Validity of student worksheet based on problem based learning model assisted by practical tools with digital display

Abstract

Student worksheet is one source of learning as a guide for learners in achieving learning objectives during the investigation or problem solving. Practical tools with digital displays will assist the investigation process. Based on the analysis of the needs and characteristics of learners, and limitations of previous validation studies then the validation of student worksheets based on problem based learning model assisted practicum tool with digital display can be a problem solution. The purpose of this study is to produce students' worksheets and practicum tools developed under valid categories. This research method using descriptive statistics. The instrument used is a validation sheet filled by experts and practitioners. LKPD validation gets validity results on aspects of construct (presentation), content, grammar, and language. Validation tools get validity results on aspects of purpose, engineering operations, accuracy of use, and working principles. The average of the four aspects of LKPD validation was 0.91 by the development expert and 0.92 by the practitioner, and for the equipment of 0.93 by the electronics expert. Thus, it can be said that LKPD based problem model based learning and practicum tools with digital displays have valid categories.