Verso is a free service that offers a good platform for delivering flipped lessons to students and gathering feedback from them. Recently, Verso added some helpful new features.
As a teacher you can create Verso classrooms that your students join. Previously, your students had to go to the Verso site and enter a class code to join your classroom. That option still exists but now you also have the option to import students into your classroom by uploading a CSV file containg their names and email addresses.
In your classroom you can post videos, links, and files from your Google Drive account. You can include response prompts with each item that you post. You can specify how many responses you want to gather from each student. When students sign into your Verso classroom they will see every new item you've posted for them. If you've posted a video it will play within the Verso environment. Students can track their completion progress in their account dashboards. The latest version of Verso offers a "student view for teachers." That means that you can now view the classroom as your students do.
Verso offers free iPad and Android apps. Verso can also be used in your web browser.