With this project, TERC and the Museum of Science (MoS) Boston are studying how family and school visitors integrate iPod Touch versions of the Signing Science Pictionary (SSP), Signing Science Dictionary (SSD), and Signing Math Dictionary (SMD) into their museum experience and the impact of dictionary use. This report focuses on a sub-study involving family visitors to the Harvard Museum of Natural History (HMNH). Prior to this sub-study, TERC and the MoS conducted a primary study that examined use of the dictionaries at the MoS. Findings from this study showed the following: (1) Visitors