摘要：This study aims to develop a teaching kit on fractions of theme 3 based on the theory of Bruner in terms of product quality in general (validity, practicallity, and effectiveness) and in improving the problem solving ability and learning achievement of grade four students of SD Labschool Unesa. This research is research and development using the model developed by Borg & Gall. The research subjects in the preliminary field testing were 4 students, while in main field testing 8 students. The operational field testing subjects in the experimental group were 17 students and in the control group 18 students. The data collection used the product evaluation sheets of teaching, teacher observation sheets, student observation sheets, achievement test, teacher and student questionaires. The data were analyzed using an independent sample t-test with the significance level of 0.05. The results show that the teaching kit is valid in the following categories the syllabus is good, RPP is very good, achievement test is good, and learning media is very good. So that the average result of all teaching kit is categorized as good. The implementation of the teaching kit can generally be done well. Based on the test results of the experimental group and control group, there are significant differences in the learning achievement so that the teaching kit is effective, and at the same time, the problem solving ability and learning achievement of the students who take the lesson using the teaching kit based on theory of Bruner has increased.
其他摘要：Penelitian ini bertujuan untuk menghasilkan perangkat pembelajaran pada materi pecahan tema 3 berbasis teori Bruner ditinjau dari kualitas produk secara umum (kevalidan, kepraktisan, dan keefektifan) dan dalam peningkatan kemampuan pemecahan masalah dan
关键词：teaching kit; theory of Bruner; problem solving ability; academic achievement
其他关键词：perangkat pembelajaran; teori Bruner; kemampuan pemecahan masalah; prestasi belajar
