High school AP Physics teachers and students may want to check out Flipping Physics, a project focused on teaching instructors how to flip their physics classrooms. A flipped classroom is a learning structure in which students watch recorded lectures at home and then work through problems interactively in the classroom with their instructor's guidance. Launched in 2013, Flipping Physics is the brainchild of Jonathan Thomas-Palmer (a.k.a. Mr. P.), an educator with over 13 years of experience teaching AP and college prep physics and who has a degree in mechanical engineering. Visitors to Flipping Physics will find an extensive library of lecture videos that are organized broadly into algebra-based and calculus-based physics with each subsequently grouped into topics and accompanied by PDF lecture notes. Those new to using a flipped classroom methodology may want to start by watching the video "Showing the Differences Between a Traditional and Flipped Classroom," found on the main page. This seven-minute video shows two of Mr. P.'s classes (filmed one year apart and teaching similar content) side by side simultaneously, with one using a traditional lecture and the other being a flipped classroom, where there is noticeably more engagement and interaction. Flipping Physics also has a plethora of resources on making videos for flipped classrooms and on teaching students how to learn in a flipped environment.