Experimental groups were
taught using Polya George’s Problem Solving Model (POGPROSMO) while control groups were
taught the same topics using expository method. Major findings of the study revealed that
students taught Algebra with POGPROSMO achieved higher and retained more than those taught
with expository method. There was no significant difference between the mean achievement and
retention scores of male and female students in the study. It was recommended that Mathematics
teachers should adopt POGPROSMO in teaching Algebra.