From Science Education:
Yoon, et. al. (2013). The goal of this study at the Franklin Institute was to determine techniques to help guests learn while not interfering with the informal nature of the experience. They compared a mix of digital augmentation, graphic signage and paper feedback learning scaffolds. In general they found that learning increased as the number of scaffolds increased, but at a cost to the informal nature of the experience. For the full text of the article, contact Bryn Pernot.