Asst. Prof. Erlyn Geronimo has been teaching for more than 20 years. She taught in UP Diliman and UP Manila before she got affiliated with the UST College of Education in 2005.
She served as Supervising Teacher in Mathematics from 2011 to 2016 at the Education High School. In 2011, she placed First in the Licensure Examination for Teachers. She was also recognized as the Most Outstanding Instructor in 2014 and Most Outstanding Assistant Professor in 2016 in the Dangal ng UST Awards. She is currently pursuing her Ph.D. in Mathematics Education in UP Open University.