The tutor who makes you feel smart gets more out of you than the one who shows off.

Teaching is not a demonstration of what the teacher knows. Somebody who performs their own ability mostly makes the other person feel further behind, which makes them less willing to try and less honest about what they do not understand. Feeling capable is what makes anybody attempt the next problem. A good explanation leaves the learner feeling clever rather than impressed.

When you help somebody this week, explain less and ask more, and let them get there. Say when their reasoning was good, specifically. Hold back the elegant method until they have solved it their own way.