Development of Writing Text Description Learning Modules Based on Scientific Approach Class VII Junior High School

The research aims of this study is to describe the process of development of learning modules writing text description based on valid, practical, and effective scientific approach used by class VII students. The subject of this research is 32 students of class VII.1 SMPN 1 Batang Anai. Data of the research consists of qualitative and quantitative data. Qualitative data is collected through filling validation and practicality module questionnaire. Quantitative data is obtained from students learning outcomes in writing text description learning. Result of this research shows that learning modules writing text description based on scientific approach produced is valid, practical, and effective. It is proven by the results of validity, practicality, and effectiveness module. Module validity by experts is obtained based on the module validity value of 88.63% so that the module is very valid category. Module practicality is obtained based on the practicality of students at the one-on-one evaluation stage of 79.63 with the practical category, the practicality of the teacher at the one-on-one evaluation stage is 92.50% with a very practical category, practicality of students at the small group evaluation stage of 92, 05% with a very practical category, the practicality of students at the large group trial stage amounted to 89.29% with a very practical category. The effectiveness module based on the results of the performance test is 80% of students get complete grades (> 71) with a success percentage of 87.03 with the predicate B so that the category is very effective.