学生的学习效率与其思维能力的强弱相关联。每个学生都有发展思维能力的潜力，但是，如果只重视死记硬背书本知识，忽视让学生开动脑筋、自己思考问题和解决问题的训练，将会压抑学生思维能力的发挥和发展。因此，在教学中，科学地创设问题，不但可以培养和激发学生的认识兴趣? The learning efficiency of students correlates with the strength of their thinking ability. Each student has the potential to develop his thinking ability. However, if he focuses only on the rote learning materials of the Rare, neglecting the training that enables the students to use their brains, their own thinking and problem solving, it will depress the development and exertion of the students' thinking ability. Therefore, in teaching, creating problems scientifically can not only cultivate and stimulate students' interest in understanding?