DORAGI Training method - How to train new apprentices 

D ‒ Demonstrate
Perform the task in front of the employee from start to finish. Be sure to work slowly and explain everything you do as you're doing it, allowing the employee both a visual and an auditory aid for understanding the procedure.
O ‒ Observe
Watch as the employee attempts to perform the task that you've demonstrated. Take notes if needed, but try not to interject or intervene. Give them time to work through it, even if they make some mistakes.
R ‒ Re-Demonstrate
Carry out the entire task once more, this time highlighting the portions that the employee could have done differently. Don't forget to praise them for the things they did well ("I like what you did with x ‒ remember to also y").
A ‒ Assign a Task
Provide the employee with a specific task to complete. This assignment should take a relatively small amount of time ‒ about an hour or less ‒ and should give the employee a chance to try out what they've learned in the work environment.
G ‒ Goal Set
Set a time frame in which the task or tasks should be performed. This gives the employee an idea of how long the process typically takes and helps them to stay on-track.
I ‒ Inspect
Check and evaluate the employee's work. Re-demonstrate if necessary, then assign a new task, set a new goal, and re-inspect. You've got the steps ‒ now it's time to put them into practice. What does DORAGI look like in a real-life situation? Let's use this method to detail how you might teach a new employee the proper way to paint a wall.