《小学数学课程标准》指出:要通过直观教学和实际操作,引导学生在感性材料的基础上理解数学概念,进行简单的判断、推理,掌握数学最基础的知识,逐步发展初步的逻辑思维。“操作”不仅包括手操、口述、眼观等外部活动,还包括学生动脑思维的内部活动。但最终目的在于帮助学生在活动中展开思维,概括规律,形成技能。 The Primary Mathematics Curriculum Standard states: Through intuitive teaching and practical operation, students should be guided to understand mathematical concepts on the basis of perceptual materials, to make simple judgments, reasoning, master the most basic knowledge of mathematics and gradually develop preliminary logical thinking. “Operation ” includes not only external activities such as handwriting, speaking and eye observation, but also internal activities of students thinking and thinking. However, the ultimate goal is to help students develop thinking in activities, summarizing the law and forming skills.