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This study was aimed to construct a test instrument for assess critical thinking skills of high school students on the concept vibration and wave that are focused on sound wave. The research using a mixed method with sequential exploratory design, consisting of: 1) the preliminary study phase; 2) the design and review phase; 3) testing phase the test instrument. Test instruments in the form of essays, consisting of 18 questions contain 5 indicators and 8 sub indicators of critical thinking skills expressed by Ennis, with the questions that are qualitative and contextual. Analysis of implementation test results using hypothesis testing to different average values to get an overview of the test instruments ability to distinguish between the critical thinking skills of students who get learning process which to exercise critical thinking skills of students and who get learning process which not to exercise critical thinking skills of students. ANOVA one way using to get a picture of the ability of instruments are constructed in identifying similarities critical thinking skills among students who had learning process to exercise critical thinking skills using problem based learning, learning cycle model (learning cycle) 5E, and inquiry learning model. Pearson product moment correlation test was performed to obtain the relationship between critical thinking skills with mastery of leraning materials on students- test implementation.