Development of Constructivism-Base Student Work Sheets of Aldehydes and Ketone Materials for Organic Chemistry II Students

Abstract

Teaching materials that were applied previously in the form of MFIs are not yet constructivism-based. During the time, the applied student  worksheet  (LKM)  is  monotonic  so  that  students  are  less motivated in the learning process, as the solution, a constructivism-based LKM need to be developed. The research aims to develop constructivism- based Student Worksheets on aldehyde and ketone material. This type of research was Research and Development with a 4-D development model which includes Definition, Design, Development, and Disseminate. This research was only carried out until the development stage and was followed by limited trials. The research was conducted at the FKIP University of Riau. The object of the research was constructivism-based LKM. The data analysis technique used  in  the study  was descriptive statistical analysis, which was calculating the percentage of validation values. The average score of the assessment of the five aspects of the LKM feasibility by the validator team, which was didactic, constructs of feasibility of presentation, construct of linguistic, technical feasibility, characteristics of constructivism successively have a score of 98%, 100%,

99%,  100%  and  100%,  respectively.  The  average  score  of  overall

validation of constructivism-based Aldehyde and Ketone LKM is 99.39% with a valid feasibility category, meaning that the developed LKM are feasible to use in the real teaching.