Halpern, Megan, Max Evjen, Dan Cosley, Michael Lin, Stephen Tseou, Erica Horowitz, Tejaswi Peesapati, and Geri Gay. 2011. “SunDial: Embodied Informal Science Education Using GPS”. MedieKultur: Journal of Media and Communication Research 27 (50), 18 p. https://doi.org/10.7146/mediekultur.v27i50.3341.