Indonesia Conference Directory

Chemistry learning should be able to facilitate students to have 21st century competencies and skills and also conservative attitude towards the environment. However, in its implementation was encountered obstacles, one of which is the problem of representative learning devices. The aims of study to produce and discover the quality of problem-based learning devices oriented to green chemistry in the reaction rate concept. Learning device consists of syllabus, lesson plan, student worksheet, modules, and test instruments. This research and development adapted Nieveens model which consisted of four stages: preliminary research, prototyping stage, summative evaluation, and reflection and documentation. The quality of the learning devices developed was measured through analysis of validity and practicality. Product validity assessment used validation questionnaires distributed to experts, the data obtained were analyzed by using the content validity formula. Practicality used response questionnaires assessed by teachers and students, and implementation of learning was analyzed by using a percentage of practicality. This study resulted in the average of content validity being 0,67 categorized valid. The practicality percentage of each espect is 90,87%, 80,06%, and 80,56% catogorized highly practical. The concluded that learning devices developed fulfills the criteria for developing quality products that are valid and practical.