"The most powerful tool in coaching is the question - the Greek philosopher Socrates is regarded by some to have been the first coach. Among other things, he used deversified questions in his talks with his students. Here is how he did it.
Have students sort exit tickets on the way out the door by level of understanding (using green-yellow-red baskets). Visual way to check it they think they "got it". Students also are self-assessing their understanding.