involves showing trainees the right way to do things, having trainees practice, then you providing feedback to the trainees.

The correct answer is Behavior modeling

The behavioral modeling presents itself as the culmination of organizational psychology in administrative theory and in the search for democratic solutions to organizational problems. The behavioral theory defended the valorization of the collaborator in any business level, looking for a standard in the administration and in the administrative researches as a whole. Still, it is known that the studies about the behavior maintained the emphasis of the school of human relations, which possessed the people as the main focus, however, within a more organizational context. It is known that Behavioral Theory has been influenced by several other sciences, such as sociology, anthropology and psychology. She also added and adapted several concepts contained in these areas for business administration, providing a broad view of people's behavior in the workplace. In general, it aimed at redefining administrative concepts by criticizing previous theories (Classical and Human).

Yes, it does.

At first, i thought that math is useless and a waste of time because it is too hard to understand and have no application in real life.
But then, i realized that almost all occupations that exist today require  at least a little amount of math in it's operation (even for artistic jobs, math is often used to determine correct measurement of an artwork)