Create 10 practical guides for designing microlearning units that make learning short, concise, and motivating.

Context: [Continuing education, e-learning, professional qualification, digital learning formats]

Goal: [Promote concentration, convey knowledge quickly, enable flexible learning times]

For each guide describe:
1) The structure and duration of the microlearning unit
2) The didactic method or activity (e.g. quiz, video, interactive task)
3) Tips for design and integration into learning platforms or everyday work

The units should:
- be easy to understand and quickly consumable
- address different learning types
- increase motivation and retention
- integrate well into existing learning processes