Now, here is a nice idea to keep the students focused on the learning objective! Connie Hamilton is writing about typical lessons when we have dozens of ‘teachable moments’ and it’s very tempting to go off on a tangent – but if we plan a series of questions to direct the students toward the learning objective, the learning becomes more effective. How do we do it? Turn the objective into a question, keep it consistent and keep it precisely worded. And ask this question again and again during the lesson.
P.S. I suppose it would be good to give students more time to think when you ask them a question like this (Hold that question); we can also encourage them to formulate the questions for themselves or their peers (The QFT Technique).