Figure 1: Fourteen achievement effect sizes of twelve
studies.
Figure 1 denotes the allocation of the effect sizes
which ranged from 0.25 up to 1.91. Four studies (K4,
K11, K12, K13) shows the high effect sizes of more
than 1.0, while another (K1, K2, K3, K5, K6, K7, K8,
K9, K10, K14) shows the effect sizes of between 0
and 1.0. Effect size is obtained by calculating the
discrepancy among the probationary and control
group means divided by standard deviation of it.
The study concluded that constructive learning
approach which used frequently in different lessons
and subjects could significantly contribute to
learners’ academic achievement. Most Quantitative
research done between 1997-2017 shows the
effectiveness of constructive learning on academic
achievement.
4 CONCLUSIONS
Based on the results above included in the meta-
analysis, it was found that the outcomes of a
constructivist approach in the educational process are
most effectual for beginners’ academic success. The
synthesis of twelve research articles shows that
learning with constructivist approach has a positive
involve on students' learning outcomes. From
education level views, the constructivist approach
shows that the largest effect size at the higher
education grade and the lowest effect size at the
college level. Besides, the results of student's
achievement on learning process with constructivist
approach show the most significant effect size which
showed by learning discovery models, and project-
based learning shows the smallest effect size.
Through learning with the constructivist
approach, the learners could construct their
knowledge to improve the ability of literacy science
and technology that appear from reading, writing,
observing, and doing science activities so that it can
be used in social life later and solve the problems
which faced in daily of life. The results of the meta-
analysis can be a guide or rules for Indonesian
researchers to conduct empirical research related to
learning with constructivism approach.
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