Flipped learning or the flipped classroom can look a little different in each classroom but the idea is the same. Create &/or gather lessons for students to review prior to class so you can work on activities during class. Flipped learning can also be a great opportunity for reteaching concepts to students that didn't get it the first time and for differentiation.
For my school, I think this modification of in class flipped learning might work best. The basic concept is the students will watch the video/podcast/etc. during a "station" then work with the teacher.
I found an Edutopia article on this written by Jennifer Gonzalez: http://www.edutopia.org/blog/flipped-classroom-in-class-version-jennifer-gonzalez
Here are some resources for research and help to get you started:
Articles and Blogs and Jonathan Bergmann on Flipped Learning "Turning Learning on it's head." SO many resources!
Flipped Learning Network
Wikipedia definition on flipped teaching
Knewton's blog on the flipped classroom - this page has a nice graphic
Educause 7 Things you should know about Flipped Classrooms - online PDF information sheet
University of Northern Colorado - university professor, Jerry Overmyer, maintains the site and shows videos showing on what flipped classrooms might operate, blogs, resources, etc.
TechSmith - Flip Your Classroom resources
There are also numerous books
