认知心理学将认知过程看成一个由信息的获得、编码、贮存、提取和使用等一系列连续的认知操作阶段组成的按一定程序进行信息加工的系统.但是在教学过程中有一种现象不容忽视,那就是教师精心设计,倾力实施的教学内容,由于某些环节缺少适度、合理的阶梯,缺少学生容易接受的基本信 Cognitive psychology regards cognitive process as a system of information processing which consists of a series of continuous cognitive operation stages of information acquisition, coding, storage, extraction and use, etc. However, in the process of teaching, there is a The phenomenon can not be neglected. That is, the teaching content that teachers have carefully designed and endeavored to implement. Due to lack of proper and reasonable steps in some links and lack of basic letters that students can easily accept