一、让学生大胆质疑，培养创新精神 现代思维认为，问题是思维的起点一切发明创造都是从问题开始的，所谓“学贵有疑，小疑则小进，大疑则大进”就是这个道理。因此，教师在课堂教学中要鼓励学生大胆质疑，在解决问题的过程中培养学生的创新精神。 如，在教学《面积和面积单位 First, to enable students to boldly question and cultivate the spirit of innovation Modern thinking that the problem is the starting point for thinking All the inventions and innovations are from the beginning of the problem, the so-called “suspect your suspicions, small suspicion is small, big suspicion is big” is this reason. Therefore, teachers in classroom teaching to encourage students to boldly question, in the process of solving problems in the cultivation of students' innovative spirit. For example, in teaching "area and area units