In today's global era, thinking skills are essential to be mastered by students. This research intended to develop and implement PBL-based worksheets integrated with green chemistry and ethnoscience to improve thinking skills, which included generic science skills and critical thinking skills. These skills were observed through learning outcomes, which were divided into three domains, i.e., cognitive, psychomotor, and affective. The cognitive aspect was assessed through pre-and post-test results, the psychomotor domain was valued through an essay test and observational sheets, and the affective domain was evaluated using questionnaires and observational sheets. This research was conducted with XI graders of MAN I Semarang and SMA Pekalongan. There were three rounds implemented; first, preliminary research which has observed the problems in chemistry learning, particularly on the hydrolysis topic and continued to the development of worksheets, then validated. The next round was the implementation of the worksheets. The N-gain test was used to see the influence of the developed worksheets on the increase in critical thinking skills and generic science skills. The critical thinking scored 0.58 (moderate), while the generic science, which covered scale awareness and logical inference, scored 0.63 (moderate) and 0.73 (high), respectively. A paired t-test results revealed that there was a remarkable increase in the logical inference and awareness of scale. Moreover, the results of the study found that the applied worksheets were practical for cognitive, affective, psychomotor seen from the learning outcomes.

Learning process in SMPN 5 Jambi is still dominated by the behavior paradigm with low learning outcomes.This study aims to reveal the significance of the student-centered learning, using quasi-experimental design. Weemployed research instrument of science process skills test results and creativity questionnaire. The collecteddata were analyzed using ANOVA and Tuckey test. The results, there was no significant of the effect of theinvestigation group model and creativity on science process skills (p = 0.083). The results also indicate theinteraction between group investigation model and science process skills (p = 0.03). The teacher applies thegroup investigation model for high creativity students.

This study was based on less varied learning model used in chemistry and to practice thinking skills that students can apply the concepts to solve chemical problems. It was done to try out the inquiry training model. The research instruments were used to measure dependent variable which is scientific thinking. Two learning models were applied: inquiry training model applied on the experiment group and lecture method applied on the control group. Critical thinking as the moderator variable that was measured through the critical thinking tests. The experimental research used  2 x 2 factorial design 8 meeting. The data were analyzed using two ways Anova and Tuckey test. The study concluded that: 1) There are differences of the scientific thinking skills between the inquiry training model and the lecture method learning model. 2) There is a significant difference of the scientific thinking skills between low and high level of critical thinking skills. 3) There are differences of scientific thinking skills of low levels critical thinking students between students who were taught by inquiry training model and that of by lecture learning method. 4) There are differences in scientific thinking skills among the group of students who had high level of critical thinking taught by inquiry training model and lecturing learning model. 5) There is no interaction between the application of inquiry training model to the level of critical thinking to the students scientific thinking skills.

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This research aimed to determine the effect of group investigation learning  model and motivation on the students' learning result. The research employed a quasi experimental research with nonrandomized control group pretest-posttest design. The research used factorial design of 2x2. The population of this research was the first semester of seventh grade students. The sample used VII A and VII B class, samples were taken by using purposive sampling. The learning result data measured using of the tests and motivation data using of questionnaires. The data are analyzed using two-way(s) ANOVA. Test analysis showed that difference between post-test score of experiment class were higher than the control class. Based on the result, it can be concluded that: 1) the implementation of the group learning model investigation affect the students’ learning result, 2) motivation also influences the student learning result. 3) There is no interaction between the group investigation learning  model and motivation on the students' learning achievement.   Keywords: Group Investigation, Motivation and Learning Result.