This study aimed at detemining the effect of Problem Based Learning Model on the ability of students’ critical thinking through lesson on the topic of effort and energy. The method of research was an experimental research by using post-test-one control group design. Experimental class was treated by problem based learning, while the control class was taught by conventional learning through lesson study. Population of this research was the high school at Al Hamzar, Tembeng Putik of the X grade which consisted of two classes. Those were X Mathematics and natural science 1 and X Mathematics and Natural Science 2 with the total number or students was 58. The sampling thechnique applied was saturated sampling technique. Then, the instrument used in the present research was essay test which contained 6 items. The test arrangement followed the indicators of critical thinking with a variety of possible answers. Having implemented both in the experimental and in the control class, there were improvements in learning process in tems of managing the time, the students and doing aperception. Testing hyphoteshis result by uisng t-test showed t-test = 1. 25 and t-table in signifance level was 5% was 0. 07, so t-test> t-table which meant the alternative hyphothesis (Ha) was accepted and null hyphothesis (Ho) was rejected , it could be concluded that problem based learning thorugh lesson study was significantly effective in students’ critical ability on the topic of effort and energy for the tenth garade students at Al Hamzar high school.

This PkM program aims to improve: (1) teacher skills in designing and developing KIT of Natural Sciences practicum tools, Practical tools, laboratory management SOP as well as integrated science materials with the potential of the surrounding environment. The method used in achieving these objectives is the implementation of inservice in the form of training and assistance. The training carried out is a training to develop the skills and creativity of science teachers in the production / design of an integrated natural science practicum device based on the environment and training to design learning using a scientific approach that utilizes the KIT of science that has been produced. Assistance is also carried out related to improving the ability of teachers to explore, elaborate and reflect on integrated science teaching materials. The output of this activity is in the form of KIT of integrated environment-based practicum tools equipped with SOP for the management of practicum with environmental conditions; Integrated practicum tools in integrated science learning (RPP, LKS, teacher's guide) to support scientific approach learning; Integrated science laboratory management SOP; Refresher teaching materials integrated science materials; Scientific article (national publication). The results of the activities that have been achieved include, increased understanding and skills of natural science teachers in the Jerowaru SMPN 1 Natural Science teacher group on integrated science material, increasing teachers' understanding of learning with an inquiry approach, increasing the skills of science teachers designing / making KIT Simple science made from raw materials from the surrounding environment to support science learning using the inquiry discovery approach (scientific approach), increasing the ability of science teachers to design learning tools with the inquiry inquiry approach (scientific approach), training the skills and abilities of science teachers in partner schools in implementing science learning with inquiry discovery (scientific approach) approach.

This research aims to develop and determine the quality of the contextual learning module accompanied by a concept mapping of elasticity material and law Hooke in class XI IPA MA Mu'allimat NW Pancor students. This type of research is research and development. The method used in this research is 4-D method, which consists of the stages of define, design, development and dissemination. This research is limited to the stage, development namely the development test on a limited scale. The data in this study were analyzed descriptively qualitatively. The research subjects included 3 lecturers and 3 physics teachers as validators, and students of class XI IPA 1 MA Mu'allimat NW Pancor as respondents. The validation of lecturers and physics teachers both resulted in a score of 3.85 and the development trial on a limited scale resulted in a score of 3.88. All research results indicate that the module is feasible to be developed

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This research is aimed at finding out 1) the effect of debate and discussion on the students' learning achievement; 2) the effect of high and low critical thinking ability on the students' learning achievement; and 3) the interaction between the instructional method and the critical thinking ability on the students' learning achievement. This research is quantitative administering experiment research. The population is the students of Informatics Education Study Program. The sample is the students who are taking 'Etika Profesi (Profession Ethics)' subject in the sixth semester. This grade consists of two classes: 6A and 6B. Based on the research and the data analysis, it is concluded that 1) there is effect on the students' learning achievement -the students' learning achievement taught through debating is higher than through discussion; 2) there is effect critical thinking ability on the students' learning achievement -the students with high critical thinking ability gain higher learning achievement; 3) there is a significant interaction between the instructional method and the students' critical thinking ability.