1. open-loop structure

For example, educators transmit information to the educated through the media without feedback, such as spoon-feeding and indoctrination teaching.

2. Closed loop structure

A teaching method with good feedback and high teaching interaction.

3. Two-step structure

Educators transmit information to the representatives of the educated, and then the representatives pass it on.

4. Cross structure

Educated people interact, discuss with each other or check homework, such as group cooperative learning.