The first larger assignment I did with the students at WVSS was a lesson on developing composition in an image. Specifically, I wanted students to understand the concepts of foreground, middle ground, and background, and how these planes affect the message of an image.
I first had students work in groups of three to take photos on the digital SLR cameras of compositions where the subject was either in the foreground, middle ground, or background. Once they had three images that they were happy with, which had examples of the subject in all three different compositions, the students printed the images and build a three-dimensional construction of the image where each specific plane was cut out separate from the others and arranged further or closer to the background of the image.
From the front, the images look as they would normally, however when viewed from the side, you can see how the different layers of the image are separated from each other to create a 3D representation.