This research was carried out with the aim of producing appropriate augmented reality-assisted textbooks to improve patriotism character of fourth grade elementary school students, to determine the effectiveness of appropriate augmented reality-assisted textbooks in increasing patriotism character of fourth grade elementary school students.  This type of research is Research and Development (R & D) with reference to the development model of Brog & Gall (1983). The subject of preliminary field testing involved six students; the subject of the main field testing involved nine students. Data collection techniques used observation guidelines, interview guidelines, need analysis, assessment validation sheets, student response scales, teacher response scales, and self-assessment scales for the patriotism character. The data analysis used t test and MANOVA test with a significance level of 0.05. The results showed that: the developed textbook assisted with augmented reality has the criteria of "feasible" based on the validation of material experts, media experts, linguists, teacher responses, and student responses; the book is also proven to be effective in increasing patriotism character. The effectiveness of this textbook can be seen from the results of the t test and the MANOVA test which shows a significant increase in understanding the concept and patriotism character with a p value of 0.000 less than the significance of 0.05 (p <0.05).