Abad, Lourdes Veronica S. A Case study of teachers' and students' perceptions of codeswitching in teaching Science and Mathematics in Miriam College High School Lourdes Veronica S. Abad - Quezon City Ateneo de Manila University Loyola Schools 2009. English Language and Literature Teaching Subjects--Uniform Titles: English language Literature teaching LC Class. No.: CD-00245T