美国数学家哈尔莫斯曾说过:“数学是思维的体操,问题是数学的心脏。”数学之所以成为锻炼思维的体操,是因为数学发展始终不断地在提出问题、解决问题。问题是教学的出发点,也是思维的起点。在教学过程中创设问题情境,实际就是通过激发学生的思维,将数学问题转移到创设的情境中加以解决。因此,在教学过程中,教师可根据学生的实际,合理地创设问题情境,从而点燃他们思维的火花,激发他们的求知欲望,为他们解决问题搭建平台,引导他们登上知识的殿堂。一、创设质疑式的问题情境,点燃学生思维的火花在学习过程中,学生的直观表象与客观事实的矛盾,以及已 Harmatus, an American mathematician, once said: “Mathematics is the gymnastics of thinking, and the problem is the heart of mathematics.” The reason why mathematics has become a gymnastic exercise is that mathematical development is constantly asking and solving problems. The problem is the starting point of teaching, but also the starting point of thinking. In the teaching process to create a problem situation, in fact, is to stimulate students’ thinking, the mathematical problems will be transferred to the creation of the situation to be addressed. Therefore, during the teaching process, teachers can reasonably create problem situations according to the students’ actual conditions, ignite the sparks of their thinking, inspire their desire for knowledge, build platforms for them to solve problems and guide them onto the temple of knowledge. First, to create a question-based problem situation, ignite the spark of student thinking in the learning process, the student’s visual appearance and objective facts of the contradiction, and