We forget how long it took us to learn things. They usually got that expertise through trial and error. But they try to teach it through telling. In other words, they use declarative methods to teach procedural knowledge. Afterward, they expect trainees to perform the task, and they become frustrated when it doesn't work that way.
Real training is a two-way street.
It helps the trainee process and practice new skills, rather than simply dumping information on him. By actively engaging the trainee's participation, real training converts lifeless information into meaningful knowledge. The employee understands why the new knowledge is relevant and has a clear idea of how to apply it. Employees need to understand what's in it for them. Demonstrate how the new knowledge or skill will solve a problem or make them better, faster, and more effective in their jobs.