Zoom design is an instructional systems design technique consisting of:
Displaying a big-picture view of what is to be learned, akin to the "establishing shot" of a house in the opening of a film
Zooming in to a sequence of detailed close-ups to explain the content in detail, in separate lessons
Good design also periodically "zooms out" for a big-picture view of where the learning-of-the-moment fits into the larger plan and sequence—for an integrated vision of the whole.