学习的目的在于提高人类素质，这种提高首先表现为良好认知活动和情感活动的有效形成，而认知活动与情感活动事实上是以学习行为为基元的行为链。因此，可以认为，学习的核心是学习行为的变化，是学习行为的展开或压缩。学习行为是柔性的、弹性的，具有极大的伸缩性和可调节性 The purpose of learning is to improve the quality of human beings. The improvement first manifests itself in the effective formation of good cognitive activity and affective activity. Actually, cognitive activity and affective activity are behavioral chains based on learning behavior. Therefore, it can be considered that the core of learning is the change of learning behavior, which is the expansion or contraction of learning behavior. Learning behavior is flexible, flexible, with great flexibility and adjustability