Interactive Media Tutorial Model Based on Concept Hierarchy: Improving Chemistry Learning Outcomes in Salt Hydrolysis Material

Abstract

The purpose of this study was to produce valid, practical, and effective interactive media in improving students' learning abilities on salt hydrolysis material. The development procedure used in this study is the development model from Borg and Gall and the instructional design step from Dick and Carey which is divided into 4 stages including the needs analysis stage, the product design stage, the validation and evaluation stage, and the final product stage. The media validity test was carried out by expert validators which included chemical material experts, media experts, and instructional design experts. While the practicality test and effectiveness test were carried out in class XI MIA 2 SMA N 1 Karang Baru Aceh Tamiang. The results of the interactive media validation of the tutorial model based on the concept hierarchy on the developed salt hydrolysis material were declared very valid with a percentage gain of 80.42% for material experts, 81.94% for media experts, and 83.61% for learning design experts. As for the percentage score of the practicality of the media, it was 89.57%, which was included in the very practical category. While the effectiveness of the media on students' learning abilities can be seen through the results of the N-gain test where the average N-gain score obtained is 0.5 (moderate category) or 56.34% which is quite effective.