Micro-learning is focused on smaller learning units that are delivered within a short time frame. Usually, each micro-learning unit will have a single objective (or ‘learning outcome’), and it is advisable to make this objective clear to the learner(s) prior to delivering the unit to facilitate their ability to reflect on and celebrate their educational achievements.
https://www.theedadvocate.org/use-micro-learning-higher-education-classrooms/