The counterclockwise rotation of the earth on its axis is evidently simulated in this module. Details of how the earth’s rotation causes day and night are discussed as well. The DOST Courseware is a locally-produced, all-original Filipino highly interactive multimedia educational resource packages available both in Windows and Android versions, conceptualized, digitized and produced as spearheaded by the Science Education Institute (SEI-DOST) in partnership with the Advanced Science and Technol