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Write notes on your work

You can use Classroom’s drawing and writing tools to draw and write on your assignments. You can underline words, highlight text, draw shapes, and leave notes. For example, you can highlight a sentence, color a map, sketch a plant cell, or show your work on a math problem.

You can draw and write on Google Docs files, Adobe® PDF®, and Microsoft® Office® documents.

Note: Drawing and writing tools are only available in the Classroom mobile app for Android and Apple® iOS®.

How to write notes

  1. Tap Classroom Classroom.
  2. Tap the class and tap the assignment.
  3. On Android, tap Your work.
  4. Choose an option:
    • If your teacher attached a file, tap the thumbnail to open and review it.
    • Attach a file from your Google Drive, such as a Google Docs file or a PDF.
    • Create a new document or a new PDF. For more information on creating an attachment, see Submit an assignment.

      Note: If you created a new PDF, it opens as a blank file and you can write notes or draw images on it.

  5. At the top, tap Mark Mark to view the drawing and writing tools across the bottom of your screen.
    By default, the Write Write tool is selected.
  6. (Optional) To view colors and pen sizes, tap Write Write and drag the tool panel up.
  7. Make any notes or drawings. For details, see Use the drawing and writing tools.
  8. Tap Save Save.


    If you don't tap Save Save, or if you leave the screen or tap Back Back before saving, you’ll lose your work.
  9. (Optional) To open your work in Google Drive, tap New tab New tab.

    Open in drive

How notes are saved

If the original file was a It's saved as a
Google Docs file Separate PDF
Microsoft Office document Separate PDF
JPG or PNG image file Edited file replaces original file
PDF Edited file replaces original file

Use the drawing and writing tools

Choose a tool

You can find all tools at the bottom of the app screen.

Use this tool To do this
Write Write Write or draw lines with a pen. You can change the width of lines with pressure.
Mark Mark Write or draw lines of even width with a marker.
Highlight Highlight Highlight text or images.
Select select Select a note to resize or move it.
Erase Erase Erase a note.
Add text Add text Add a text note.

Change a tool's color or size

The write, mark, and highlight tools are available in different sizes and colors. 

  1. To select a tool, tap it.

    Change color

  2. To change the tool’s color or size, tap the Up arrow Up arrow.


Add a text note

  1. Tap Add text Add text.
  2. Drag your finger to create a text field.
  3. Enter your message.
    • To make the text larger, pinch 2 fingers apart.
    • To make the text smaller, pinch 2 fingers together.
    • To resize the text box, tap a corner and drag it.

Erase a mark

  1. Tap Erase Erase.

  2. To erase a mark, tap it. 
  3. (Optional) To delete all marks on the page, double-tap Erase Erase and then Clear page.

Resize or move a note or image

  1. Tap Select select and tap the note or image.
  2. To resize, pinch 2 fingers apart or together on the note or image.
  3. To move a note or image, drag it to where you want it.

Zoom in or out on a note

  • To zoom in, pinch 2 fingers apart on the note.
  • To zoom out, pinch 2 fingers together on the note.
  • To pan over the drawing, drag 2 fingers across the page.

Undo or redo actions

  • Tap Undo Undo to immediately cancel an action. You can use it repeatedly to undo consecutive actions.


  • To redo an action, tap Redo Redo. You can use it to redo consecutive actions.
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