Abstract:
The aimed of the research was analyzed the effectiveness of IBL (inquiry-based
learning) device for training thinking skills of students based on SOLO taxonomy. The research
was a part of research and development with the application of used one group pretest-posttest
design. Research participant included 88 grade X student taken from senior high school in
Manokwari. Collected of data used an achievement test to measure thinking skills was used a
rubric SOLO taxonomy with five levels. Wilcoxon test was used for data analysis. It is revealed
that sig. 0.000 < 0.05, 64 students experienced an increased level of thinking, 24 students were
ties, and no students decrease in the level of thinking. Based on findings data, inquiry-based
learning applications to train the thinking skills of learners is effective.