The Development of Mathematics Learning tool to Improve Critical Thinking Ability and Self Efficacy By using Problem Based Learning of State Senior High School Sultan Iskandar Muda Medan

摘要

The research aims to determine: (1) the effectiveness of learning instruments are developed, (2) the increasing the ability to critical thingking and self efficacy of student using learning instruments developed. This research is development research. Development model used is Dick and Carrey model which consists of ten stages. The results of the defining phase is used to design a learning instruments, then this draft is validated and tested in classroom to see its effectiveness. The populations of this research are all of the students at Senior High School and the sample choosen is purposive subject Which are in eleven grade I of Sultan Iskandar Muda Senior High School. From the results of trials I and field trials II obtained: 1) learning devices that meet the criteria of effectiveness, effectiveness in terms of a) students learning completeness in the classically, b) achievement of learning purpose; and c) learning time; 2) improvement creative thinking and problem solving mathematically ability of students by using learning devices based inquiry model; Futhermore, it is suggested that teachers can use the inquiry model as an alternative model of learning, with guidance or questions can be affordable given by students, so that students more easily understand the problems given.