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Study materials are the resources you share with your students — lecture notes, slides, past questions, videos, and any other files they need for learning. Materials are organized in folders within each course.
Before you begin: You need an existing course. See Creating a Course.

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Creating folders

Organize your materials into folders so students can find what they need easily.
1

Open your course

Navigate to the course and go to the Study Materials section. You’ll see any existing folders and files listed here.
2

Tap 'Create Folder'

Enter a folder name (e.g., “Week 1 - Introduction”, “Past Questions”, “Lab Resources”).
Create folder dialog with a text field for entering the folder nameCreate folder dialog with a text field for entering the folder name

Screenshot: Create folder dialog with name field

3

Create nested folders (optional)

You can create folders inside folders. Open an existing folder, then tap Create Folder again to create a subfolder. The new folder appears inside the parent folder.
Example folder structure:
Use clear, consistent naming for folders (e.g., “Week 1”, “Week 2” or “Module 1”, “Module 2”) so students can follow along with the course progression.

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Uploading files

1

Open the target folder

Navigate to the folder where you want to upload the file.
2

Tap 'Upload' or the upload icon

Select the file from your device.
File upload interface showing drag-and-drop area and file selection from deviceFile upload interface showing drag-and-drop area and file selection from device

Screenshot: File upload interface showing file selection

3

Add a title (optional)

You can give the file a descriptive title that’s different from the filename.
4

Upload

The file is uploaded and stored on Lena’s cloud storage. Students can view and download it immediately.

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Supported file types

You can upload a wide range of file types:
  • Documents: PDF, Word (.docx), PowerPoint (.pptx), Excel (.xlsx)
  • Images: PNG, JPG, GIF
  • Videos: MP4, AVI, MOV
  • Audio: MP3, WAV
  • Other: ZIP archives and other common file types
Large files (especially videos) may take longer to upload depending on your internet speed. Make sure you have a stable connection before uploading large files.

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Managing materials

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Renaming

To rename a file or folder, find the item and look for the edit or rename option (usually accessible through a menu icon or long-press).

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Deleting

To remove a file or folder:
  1. Find the item you want to delete
  2. Tap the delete option
  3. Confirm the deletion
Deleting a folder deletes all files and subfolders inside it. This action cannot be undone.

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How students see materials

Students see the same folder structure you create. They can:
  • Browse through folders
  • Tap files to view them in Lena’s built-in viewer
  • Download files to their device
For the student perspective, see Study Materials (Student).

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Troubleshooting

  • Check your internet connection — large files need a stable connection - Try a smaller file or a different file format - Supported formats include PDF, DOCX, images, and most common document types
  • Make sure the course is published (not in draft) - Verify that the students are enrolled in the correct course - Ask students to refresh the page or check their internet connection