The advantages are convenient use, ability to train many people at the same time, economy and high efficiency; It is beneficial for students to systematically accept new knowledge; Easy to master and control the learning progress; It is conducive to deepening the understanding of difficult content.
The learning effect of shortcomings is easily influenced by the teaching level of trainers; Because it is mainly one-way information transmission, there is a lack of necessary communication and feedback between teachers and students, and the knowledge learned is not easy to consolidate, so it is mostly used for the training of some conceptual knowledge.