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The document discusses changes in education from traditional teacher-centered models to student-centered e-learning models. It defines e-learning as using electronic media like the internet, videos, and CD-ROMs to deliver course materials and enable interaction between students and teachers. Effective e-learning methods focus on clear instruction, opportunities for interaction, and evaluation criteria. Blended learning combines distance learning technologies with traditional classroom activities. While e-learning saves time and costs, it requires more effort to prepare materials and keep students motivated.