Pengembangan Perangkat Pembelajaran Dengan Desain Didaktik Untuk Mengurangi Hambatan Belajar Siswa Pada Topik Segiempat Dalam Pembelajaran Matematika SMP
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AbstractThe purpose of this study were to: (1) describe the student's learning obstacle and related topics quadrilateral learning device that could reduce the learning obstacle, especially on quadrilateral, (2) develop the prototype of learning devices with didactical design on the topic quadrilateral, and (3) test the effectiveness of learning device which were developed in didactical design on the topic quadrilateral.The research method used was Research and Development with the steps of research: (1) preliminary research, (2) product design, (3) product validation, (4) revised product, (5) preliminary field testing, (6) main product revision; (7) main field testing; (8) revised product, and (9) effectiveness test. The results of the research were as follows.(1) Type of learning obstaclerelated to quadrilateral were: (a) learning obstaclerelated to the context information on the variation of matter; (b) learning obstaclerelated to the concept image of the base, height and other components of quadrilateral;(c) learningobstacle related to the relationship between the perimeter and area among the type of?aquadrilateral; (d) learning obstacle related to students' ability to solve the problems about quadrilateral which should be constructed in advance; and (e) learning obstacle related to the connection among the perimeter and area of??a quadrilateral without her mathematical concepts. Based on the learning obstacles, drafted a learning device that consists of a lesson plans, work sheets and response prediction and didactical antisipation. (2) Identification of learning obstacle used as a reference to develop learning device. Learning device then validated and revised for a preliminary field testing. In the preliminary field testing, there were still many students who made mistakes in solving the given problems. It was pointed out as learning obstacle. Analysis based on observation sheets, questionnaires, tests and interviews indicated that the device was too difficult for the students.. However, after the revision tested in the main field testing, the students began to decrease learning obstacles. (4) Test showed that the achievement of students who used the didactical learning devise better than student achievement with conventional learning.