在常见金属元素的复习中,铁占有非常重要的地位,而其中不同价态铁元素之间的转化及其应用又是高考的一个重要考点。在高三复习这部分内容时,教师尝试整节课以问题为中心,通过问题激发学习动机,发挥学生主体作用,让学生在思考、交流、讨论、探究、解决问题的过程中实现知识的复习。一、设计问题,建构知识建构主义学习理论认为:“教学活动应该是在教师引导下的学生主动构建知识的过程。”布鲁纳的学科基本结构理论也认为:“不论我们选择教什么学 In the review of common metal elements, iron occupies a very important position, and among them, the conversion between different valence elements of iron and its application is another important test of the college entrance examination. In the third year of high school review of this part of the content, teachers try to focus on the entire lesson, motivate the learning motivation through the problem, give play to the main role of students, so that students in the process of thinking, exchanging, discussing, exploring and solving problems to achieve knowledge review. First, the design issues, the construction of knowledge Constructivism theory that: ”teaching activities should be under the guidance of teachers, students take the initiative to build knowledge process. “ Bruner’s basic structure of discipline theory also believes that ”Whether we choose to teach What school