Go-Chemist!: A Mobile App to Promote Students^ Achievement and Perceptions of Chemistry Irwanto Irwanto, Afrizal Afrizal, Isna Rezkia Lukman, Evi Tri Utami, Sherina Debora Manalu, Darius Agung, Yashmin Yashmin
Department of Chemistry Education, Universitas Negeri Jakarta, Indonesia
Department of Chemistry Education, Universitas Malikussaleh, Indonesia
Abstract
This study was conducted to investigate the use of the ^Go-Chemist!^ app on students^ achievement and perceptions of chemistry, especially on the topic of atomic structure. This study used a quasi-experimental pretest-posttest design. The respondents were 72 students consisting of 42 females and 30 males at a public high school in Jakarta, Indonesia. They were recruited from 2 intact classes, namely the experimental and control groups with a total of 36 students each. Students in the experimental group were instructed with the ^Go-Chemist!^ application, while students in the control group were taught using a printed textbook during the treatment. To collect data, the Atomic Structure Test (AST) and the Perception of Chemistry Questionnaire (PCQ) were completed by all respondents as pretests and posttests to measure changes in their achievement and perceptions. Independent and paired sample t-tests were used to check the difference and increase in the mean score between the two groups. As a result, students in the experimental group scored higher on achievement and perception than students in the control group after the intervention. In addition, students using the mobile app showed a significant improvement in achievement and perception compared to their counterparts. Based on the findings, it can be concluded that the ^Go-Chemist!^ app is effective for elevating students^ academic achievement and their positive perceptions on the topic of atomic structure. Thus, it is highly recommended for teachers and students to use this mobile app to support teaching and learning chemistry.
Keywords: Mobile learning, Achievement, Perceptions of chemistry, Atomic structure, Go-Chemist! app
