DEVELOPMENT AND VALIDATION OF FLIPBOOK IN EARTH AND LIFE SCIENCE Journal title: IOER INTERNATIONAL MULTIDISCIPLINARY RESEARCH JOURNAL Authors: JEANETTE P. ORONCE, DEXTER ANDREW O. MANALO Subject(s): Arts and Literature, Biological Sciences, Business Administration, Computer and Information Science, Earth Sciences, Economics, Education, Electrical and Electronic Engineering, Engineering, Humanities, Law, Linguistics, Mathematics, Social Sciences, Literature, Agricultural Science