It was indicated from the results of a preliminary study in Elementary School that textbooks used have not been compiled in the form of themes that are in accordance with the subject matter. The textbooks have also not referred to one of the learning models. They have not involved students’ active learning and have not been able to develop students’ character. This research aimed to develop a textbook using active learning strategy of the learning tournament type with character building for elementary school students. The research used 4D model of Thiagarajan with the steps; define, design, develop, and disseminate. The data were collected using observation sheets, interview guides, questionnaires, character assessment sheet, and test. The data were analyzed using descriptive statistics. The result of the validity test showed that the textbook developed was valid. The result of the practicality test also showed that the textbook was practical to be used in learning. The result of effectiveness test showed that the textbook was effectively helped to improve student’ competence in the knowledge and character domain. The effectiveness of the textbook was based on the result of the effect size of the competence of students’ knowledge which was included in a large category and most of the students’ characters were in a good category.