This is the official site for G Suite for Education.
Google's official learning management system.
Add-ons are very similar to the extensions that you find in Google Chrome. They give the various Google Apps extra functionality. Some add-ons that help in the classroom are posted below.
Extensions are small software programs that customize the browsing experience. They enable users to tailor Chrome functionality and behavior to individual needs or preferences. Below is a list of my favorite Chrome extensions for the classroom.