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学生解决实际问题的能力,反映了他们当前的数学思维水平和数学学习力。现行各版本的小学数学教材非常注重再现生活中的真实场景,以激发学生的学习兴趣,吸引学生主动探究问题。然而,教材中解决问题的呈现内容有诸多干扰因素,缺乏经验的学生极易受到这些因素的困扰,难以解决问题甚至错误判断。帮助学生正确分析问题、理清数量关系、有效解决问题,是促进学生数学思维发展的重要途径。一、实际问题解决中数量干扰的因素
Students’ ability to solve practical problems reflects their current level of math thinking and math learning. Current versions of primary school mathematics textbooks focus on reproducing the real scenes in life to stimulate students’ interest in learning and attract students to take the initiative to explore the issue. However, there are many disturbing factors in the presentation of the problem-solving materials in the textbooks. The inexperienced students are easily disturbed by these factors, and it is difficult to solve the problems or even make false judgments. To help students correctly analyze the problem, clarify the relationship between quantity and effectively solve the problem is an important way to promote the development of students’ mathematical thinking. First, the actual problem-solving factors in the number of interference