Students learn mathematics through the experiences that teachers provide.
The improvement of mathematics education for all students requires effective mathematics teaching in all classrooms. Teaching mathematics well is a complex endeavor, and there are no easy recipes for helping all students learn or for helping all teachers become effective. Nevertheless, much is known about effective mathematics teaching, and this knowledge should guide professional judgment and activity. To be effective, teachers must know and understand deeply the mathematics they are teaching and be able to draw on that knowledge with flexibility in their teaching tasks. In addition, effective teaching requires reflection and continual efforts to seek improvement.