标题：PENGEMBANGAN BUKU AJAR MATEMATIKA MATERI PENJUMLAHAN BILANGAN DESIMAL DENGAN PECAHAN CAMPURAN BERBASIS PENDEKATAN SCIENTIFIC DI SDN 101771 TEMBUNG T.A 2018/2019
摘要：ABSTRACT Purpose of this study to determine the validity of mathematics textbooks in the Summation of Decimal Numbers with Scientific Approach Based Fractions in Tembung SDN 101771 FY 2018/2019. : analysis, development, validation, and revision. The subjects of this study were students of VA Elementary School 101771 in Tembung with 32 students with 12 male students and 20 female students. The data collection technique in this study was to use the results of assessments on aspects of the feasibility of content, language, and presentation, interview results, and results of student responses after product trials. The results of this study indicate that textbooks that researchers have developed are declared valid and in accordance with the characteristics of students.
关键词：Buku Ajar; Valid; Berbasis Pendekatan Scientific
