Preliminary Phase Research Development of Learning Device Based On Problem Based Learning to Improve Mathematical Communication Ability Eighth Grade Students of Junior High School

Based on the preliminary analysis carried out in SMP Negeri 5 Kerinci, obtained information that mathematical communication ability students have not achieved optimally. One contributing factor is the unavailability of learning device that can facilitate students to improve mathematical communication ability. This is exactly what the underlying to perform development of learning device of mathematics in the form of Plan Implementation Learning (RPP) and Worksheet Students (LKPD) based on Problem Based Learning which provides an opportunity for students to be able to find its own concept of the subject matter being studied so that students can communicate knowledge the both orally and writing. The purpose of this study is expected to obtain a learning device based on mathematics problem based learning for class VIII SMP which has the characteristics of a valid, practical and effective. Data were collected through observation, documentation, questionnaires, interviews, and test mathematical communication ability. Subject of research were students class VIII SMP Negeri 5 Kerinci. This type of research is research Plomp development model consisting of a preliminary phase of research in the form of a needs analysis, student analysis, curriculum analysis, and concept analysis. In the prototype phase is to design a product that is based LKPD and RPP based Problem Based Learning, and then conducted a formative evaluation to determine the validity and practicality of the product. In the assessment phase of assessment and test the effectiveness of the practicalities test. The results of the analysis at the preliminary research stage, then arranged the development of learning device based problem based learning to improve mathematical communication ability eight grade students of SMP. However, in this paper the researchers only explain the results of the analyzes in the preliminary research phase, which define and define the requirements needed in the development of learning device based on problem based learning so as to improve the mathematical communication ability of students.