Activities are where a course comes to life. They are the pieces a learner actually does: reading an article, watching a video, taking a quiz or turning in their work. String a few together and you have built a lesson that teaches and sticks. Rock gives you several activity types to mix and match. You can share a content article or a video, check understanding with an assessment, collect a file upload, ask for a simple acknowledgment or award points for participation. Each one does a different job, so you can shape the experience to fit what you are teaching. This section walks through every activity type one at a time. Start with the kind that fits your next lesson, then come back as you add variety to keep learners engaged.