When you start creating a quiz in Google Forms the first thing that you need to do is to click on the settings cog and then choose quizzes.

Watch this tutorial:
This tutorial explains how to send the answers and feedback to the students' emails.
Application in the Classroom:
It is much easier to assess students and see if the material taught was understood well. Also, the automatic quiz scoring feature will enable students to get feedback immediately and learn from their mistakes.
Will you use Google forms and quizzes in your classroom? Share your thoughts in the comments section below.