Validity of learning devices mathematical based on quantum teaching and learning model for improving critical thinking

This study aims to produce learning devices based on quantum learning models and learning to improve students' critical thinking skills. Learning tools are developed in the form of Learning Implementation Plans (RPP) and Mathematics Student Worksheets (LKPD) in the eighth grade of SMP. This learning tool refers to the Plomp model which consists of 3 phases, namely the initial research stage, the development phase or the prototyping phase and the assessment phase. The product of learning said to be valid if the resultant learning were valid of content and construct. The instrument used in this research was a validation sheet containing aspects of presentation, content and material feasibility, graphics or display and language. developed Validity of who are called as validator consists of 3 experts in mathematical education, an expert in Indonesian language and an expert in educational technology. Expert validation result show that valid criteria in mathematics learning devices.