When collecting artifacts of this kind, and when working toward generalized conclusions based on those artifacts, one generally tends to want a broad sample. The textual artifacts recently collected by the team, however, have been mainly educational in nature.
In terms of the item above, it's all about the fold, which transform a simple sheet of paper into a low-tech test-prep technology. Try doing that with your tablet pc.
The following item, though an educational artifact, is also about birds: so it does double-duty.