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根据奥苏伯尔认知同化论的理论,分数、百分数三类应用题与旧知识(分数的意义、一个数乘以分数的意义等)建立下位联系。新知识可以被旧知识直接同化,或对旧知识作部分的改组,使原有知识得到扩展、加深、限制、修饰和精确化。所以在教学这部分知识时,沟通新旧知识之间的内在联系,是实现良好正迁移的有效途径。根据教学实践,我们总结出以下几种沟通联系的方法。
According to Ausuburn's cognition theory of assimilation theory, scores, percentages of three types of application questions and the old knowledge (the meaning of the score, a number multiplied by the meaning of the score, etc.) to establish the next contact. New knowledge can be directly assimilated by old knowledge, or partial reorganization of old knowledge so that the original knowledge can be expanded, deepened, restricted, modified and refined. Therefore, in teaching this part of the knowledge, the communication between the old knowledge and the new knowledge is an effective way to achieve positive migration. According to teaching practice, we summarize the following ways to communicate with each other.