Lessons is a tool that allows an instructor to organize resources, activities, and media on a single page. You can have as many Lessons pages in your site as needed. Each Lessons page can be customized to suit the needs of the lesson, including links to other site tools, conditional release of items and content, student content pages, LTI tools, and more.
Instructors can organize the course by unit, module, week, topic, or any other grouping that makes sense for the site.
The Lessons tool allows many of the Sakai tools to be integrated into a single page and there are many appealing features:
Multiple instances (left navigation items) of the tool can be created