Effects of Two Modes of Computer Assisted Instruction on Pupils’ Achievement and Retention in English Language Spelling in Niger State- Nigeria Journal title: International Journal of Innovative Research in Computer Science and Technology Authors: Dr. Aniah Anthony, Sani Shahid Anka Subject(s): Electrical and Electronic Engineering, Chemical Engineering, Civil Engineering, Computer Science, Artificial Intelligence, Computer Science, Information Systems, Computer Science, Interdisciplinary Applications, Engineering, Multidisciplinary, Engineering, Civil, Computer Science, Cybernetics, Computer Science, Theory & Methods, Computer Science, Software Engineering