One of the most important elements that is sometimes overlooked in the development of eLearning is the use of typography and fonts. Knowing your fonts is highly important in case of readability and consistancy of your your course.
I think that because of the above David Anderson challenged the Elearning Heroes Community to create an interaction that teaches one or more basic principles of typography.
My submission to this challenge is focused on the history of fonts and use of them in all kind of organization logos. So, if you want to know more about the history of fonts go check out this fun demo or download the source file for your own purposes.