I like to use Office 365 Online, is there an extension for Google Chrome?

Sure is!  The Chrome plugin allows you to use Office Online without the need to sign into Word, PowerPoint, etc. online, over and over. 

From your Chrome Browser on your personal computer (Maranatha Christian Academy does not have Chrome on our Desktops) and install the browser extension and give it a try! 

From the Google Chrome Store:

Built for Chrome – Use Word, Excel, PowerPoint, OneNote, and Sway Online without needing Office installed.

Create with confidence – Use familiar formatting and layout options to express your ideas in full fidelity.

Work on the go – Get to your files from anywhere, thanks to integration with OneDrive and OneDrive for Business.

Copy and paste conveniently – Use Copy and Paste buttons on the ribbon and right-click menu, or use keyboard shortcuts for copying and pasting.

Here is the link.