This project is a design for a visual interface to an onscreen version of a Calculus I course (differential calculus). The interface is built in Flash and is designed to work with Flash-based content materials. A few basic assumptions about the course need to be made:

• The course is completely onscreen, i.e. there is no separate text and no teacher. All content materials and all assessments are onscreen.
• The course is student-directed and student-paced. All assessments are formative and repeatable; any summative assessments are conducted outside the course.

The goals of this interface are the following:

• to make the organizational structure of the course as visually clear and understandable as possible, both overall and in detail
• to allow quick and easy visual navigation to all course materials, both content and assessments
• to provide the student with detailed visual feedback on his progress, specifically on which material he has covered and his assessment results for that material.

A few caveats before proceeding.

• The organizational details of a course like this one can be complicated and varied. The interface presented here does not specify every last detail, but deals mainly with providing a visual representation of the more important aspects of the course.
• The actual interface is implemented only in a very restricted, "hacked" model (in the Navigation section). In any discrepancies between the model and the textual description, the latter takes precedence.