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义务教育初中数学教学大纲明确指出：“数学教学中，发展思维能力是培养能力的核心”。这足以说明发展思维能力的重要性。思推按其指向可划分为定同思维、纵向思维和逆向思维等。逆向思维是思维的一个重要方面，它对于发展思维的灵活性、敏捷性和创造性，提高思维品质有着不和
The junior high school mathematics syllabus for compulsory education clearly stated: “In mathematics teaching, the development of thinking ability is the core of training ability.” This is enough to explain the importance of developing thinking skills. According to its direction, thoughts can be divided into fixed-minded thinking, longitudinal thinking and reverse thinking. Reverse thinking is an important aspect of thinking. It has a disagreement with the flexibility, agility, creativity, and quality of thinking in developing thinking.