Class round-ups are important not only to focus learner attention on information but also to help the process of remembering it.
Example
The learners have been practising techniques for a formal reading exam and at the end of the class each learner shares one useful tip with the group.
In the classroom
Class round-ups can also be done after the lesson in the form of e-mail, or on a class blog.
Further links:
https://www.teachingenglish.org.uk/article/learner-training-young-learners