“读书无疑者,须教有疑,有疑者,却要无疑,到这里方是进步.”因此,让学生在“提出问题—分析问题—解决问题”的数学活动中培养数学的思想与方法,促进数学智能和数学素养的全面提升,才是回归自然、绿色、原生态的教学课堂. “There is no doubt that doubts and doubters must be taught in reading, but there is no doubt that there is no doubt here that progress is made.” Therefore, students should be allowed to develop mathematics in the mathematical activities of “asking questions - analyzing problems - solving problems” Ideas and methods to promote the overall improvement of mathematical intelligence and mathematical qualifications, is the return to nature, green, the original ecological teaching class.