Google Classroom is a platform that allows teachers to create classes, send and receive assignments, and much, much more. It is a simple way to created a paperless enviroment.
Getting Started with Google Classroom
Instructional Technology / G Suite for Education iPad App Tutorial
Creating and Managing Classes in Google Classroom
Managing Classes and Work for Students
What's new in Google Classroom- Video
Google Classroom- Getting Started Help Center
Google Classroom- Update for 2018