Based on the classification of mathematical knowledge, this paper pointed out the characteristic of good mathematical cognitive structure and its instructional enlightment.
文章根据在数学知识分类的基础上提出的良好的数学认知结构所具备的特征，由此得出相应的教学启示。
Mathematics Cognitive Structure-having the ability of transferring mathematical knowledge, grasping the connection of knowledge;
数学认知结构——具有数学知识迁移能力，能够把握知识间的相互联系；
This paper presented a mathematical model with the main controlling parameters of the main points of knowledge, coefficient of difficulty and the structure of test question.
以考查点、难度系数和题型为主要控制参数建立了组卷问题的数学模型，并给出了用遗传算法解决组卷问题的新方法。
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