Research into learning retention rates (National Training Laboratory Institute for Applied Behavioral Science from “Different Ways of Learning”) has proven:
| Teaching Method | Knowledge Retention |
| See/Hear – Lecture | 5% |
| Reading | 10% |
| Audio Visual / Video | 20% |
| Demonstration | 30% |
| Discussion Group | 50% |
| Practice by Doing | 75% |
| Teaching Others | 90% |
| Immediate application of learning in a real situation | 90% |
