The Effectiveness of Research Based in Vitro Textbook Application in Contextual Learning on Scientific Attitudes Mastery of Biology Students

This research aims to determine the effectiveness of research-based in vitro textbooks in achieving students' learning outcomes on scientific attitudes mastery. The population of the study was 74 students of undergraduate Biology study program Semester VI academic year 2019/2020 of Universitas Negeri Medan. The Sample was taken by using perposive sampling technique where the classses were grouped in a control class and an experimental class. The experimental class was given treatment by using research-based textbook while the control class used the textbook which was not research-based. The design of the study used Pretest-Posttest Control Group Design. The research instruments used was a questionnaire. To test the hypothesis the reseacher used t-test. The result showed that the mean of posttest from control class was 81,528 on scientific attitude mastery while the posttest mean of experimental class was 91,026. The t-test in the experimental class showed that tcount was 5,413> t table 2,02809 on scientific attitude mastery. Thus the group of students which was given treatment using research-based textbooks had a higher mean score than the group of students without using research-based textbooks.