This document provides an overview of flipped classrooms. It begins by introducing the concept of flipped classrooms and tracing their origins back to educators in the 1990s and 2000s who pioneered techniques like peer instruction and video lectures assigned as homework. The rest of the document discusses how flipped classrooms allow more class time for hands-on activities and discussion by moving direct instruction outside of class. It also addresses common concerns teachers have about implementing flipped classrooms and recommends tools like EdPuzzle that can help teachers create interactive video lessons. Finally, it prompts readers to create their own EdPuzzle video and share it.