Ugwuanyi, C.S. , Nduji, C.C. , Elejere, U.C. and Omeke, N.E. 2020. Effect of Flipped Classroom and Think Pair Share Strategy on Achievement and Retention Among Senior Secondary School Physics Students. International Journal of Sciences: Basic and Applied Research (IJSBAR). 52, 2 (Jul. 2020), 136–148.