Development of Problem Based Learning Tools to Improve Visual Thinking and Self Efficacy of Seventh Grade Junior High School Students in Besitang

摘要

This study aimed to describe how: 1) the validity, practicality and effectiveness of learning materials using problem based learning, and 2) the improvemet of visual thinking ability and self afficacy against mathematics by using the learning materials. This type of research is development research. Development model used promblem based learnings development model which consist of ten steps. The research resulted products are lesson plan, teachers book, students book, students worksheet, tests visual thinking and self efficacy questionnaire. The first trial took place in class VII 1 and the second trial in class VII 2 SMP swasta RGM Besitang. Result of these research showed that: 1) learning materials were valid, both in content and construct validity, 2) learning materials were practical to be used, reviewed from validators assessment and students positive responses, 3) learning materials were effective, reviewed from mastery of learning and students activity and students positive responses, 4) increasing of students visual thinking ability was on medium category and 5) there was increase in students self efficacy against mathematics of trial 1 to trial 2.