积件是在课件基础上发展起来的新一代教学软件系统和教学媒体理论。积件系统的建构体现为资源与系统、系统与需要间的整合。积件系统的应用不同于一般性程序操作 ,需要上升到策略层面 ,即要充分地利用其生成性与交互性 ,注重潜在功能的开发 ,增强评价的激励性与形成性 ,以促进教学的整体优化。 Product is a new generation of teaching software system and teaching media theory developed on the basis of courseware. The construction of the piece system reflects the integration of resources and systems, systems and needs. The application of the integral system is different from the general program operation, which needs to rise to the strategic level, that is to make full use of its generative and interactivity, pay attention to the development of potential functions, enhance the incentive and formativeness of evaluation, so as to promote the teaching as a whole optimization.