The Effectiveness of Guided Discovery Based Learning Materials to Increase Students’ Learning Outcomes

This research aimed to know the effectiveness of learning materials based on guided discovery increasing students’ learning outcomes. The research model used in this study was Research and Development (R&D), but it is only limited to the development stage, namely by conducting a trial I. Trial I was conducted on 30 students of class XI Mia 1 of Senior High School Muhammadiyah 3 Surabaya. The research design used was one group pretest posttest design. The results showed that the effectiveness of the learning device was obtained from the results of learning and student responses. Learning outcomes are obtained through student learning outcomes assessment sheets on thermochemical material, while the response results are obtained from the questionnaire response sheet. The results obtained were analyzed by quantitative descriptive way. The results showed that the guided discovery learning device succeeded in increasing the number of learning outcomes by as much as 20% in the medium category and 80% in the high category, besides that most students gave positive responses to the learning materials developed. Keywords—guided discovery, learning outcomes