Table 4 shows that both approaches, the CCTL and the
conventional. Enhance the MCS of the students at both school
levels. In addition, the increase in students’ MCS at low-leveled
school (27.6%) being greater than the increase of students’ MCS
at medium-leveled school (23.4%). Based on Hake’s category
(1999), the increased at both school are in the low category.
However, the results of significance using a single t-test show that
the enhancement of students’ MCS at both school levels is
significant.
The results of significance test of the differences between the
increase in students’ MCS under CCTL and CVTL between the
two school levels are presented in Table 5. Table 5 shows that the
probabilty value (sig.) at both school levels are less than 0.05, so
leading to the conclusion that the two student groups taught under
CCTL approach at both school levels enhance significantly greater
in MCS than the students taught under conventional technique.
However, the results of the significance test of the differences of
MCS at both school levels taught under CCTL show no
significant difference in the means values. This means that the
CCTL approach is able to narrow the differences of students’
MCS in the two school levels. The means values indicate that
averagely the medium-leveled school students’ MCS increase by
0.340 is smaller than increase of students’ MCS at the lowleveled
school (0.368). Since there is no significant difference
between the mean values, the CCTL approach can be applied to
improve the students’ MCS at the two school levels.