TIM (The Interactive Material) is a general-purpose learning content management system for producing highly interactive and open digital learning materials. It is tailored to teachers, students, material developers, and other content creators alike as an all-encompassing, centralised platform for creating and hosting document-based materials. The system is open-source, MIT-licensed software actively maintained by the Faculty of Information Technology of the University of Jyväskylä. With more than 20 000 users in total since 2014, TIM has been actively used to host dozens of courses in universities and high schools.

The primary feature of TIM is the wide variety of tools consolidated in a single system to support distance and e-learning methods. In addition to traditional lecture-based courses, TIM has been used to successfully organise flipped classrooms, blended learning, primetime learning, and MOOCs. TIM has also been used as a system for the national IT entrance exams. The system includes various interactive components: multiple-choice questions, open-ended text tasks, drawing tasks, and automatically graded programming tasks are just a small sample of what is possible. All tasks can be graded automatically, or graded and annotated manually by teachers. The tasks can also be graded via anonymous peer review.

The core aspect of TIM is the document-based design. All pages are documents that consist of text and reusable interactive blocks. With user-programmable templates and custom styles, it is possible to create course areas, books, questionnaires, exams, discussion areas, live support pages and personalised learning analytics dashboards. TIM removes the need to jump from one learning system to another, reducing the cognitive load on students and teachers.