Appropriate Content for Online Instruction

Final Project: Reflective Synthesis | EAC 539 Teaching in the Online Environment | Fall 2020

Old Media Images: photos, slide projection, illustations, maps, graphics ...

Lesson 3: Images

Instuctors of online material have a tremendous source of free visual content available on the web. Care must be exercised when using copyrighted images. Fair use copyright law is not always easy to apply. By always using your own work and free sources, you can avoid costly litigation.

Free Image-Based Content Sources

Look below the photo to learn about image formats and screen capture tools.

old media books

Pixels vs. Vectors

All images are based on two diffent types of technology, pixels and vectors. Pixels look bad if you zoom in very close and vectors look good no matter how deeply you zoom in. Photographs are created and delivered as pixels. Graphics can be created with pixels or vectors, but are almost always exported as pixels. The two most commonly used pixel based formats are .jpg and .png

Vector images on the web are rare. But they are should not; they are perfectly suited for the web as they have many, many benefits over pixel based images. SVG is a very amazing file format that uses xml text to describe images and has all of the benefits of vectors and text.

Here is a short youTube video explaining the differences between pixels and vectors.

Lesson 4: Audio