Add & Subtract of Dis Fraction

The DOST Courseware is a locally-produced, all-original Filipino highly interactive multimedia educational application packages available both in Windows and Android versions, conceptualized, digitized and produced as spearheaded by the Science Education Institute in partnership with the Advanced Science and Technology Institute and in cooperation with the Department of Education Philippine Normal University and University of the Philippines-National Institute for Science and Mathematics Education which aims to develop information and communication technology learning innovation to support the upgrading and improvement of science and mathematics education in the country.