Validitas Perangkat Pembelajaran Matematika Berbasis Masalah Terbuka yang Mengintegrasikan Nilai ANEKA
The aim of the study is to develop the set of mathematics learning materials based on open ended problem with ANEKA (Accountability – Nationalism – Public Ethics – Quality Commitment – Anti-corruption) basic values as an effort to increase the ability of various representation of mathematics for the grade VII students. The set of developed learning materials in this study are the student’s textbook and teacher’s guide in the standard competence of triangle and quadrilateral. Plomp’s development procedure was applied to conduct the study. In the first year, this study has reached the stage of testing, evaluation, and revision to determine the validity of mathematics learning materials. The validity of the content can be viewed on the suitability of mathematics learning materials developed by the theory of the development and characteristics of the learning model. The construct validity of mathematics learning materials is very valid which obtained from the expert.