The development of the 21st century requires learners to have a sophisticated knowledge insight in the era of global competition. The 21st-century generation must master high-order thinking skills. One of them is critical thinking skills. Critical thinking skills are skills that learners must possess. This study aims to analyze the profile of students' critical thinking skills with purposive sampling technique. Participants of this study were 234 students of class XI SMA Negeri (Public Senior High School) Academic Year 2016-2017.The test is in essay form that is tailored to the indicator of critical thinking skills according to Facione. Data were analyzed by a qualitative descriptive method. Based on the results of data analysis that students' critical thinking skills were still categorized as low. The percentage obtained from result of analysis about essay test that used got average mean value of interpretation aspect equal to 46,03% with low category, analysis aspect 60,20% with medium category, evaluation aspect equal to 42,82% with low category, aspect of inference is 40,16% with low category, explanation aspect 53,65% with low category, and self-regulation aspect 32,20% with low category. It was caused students got difficult for classifying, coding, categorizing, reviewing ideas, assessing arguments, analyzing arguments, assessing questions and assessing arguments, asking for evidence, alternative allegations, drawing conclusions, stating outcomes, justifying procedures, presenting arguments and self-examinations, corrections self. The results of this study provide information about the profile of students 'critical thinking skills so that teachers are expected to be able to design the process of learning activities, develop a specific subject of pedagogy with innovative learning models that can empower students' critical thinking skills.

This research aimed to find out the effectiveness of inquiry lesson (IL)-based immunity system module product to empower the students' critical thinking skill. This study was quasi-experimental research with pretest-posttest control group design nonequivalent. The participant or subject of research consisted of 67 Senior High School students in Kediri in Academic Year of 2016/2017 distributed in two classes: 33 students in the 11 th Natural Science 2 Grade as experiment class and 34 students in the 11 th Natural Science 3 Grade as existing class. The instrument used to collect data on critical thinking skill was essay test. Experiment class was treated using inquiry lesson-based module, and existing class using module commonly used at school. Data analysis employed t-test at significance level with p-value = 0.000 (p<0.05). The gap between pre-and posttest scores was 20.99% for experiment class and 10.76% for existing class. From the result of research, it could be concluded that learning using inquiry lesson (IL)based immunity system in learning process is very significant to empower the students' critical thinking skill.

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The objective of this study is to develop STEAM-based learning media (Science, Technology, Engineering, Arts, Mathematics) in grade 1 thematic learning to improve critical thinking skills and the culture of scientific literacy in grade 1 students. This media was developed based on the STEAM approach, as the result of the use of media through the syntax of analizing, synthesizing, drawing conclusions, and organizing strategies and tactics. The excellence of this innovative work focuses on improving critical thinking skills and scientific literacy. This type of research is research and development (Research and Development) with ADDIE design (Analysis, Design, Development, Implementation, Evaluation). Based on the results of the study before using STEAM-based colored two-dimensional Figure Mixing media, it was identified that the mean class of students' critical thinking skills was 74.80 and the mean science literacy class was 73.61. After using STEAM-based typewriter media it can be identified that the mean class of students' critical thinking skills was 86.67 and the mean science literacy class was 88.67. The results of this study prove that STEAM-based non-typed media developed can improve students' critical thinking skills so that it has a positive impact on scientific literacy. This study concludes that new learning media developed can improve the activeness of students and ultimately have a positive impact on student learning outcomes.

The study aims to analyze students inquiry skills in senior high school through the learning based-on the Hierarchy of Inquiry Model. The research with purposive sampling technique. Participants in this study sample were grade XI students of the 2016-2017 Academic Year State High School. The subjects of this study sample were 234 students. The instruments used weretests level of inquiry and observation sheets of independent skills consisting of 40 questions. The results of this study indicate that discovery learning is 79.26% with criteria skilled, inteactive demonstration of 74.13% with criteria that are sufficiently skilled, inquiry lesson of 52.42% is less skilled, the inquiry laboratory consisting of the guided inquiry laboratory is 44.36%, bounded laboratory inquiry for 36.47%, free laboratory inquiry for 34.36% overall with less skilled skills, real work applications at 33.81%, less skilled, and hypotetical inquiry 30.55% with very poor skills. The conclusions of this study indicate that using the learning model of level of inquiry can train students' skills with the maximum ability to sharpen their skills and skills to reach that level in order to achieve better or higher criteria. This is very necessary so that students are accustomed to exploring the potential in high-level thinking because with accustomed to high-level thinking, students will have high cognitive skills and independence in student learning