大多数通信教材都概括地绍了有关概率的背景知识。
Most books on communications include a summary of the necessary background in probability.
第二部分是概括教材研发时所做的理论背景分析，包括教育硕士的学习分析以及相关的教学理论分析，以为教材的设计和开发做好思想准备。
The second part analyzes the theoretical background in the process of researching and exploring the teaching materials, which contains theories about education master and teaching material design.
结合教学实践对体育教材的概念、特性、分类方法进行理论分析和概括，阐述了如何认识教材的本质属性及树立教材观的问题。
The article analyzes and summarizes the concept, character and classification methods of PE teaching materials combined with practical teaching.
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