Blendspace is a fantastic tool that allows you to create flipped lessons by simply searching for content and then dragging and dropping it in the order you want. You can add YouTube videos, Google content, documents from your Google Drive, pictures, text, Dropbox content, and links to other websites. The genius of Blendspace is that the content opens in the same window so you don't have a messy chain of windows and tabs.
I have only the first week of lessons below (a 4 week unit). It integrates Google Forms, Padlet, and Today's Meet. I used ThingLink to explain each section of the Blendspace lesson below.