Development of student worksheet for the instruction of digestive system in grade viii of junior high schools

Abstract

This development research aimed to create a product in the form of student worksheets that are valid and effective for use in the instruction of the digestive system in grade VIII of Junior High School. The method used was the four D model product development method namely define, design, develop, and disseminate. The instruments used were student worksheet validation sheets and the student response/questionnaire. The results of the validator's assessment indicated that the worksheet developed is quite valid with a mean score of 81.75%. Whereas based on the results of the questionnaire, it can be concluded that the worksheets are interesting for students; meanwhile, the worksheets could be completed by the students and the minimum standards were reached. Therefore, it can be concluded that the student worksheets developed are valid and effective, so they are suitable for use in the instruction of the digestive system in the grade VIII of junior high schools.