While specific details about the Yemen Fifth Grade Mathematics Curriculum are not readily available through online searches, the YCurriculum Ebooks app is a potential source of information. This app, available on Google Play, allows users to download PDF textbooks from the Yemeni Ministry of Education. It is recommended to explore this app for access to the curriculum. General information about the Yemeni education system can be found through resources like UNICEF, USAID, and the World Bank, which highlight the challenges and ongoing efforts to improve education in Yemen.