THE DEVELOPMENT OF STUDENT WORKSHEETS TO IMPROVE HIGHER ORDER THINKING SKILLS ON THERMOCHEMICAL TOPIC
This study aims to determine the design of Student Worksheets (LKPD) with a Problem-Based Learning (PBL) model that can improve higher-order thinking skills on thermochemical topics for class XI IPA SMAS Kartika I-2 Medan, to find out that the LKPD with PBL on a thermochemical topic that has been prepared has met the achievement of learning objectives and eligibility criteria according to BSNP standards and to find out the responses of teachers and students regarding the LKPD with PBL that has been prepared. This development is carried out using the R&D method with the 4D development model (Define, Design, Develop, Disseminate). The instrument used was a non-test instrument in the form of a modified BSNP questionnaire and with students’ and teachers’ response questionnaires to the developed LKPD. The results showed that the LKPD compiled had met the eligibility criteria according to the BSNP standards which were validated by material validators and media validators who were UNIMED chemistry lecturers by obtaining an average percentage score from material validators is 80.78% with the criteria "feasible" and the average percentage from media validators is 94.81% with "feasible" criteria. Meanwhile, based on the results of the teacher's response to the designed LKPD, the results obtained an average percentage is 94.17% with the "feasible" criteria and an average percentage of student responses is 86.56% with the "feasible" criteria. So, the student worksheets with problem-based learning models to improve higher-order thinking skills are feasible to use in the learning process, especially on thermochemical topics.
Keywords: Development, student worksheets, higher-order thinking skills, thermochemical topic, problem-based learning.