Effectiveness Research-based Textbook of In vitro Rooting of Sipahutar Pineapple (Ananas comosus L.) on Undergraduate Biology Education Students’ Science Process Skills in Universitas Negeri Medan

Abstract

The purpose of this study is to test the effectiveness of research-based textbook of In vitro rooting of Sipahutar Pineapple (Ananascomosus L.) in improving science process skills of undergraduate biology education students. This study is quasi-experimental research using pretest-posttest designs. The research subjects are determined through cluster random sampling method. Data collected through pretest and posttest and measured by using essay tests. The data statistically analyzed by using independent sample t-test using SPSS 22 for Windows. The result shows that there is a significant difference between experiment class and control class in science process skills (tcount=9,678; p=0,00). Further, N-Gain test performed to find out the increasing score from pretest to posttest. The result shows N-Gain score for group using Research-based Textbookof In vitro Rooting of Sipahutar Pineapple (Ananascomosus L.) is 0.64 (moderate category) while the other group N-Gain score is 0.35 (low category). It concluded that Research-based Textbook of In vitro Rooting of Sipahutar Pineapple was effective in improving students’ science process skills.