Abstract
This study aimed to develop an Android learning media on the concept of redox as an effective, efficient, practical, real-time learning media and in accordance with the facilities owned by students and evaluate the quality and usability of the app. The approach used in this research was a quantitative approach in the form of development research, while the model used was the Hannafin and Peck (1988) model. The data of this study were collected from the process of development, expert evaluations (expert reviews), and small group evaluation. 20 students of the chemistry education study program at a university in Indonesia volunteered to use and evaluate the app, Data was collected by using questionnaires. The results indicated that the quality of the application obtained from expert review was 94.7%. Furthermore, the small group evaluation shows that the usability of RedoksPro version 1.1 scored 86.7. The Android-based learning media of redox concept (RedoksPro application version 1.1) could be utilized as a mobile learning resource in learning the specific concept of reduction and oxydation reactions.
Highlights
Chemistry topics usually consists of specific terms and its complexity has promoted difficulties for students to fully comprehend the entire concepts of chemistry, and the redox concept is included
Some problems encountered by students in mastering the concept of redox are contributed by large number of definitions and terms used by both teachers and chemistry textbooks
The activity theory is a conceptual framefork relies on the activity which was originally introduced by the Russian psychologist Aleksei Leontiev
Summary
Chemistry topics usually consists of specific terms and its complexity has promoted difficulties for students to fully comprehend the entire concepts of chemistry, and the redox concept is included. To better comprehending the concept of redox, students need to master prerequisite concepts such as chemical subtances, molecules, chemical reactions, balanced chemical reactions, and the concept of oxidation states of many substances. Those concepts are somehow abstract and quite challenging for students. Android platform provides opportunity for teachers to combine all types of media i.e visual, audio, text, and evaluation tools that activate multiple recognitions of students [5] They could practically activate most of their five senses at the same time, which is very useful for students in mastering challenging course like chemistry. The research questions for this research are: 1) How valid is the the RedoksPro app in terms of learning media and content knowledge, and 2) How ease the RedoksPro app to be utilised as learning resource in supporting the distance learning?
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