One of the important Google Drive features that is overlooked by several teachers is the ability to use Drive files offline. This allows you to access, view and edit files such as Google Docs, Sheets, and Slides without being connected to the Internet. You can easily do this by installing Google Docs Offline Chrome extension and make a slight change in your Google Drive settings. Here is how to do it:
1- Install Google Docs offline Chrome extension :
‘You must be connected to the Internet.
Use the Google Chrome browser.
Don’t use incognito mode.
Install and enable Google Docs offline Chrome extension.
Make sure you have enough free space on your device to save your files.’
2- Turn on offline access
Open your Google Drive files offline
Open Chrome. Make sure you’re signed in to Chrome.
Go to drive.google.com/drive/settings.
Check the box next to “Sync Google Docs, Sheets, Slides & Drawings files to this computer so that you can edit offline.”’
Source: Drive Help