Before a lesson: Questions are a way to motivate, set goals, stimulate thinking, convey purpose, and create a positive learning environment.
During a lesson: Questions inspire thinking and reflection, allow students to review what they're learning, involve students in evaluating their understanding of implicit and explicit learning, and encourage students to think ahead – to predict, anticipate, problem solve, and identify trends and patterns.
After a lesson: Questions prompt students to summarize what they learned, make analogies, reflect, draw conclusions, incorporate new learning with prior learning, and extend learning.