According to the National Institute of Education micro lessons are "IT-based instructional materials that are used to teach specific objectives." (Further details here.)
For me, the appeal of micro lessons is the potential to link them
closely to marking and feedback. We have reflection time in our school where students are expected to respond to marking and to make corrections in purple pen. Where I've identified a recurring error for a student, I can request they visit the relevant micro lesson for some independent study of the grammar or vocabulary point. In addition, for those students who feel a little insecure about a point micro lessons offer the chance to independently review and practise at home.
QR coding each micro lesson will probably be time well-spent so students can quickly access the lesson they need, especially if students are studying further in class via tablets for example.
I think they will be useful for homework also, especially where a large number of students in a class appear to be receiving the same feedback.
One example would be the number of times I have recently written
"Include connectives" during marking.
As a result of this, I have created a Connectives Micro Lesson which I intend to set for homework. There is a quizlet to practise a range of connectives and students will be asked to set themselves a target identifying at least 2 connectives that they will include in their next piece of work.
I've created a few Spanish Micro Lessons so far, based on the common errors from students. To help students master the content, I have added either a video, links to interactive exercises on great sites such as www.languagesonline.org.uk or created a quizlet.
I also now have a micro lesson stamper for marking books. Happy days!