School may be out for summer, but Zac Marben put on his teaching boots to learn you some back sevens. There will be a pop quiz later this week, so study this video frame by frame.

To get the video, you can click the individual link in the right column, or click here to browse our ever-growing collection of movies.

To view the video, you’ll need the latest version of Quicktime, which works for both Mac and PC, is available as a free download at www.apple.com/quicktime/download.