I’m a private math tutor.

Whenever I explain something to my students, I ask them to explain it to me as if I didn’t understand. Then I play dumb, “understanding” what they are trying to say in the wrong way to help them refine their explanation. It helps a lot.

Also, I tell them to find other students in their classroom who don’t understand the concept well and to explain to them what my student already understood. I say: “The more you explain, the more you will understand.”