应注重多媒体教材的优化组合与总体设计□张凤龙邹范林刘越一、目前电大教材存在的主要问题（一）文字主教材１．教材不适应学生自学。在这次评估的１９门课程中，师生反映便于自学的教材只有高等数学（下）、机械原理两门，占被评教材的１０．５％。这次被评估的教材，都... Should pay attention to the optimal combination of multimedia teaching materials and the overall design □ Zhang Fenglong Zou Fanlin Liu Yueyi, the main problems existing in the TV textbooks (a) the textbook 1. Teaching materials do not meet the students self-study. In the 19 courses evaluated in this assessment, teachers and students have found that there are only advanced math (lower) textbooks for self-study and two mechanical principles, accounting for 10.5% of the materials evaluated. The assessment of the textbooks, all ...