PENGEMBANGAN BAHAN AJAR BERBASIS MODEL PROBLEM BASED LEARNING PADA POKOK BAHASAN PENCEMARAN LINGKUNGAN UNTUK MENINGKATKAN HASIL BELAJAR SISWA KELAS X SMA NEGERI GRUJUGANBONDOWOSO

Abstract

Abstract.Problem based learning is a learning model that uses a problem as a first step in learning to develop thinking abilities, problem solving and intellectual abilities. The study aimed to know the developing of proccess of problem based learning materials and to increase of the student achievements after using problem based learning material on enviromental contamination subject for tenth grade senior high school Grujugan Bondowoso. The research included research development that based on 4-D models by Thiagarajan and Semmel (1974,) but it is restricted in the3-D step (define, design, develop). There searchuses 7 validators to assess the books quality, 19 students in a small group (XI IPA 2 class) and 29 students in a large group (X.1 class). Data obtained from students and teachers questionnaires, validator sheets, questionnaires of the legitility and difficulty level, pretest, post test questionnaires, teacher’s activity, student’s activity, and student's responses. The result of this research showed that problem based learning material has valid with 85,63%, questionnaires of the legitility and difficulty level has valid with 86,05%, teacher’s activity with 97,72%, student’s activity with 83,39%, student's response get positive response with 91,80% and improving student’s achievement by 32,30%.

Key Words: 4-D Model, environmental contamination, learning material, Problem Based Learning.