http://www.educause.edu/sites/default/files/library/presentations/ELI091/PS23/ELI_Stewart_Johnson_Fritz_VassarCollege.PDF Active Learning in Field-Based Classes Using Tablet PCs for Collaborative Data Collection and Mapping http://connect.educause.edu/display/48072 2009-01-22 http://www.educause.edu/sites/all/themes/educause/images/e_rss.png