Conclusions
Based on the research findings and discussion, it can be concluded that the integration of GI and TTW could
cover the weakness of GI. The implementation of GITTW teaching strategy was proven that it could maximize
the empowerment of students’ metacognitive skills. It shows that the score of metacognitive skill of students
taught by GITTW was the highest. TTW learning strategy can improve students’ metacognitive skills higher than
GI and conventional strategies. This may be an evidence that the GITTW as a new teaching strategy can be considered
as one of the variations in teaching strategies that can empower metacognitive skills. Further research
need to consider the measurement of metacognitive skill, because in this research using essay questions test
was difficult for the researcher to use this measurement test in a big class. Also, it is necessary to investigate the
effect of the GITTW strategy related to other variables such as students’ critical thinking skills, problem solving
and creative thinking skills.