Abstract. The research was conducted to determine the effect of the application of CTL learning model based on lesson study with mind mapping media to the learning outcomes of students on colloid systems. The population of this research was all students of grade XI of SMA N 1 Sunggal. The sample was taken using on the purposive random sampling. The Experiment class was taught with Contextual Teaching and Learning (CTL) model based on Lesson Study with Mind Mapping media and the control class taught with conventional learning model. The data was collected using an objective test was consisting of 20 questions which validity, reliability, level of difficulty and power of difference had been tested. T test results showed that t calculate = 2.1 and t table = 1.6697 thus t calculate > t table which means that Ha is accepted and Ho is rejected. The enhancement of the student learning outcomes showed that the results of experiment class are g = 72.88%, while the control class is 68.97%. From the percentage, it can be seen that learning outcomes of the experiment class are greater than the control class. The analysis of developing cognitive aspects pointed out that C1 = 70.02%, C2 = 73.58%, C3 = 68.63%, Thus the domain of cognitive level are on the cognitive aspects of C2. The result of Lesson Study Analysis showed the results of 71.09% at the first lesson and 88.28% at the second lesson. It means that there is increasing adherence to the indicators after two lessons. Based on the above results, it can be concluded that the result of studying chemistry of the students of class XI of SMA Negeri I Sunggal TA 2014/2015 taught by a CTL model based on Lesson Study with Mind Mapping media was higher (72.88%) than those taught by conventional learning models (68.97%) in the subject matter of colloids System.

This study aims to determine the effect of the application of Science Technology Society (STS) learning in high school students of class XI IPA. This research is a quasi-experimental research using posttest only design. The sample used is 64 students from Senior High School in Bantul district, Yogyakarta. Samples were obtained using purposive random sampling. Data were collected using posttest value to determine the effect of Science Technology Society (STS) learning and using Student Worksheet to know student ability. The data were analyzed by using ANOVA. The results showed that Science Technology Society (STS) study had significant effect, with a significance value 0,043 (p<0,05). Based on these studies, it can be concluded that the learning Science Technology Society (STS) influential in students’ science process skills.