Title: Analysis of Numeracy Literacy Question Items in Junior High School Mathematics: Analysis using Classical Test Theory

Authors: Zafrullah Z., FitriI A., Gunawan R.N., Nurjanah S., Mutiara E., Laksita G.E. Download the article in PDF

Abstract: Item analysis is an important part of evaluating student performance because it can identify the extent to which the questions can measure students' abilities accurately and fairly. This research aims to analyse Numeracy Literacy questions for 31 students from Class VIII at one of the Junior High Schools in Bantul, Special Region of Yogyakarta, using interview methods and analysis techniques for levels of difficulty and differences in questions based on gender and overall, with the help of the AnBuSo 8.0 application. The results showed that although the majority of questions were in the "Easy" category and were effective in measuring students' overall abilities, there were differences in the level of difficulty and differential ability of questions between genders, where questions were more effective in differentiating the abilities of male students compared to female students. These findings indicate the need to improve and develop questions to be more fair and equitable in measuring the abilities of students from both gender groups. By taking these differences into account, better question design can improve the accuracy and consistency of evaluations, providing a more accurate picture of students' overall abilities.

Keywords: numeracy literacy, question items, classical theory test, education.

Cite this article as: Zafrullah, Z., FitriI, A., Gunawan, R.N., Nurjanah, S., Mutiara, E., Laksita, G.E. (2025). Analysis of Numeracy Literacy Question Items in Junior High School Mathematics: Analysis using Classical Test Theory. Challenges of Science. Issue VIII, pp. 5-13. https://doi.org/10.31643/2025.01

Title: Mapping Research Trends of TikTok in Education: A Bibliometric Analysis

Authors: Nurjanah S., Ramadhani S., Zafrullah, Seran D.S.F, Rahoetomo R.B., Sandry Rory. Download the article in PDF

Abstract: The popularity of TikTok as a social media platform beloved by the general public enables reaching a broader audience through its engaging interface. The global proliferation of TikTok has transformed it from merely an entertainment platform into a potential educational tool. This study aims to identify research trends related to the use of TikTok in the field of education using bibliometric analysis. Data was obtained from 46 publications obtained from the Scopus database in 2020–2023, which were filtered based on TikTok keywords in the context of education. Data analysis was carried out with the biblioshiny package of the RStudio application. The results showed that publications increased sharply in 2022. Geographically, China and the United States contributed the most. The main keywords included “social networking”, “TikTok”, and “students” representing the research trends on utilising TikTok for learning. The most cited articles indicate TikTok’s potential as an innovative pedagogical tool to increase learners’ engagement and motivation and expand public access to education and health information. Further research was recommended to enrich multidisciplinary perspectives and maximise the benefits of TikTok for learning.

Keywords: bibliometric analysis, education, TikTok.

Cite this article as: Nurjanah, S., Ramadhani, S., Zafrullah, Seran, D.S.F, Rahoetomo, R.B., Sandry Rory. (2025). Mapping Research Trends of TikTok in Education: A Bibliometric Analysis. Challenges of Science. Issue VIII, pp. 14-23. https://doi.org/10.31643/2025.02