Appreciation can make a day—even change a life. Your willingness to put it into words is all that is necessary. (Margaret Cousins, early 20th century political activist)
It’s easy to criticize, to make judgments, and correct others in their errors. That might be of some help in the educational process, but how much better it is to motivate a learner with words of encouragement and appreciation.
A word fitly spoken is like apples of gold in pictures of silver. (Proverbs 25:11)