As part of our teacher training programs and evaluation protocols we have a focus on lesson reflection. We encourage and sometimes mandate that teachers reflect on a lesson after its completion. What worked? What didn't work? Did you have a clearly aligned objective and did you meet that objective? Did the students understand? How do you know ? What would you do differently next time? etc....
What we typically do not formalize is the collection of feedback from students regarding a lesson. We do evaluate and assess understanding through formative and summative assessment, but do we know how they truly felt about the delivery of a lesson? Do our students have insights that could improve the instructional delivery, method of assessment or expected outcomes? I am sure they do!
Blogging in the classroom and the development of student blogs provides students with a voice. It is an opportunity to publish their thoughts and ideas for an audience. We encourage students to take part in online discussions or possibly comment on a publication. How about asking student to provide feedback regarding a lesson? While they may require a framework regarding effective feedback, I would believe that what they provide a teacher may be as valuable as the results of the formative/summative assessment used to measure a lessons effectiveness.
Blogger, Kidblog, Edublogs or Moodle are all great classroom blogging options.