GSAT attend the Guam Federation of Teachers Fair August 12, 2019 By Guam CEDDERS August 10, 2019: Leah Abelon, GSAT Center Coordinator and Tanya Simer, CEDDERS Research Associate, demonstrate the features of the various Assistive Technology devices to Mara Wusstig, during the Annual Guam Federation of Teachers’ Health Fair at the Guam Premium Outlet.