And having students create the content is always the right way to go. No matter what grade level. After all, you as the educator already have your formal education- you're making sure your students work through the process of completing their formal education. And what better way than to have them articulate, through a blog, that process because that is what you as an education do in formal education, you evaluate.
The questions you need to ask and answer are:
- Has your student engaged in the process of understanding the subject matter?
- Can they demonstrate that they have internalized this understanding and can apply it?
- If you ask them a question about the subject matter can they answer it?
Something to think about.