# There is a significant statistical difference at the level of 0.05 between the mean ranks of marks of the two groups of the study i.e. the experimental and the controlling groups, for the experimental group. This appears in the post achievement test on the unit of the algebraic terms and expressions studied by the first preparatory students. | # There is a significant statistical difference at the level of 0.05 between the mean ranks of marks of the two groups of the study i.e. the experimental and the controlling groups, for the experimental group. This appears in the post achievement test on the unit of the algebraic terms and expressions studied by the first preparatory students. |