To develop an effective e-learning course, several key elements must be considered:
1. Understanding the development process and resources required such as instructional design models, technology tools, and multimedia elements.
2. Course components like lessons and media can be reused to deliver content to different learners, though lesson plans may need modification for different teaching contexts.
3. The main characteristics of online activities are guidance through instructional design, good planning and design, and creation of structured reusable materials.