you can show them how to create their blogs all at one time, and they will all do it the same way. Also, if a new student joins your class late in the year, you can create a “how-to” document to guide them through the process individually.
Show your students the web site and have them work with you, step by step, to create a blog. You may even want to use one student in each class for a “guinea pig,” and have them create their blog on the projector screen as the rest of the class follows along on individual computers. Allow students to choose their own blog title, URL, and background decorations; but provide guidance so that they know you expect their blogs to be entirely school-appropriate.
When you finish your demonstration and all students have created a blog, you can pass around a sheet of paper and have them write down their blog’s URLs for you so you will be ready to grade, when the time comes. You may need to repeat this process using the projector when students are ready to create their first blog post, as they may be unfamiliar with the process of doing that.
If you have never used a blog before, you should practice by setting up your own blog before you try to teach your students. Experiment with trial and error and use the FAQs or helpful hints from your blog creation web site to help you. The best part about this is that now you will have a blog for your classroom! Use it to post homework assignments, link to web sites of interest, and assign extra credit. It would be especially useful to use your own blog to post the assignments you want your students to create on their blogs. If you want to see an example, feel free to browse my classroom blog here. I set it up in a few minutes, and I have found it to be very useful.