A four-year research and development program at CAPOLSA (the Centre for the Promotion of Literacy in Sub-Saharan Africa) was inspired by widespread dissatisfaction with poor literacy outcomes of mass basic schooling in Zambia and sought to test the generalizability of a scientifically grounded, computer-mediated instructional resource developed in Finland, for effective intervention in an African society where different linguistic and educational conditions obtain. Specific challenges and opportunities posed by the local sociocultural context included the prevalence of multilingualism, the relatively transparent orthographies of local languages, and poor infrastructure of the public school system. Software was translated and field-tested un...