The document presents the Taskbar Model for the ANGEL Learning Management System. The model was designed to provide intuitive navigation for students and flexible course management for instructors. It addresses limitations in previous linear design models which required all content to be chunked into modules and led to confusing nested navigation. The Taskbar Model uses a table of contents and sidebar buttons for navigation between modules without nested content. It also allows activities to extend beyond single modules and overlap to enhance discussion. Instructors have flexibility to introduce assignments and accommodate student learning progress. The model navigates like a webpage for familiarity and eliminates nested content for easy access to resources, assignments, and communication with instructors and peers.