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在如今的小学课堂教学中,“问题情境—建立模型—解释与应用”的教学模式在很大范围内被推广和应用;其中,又以“建立模型”居于数学课堂的核心地位。数学建模是发展学生观察想象能力、合情推理能力、抽象概括能力、合作交流能力的过程,应当引起教师的关注;而在现实教学当中,却存在着建立模型过于仓促、轻过程重结果的现象,致使学生对数学知识核心本质的认识出现“夹生”现象,降低了课堂教学效率。笔者认为,引领学生建构数学模型要充分重视其有效性。
In today’s primary school classroom teaching, the teaching paradigm of “problem situation-establishment model-interpretation and application” is popularized and applied to a large extent. Among them, “model building” is at the core of the mathematics classroom . Mathematical modeling is the process of developing students’ ability of observing imagination, affective reasoning, abstractive summarization and cooperation and communication, which should arouse the attention of teachers. In reality teaching, however, there are some problems such as the establishment of models too hasty, Phenomenon, resulting in students’ understanding of the core essence of mathematical knowledge “folder students ” phenomenon, reducing the efficiency of classroom teaching. The author believes that leading students to construct mathematical models should give full attention to its effectiveness.