Accessibility extension for Google Chrome that enable text-to-speech and a picture dictionary in Google Docs. The voices available are for English, French, and Spanish.
A Google+ Game for Hangouts. You and others (your Google+ contacts) race with each other to find famous works of art within Google maps (indoor street view). Currently, the Palace of Versailles is the only available game.
Tool for scaffolding, managing, organizing, and assessing student projects in Google Drive. Doctopus gives teachers the ability to mass-copy (from a starter template), share, and manage grading and feedback for student projects in Google Drive.
The Goobric Chrome extension works alongside Doctopus to enable rubric-based grading of Google Docs right in a browser popup window using the rubric of your design.
Google Spreadsheets script that can help you manage the flow of Google Drive files that students share with you. Will create folders for you for as many course sections as you need.
Create Google Forms using drag-and-drop tools. Allows file uploads (that go to your Google Drive), multi-page forms, and greater control over submissions than normal Google forms.
Use your voice to type in Google Docs. Many language are supported. First, you will need to change the language of the document by choosing File -> language.
Use your mouse or trackpad to input text in Gmail and Google Docs. Useful for practicing handwriting, especially in languages that do not use the Latin alphabet.
Take notes (saved in Google Drive) as you watch a YouTube video. Video on left, notes on right. Use keyboard commands to pause & play video. (Keyboard commands do not work in Firefox.)
Google's social network. The "hangout" feature lets you do videochat, including some virtual classroom tools.
Limitations: Hangouts are limited to 10 participants.