> ## Documentation Index > Fetch the complete documentation index at: https://docs.uflo.io/llms.txt > Use this file to discover all available pages before exploring further. # How Uflo Works > Understand courses, chapters, lessons, and how to open and manage them. export const ItemBadge = ({item}) => { const style = ({ Course: ["graduation-cap", "purple"], Chapter: ["folder", "orange"], Lesson: ["note-sticky", "green"], File: ["file-lines", "blue"], Objective: ["bullseye", "yellow"] })[item]; return {item}; }; ## The Course Hierarchy Every Uflo course is built the same way, from the top down: * A **course** is one class you teach, such as Introduction to Biology. * A course holds **chapters**, which divide it into parts such as weeks or units. * A chapter holds **lessons**, which are what your students open. * A lesson is either a **Teach** lesson or a **Test** lesson. Tree of a Uflo course: Course, then Chapter, then Lesson. Lesson splits into Teach, with Files and Learning Objectives, and Test, with Questions and Submissions, which both lead to Response.

Tree of a Uflo course: Course, then Chapter, then Lesson. Lesson splits into Teach, with Files and Learning Objectives, and Test, with Questions and Submissions, which both lead to Response.

For help choosing how to divide your course, see [Plan Your Course](/instructors/getting-started/plan-your-course). ### Rename Chapters and Lessons Chapter and Lesson are default names. Rename them to match your syllabus, such as Module and Topic, when you [create the course](/instructors/courses/create-a-course) or later with **Update**. ### Teach and Test Lessons You can specify the type of lesson to create with the **TEACH** or **TEST** button at the top of the **Lessons** panel. From here on, these docs call a Test lesson an **assessment**. Lessons panel header with the TEACH and TEST buttons.

| Lesson | What it holds | What students do | | ------ | ----------------------------- | -------------------------------- | | Teach | Files and learning objectives | Study with Uflo's study tools. | | Test | Questions and settings | Answer the questions and submit. | ### Submissions and Responses Each time a student starts an assessment, Uflo creates a **submission** where students can provide their **responses** to each question. Upon submission, Uflo scores each response out of that question's points and sums the scores to get the submission's total. Two submissions on Cell structure quiz: Attempt 1 scored 7 out of 10, and Attempt 2 scored 9 out of 10, opened to show responses scored 4 of 4, 3 of 3, and 2 of 3.

Two submissions on Cell structure quiz: Attempt 1 scored 7 out of 10, and Attempt 2 scored 9 out of 10, opened to show responses scored 4 of 4, 3 of 3, and 2 of 3.

## Open and Manage Items Courses, chapters, lessons, and files all work the same way. Select an item to open it, and right-click it to manage it. Selecting an item opens the next level down: * A course opens its chapters. * A chapter shows its lessons in the **Lessons** panel. * A lesson shows its details: * A Teach lesson shows its files and learning objectives. * An assessment shows its settings and submissions. * A file opens its page, with its study tools, in a new browser tab. The manage menu opens in three ways: * Right-click the item. * Hover over the item and select its menu button (**⋯**) in the top-right corner. * On a touch screen, press and hold the item. The menu button stays visible there.

Chapters and Lessons panels with Cells and systems selected and the Cell structure lesson's menu open, listing Create, Update, Delete, Duplicate, Order, and Move.

### Menu Actions Each item's menu lists only the actions that apply to it. Delete can't be undone. Deleting a chapter also deletes its lessons and their files. You can't delete an assessment that has submissions, or the chapter that holds it. | Action | What it does | Available on | | ------------------- | --------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------- | | **Create** | Adds an item at the end of the list. | All items | | **Update** | Edits the item's details and settings. | All items | | **Delete** | Removes the item and everything in it. | All but | | **Duplicate** | Makes a copy without its submissions or exceptions. | | | **Order** | Drag to reorder. Select **Confirm Order**. | All but | | **Move** | Drag to a new spot. Select **Confirm Move**. | | | **Copy Link** | Copies a direct link to the file. | | | **Enrollments** | Shows the roster. See [Enroll Students](/instructors/courses/enroll-students). | | | **Download Grades** | Exports its grades. | | ## What Students See Students see the same **Chapters** and **Lessons** panels, without menus or create buttons. Each item's label tells you what students get: * **Visible:** students can open it. * **Visible from** or **Visible until**: students see it but can't open it outside the dates. * **Invisible:** students don't see it at all. The eye icon is crossed out whenever students can't open the item right now. An instructor's Lessons list beside a student's, which has no Teach or Test buttons. Lines link each lesson's visibility label to what students get: Cell structure and Cell structure quiz can be opened, Cell membranes opens Oct 12, and Membrane transport is hidden from students.

An instructor's Lessons list beside a student's, which has no Teach or Test buttons. Lines link each lesson's visibility label to what students get: Cell structure and Cell structure quiz can be opened, Cell membranes opens Oct 12, and Membrane transport is hidden from students.

[Manage Lessons](/instructors/courses/manage-lessons) shows how to hide lessons and set their dates. To see the course from a student's side, read [Navigate a Course](/students/getting-started/navigating-a-course). Decide how to divide your course into chapters and lessons.