Abstract
Abstract
This research is motivated by learning barriers and low understanding of the mathematical students of Madrasah Ibtidaiyah on the concept of decimal fraction. The purpose of this research is to determine the effective learning technique for decimal fraction by using storybook. This type of research uses didactical design research which includes the stages of prospective analysis, metapedia didactic analysis, and re-prospective analysis. The draft of the design applied to twenty-eight students' sixth grade of Madrasah Ibtidaiyah Nurul Hidayah Kadupandak Serang City. Observation sheets, interviews, and test comprehension were used as a data collection instrument for implementation execution. Didactic design using literature based math was made through one revision and it consist of eight steps. The results showed that the implementation of didactical design using literature based math can help students build their mathematical understanding of the decimal concept. It can be seen from the reduced percentage of students' errors in solving comprehension test questions from 71.6% to 11.6%. Therefore, for elementary teacher who has storybooks related to mathematical concepts are advised to try the eight learning steps developed in this study.