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All Journal Jurnal Ekonomi dan Kewirausahaan Journal of Mathematics Education and Science
Titik Purnamasari
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Economics, Econometrics & Finance Education Mathematics Social Sciences

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PENGARUH KEPEMIMPINAN, KEDISIPLINAN, DAN KOMITMEN ORGANISASI TERHADAP KINERJA KARYAWAN BPU ROSALIA INDAH KARANGANYAR Titik Purnamasari
JURNAL EKONOMI DAN KEWIRAUSAHAAN Vol. 15 No. 2 (2015): Jurnal Ekonomi dan Kewirausahaan : Juny
Publisher : Universitas Slamet Riyadi

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Abstract

This study was a survey done to BPU Rosalia Indah Karanganyar employee, aims to find out the effect of leadership, discipline, and organization comitment on the employee performance. The research sample comprised 122 employees. The sample taking technique used proportional clustered random sampling by proportional 30 percent each division. The data were collected trough direct observation and questioner. They were analyzed using the multiple regression technique. There is significant effect of the leadership on the BPU Rosalia Indah Karanganyar employee performance and the leadership giving most dominant effect on the employee performance; there is significant effect of the discipline on the BPU Rosalia Indah Karanganyar employee performance; and there is significant effect of the organization commitment on the BPU Rosalia Indah Karanganyar employee performance. The leadership, discipline and organization commitment rate variables give a contribution of 42,3 percent. Keywords: leadership, discipline, organization commitment, employee performance
Developing Computer Science Unplugged Worksheets to Enhance Second-Grade Number Concept Understanding Titik Purnamasari; Raden Sulaiman; Ali Shodikin
Journal of Mathematics Education and Science Vol. 9 No. 1 (2026): Journal of Mathematics Education and Science
Publisher : Universitas Nahdlatul Ulama Sunan Giri Bojonegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32665/james.v9i1.6341

Abstract

This study aimed to develop and evaluate Computer Science Unplugged (CS Unplugged)–based student worksheets to enhance second-grade students’ understanding of number concepts. This study employed a Research and Development approach using the ADDIE model and involved 26 second‑grade students in a limited practical trial. The developed worksheets were evaluated through expert validation, practicality testing based on teacher and student responses, and effectiveness testing using a one-group pretest–posttest design. The results indicated that the worksheets achieved a very high level of validity (media: 92.67%; content: 91.67%) and practicality (students: 91.38%; teacher: 90%). The effectiveness test showed a substantial improvement in students’ learning outcomes, with the mean score increasing from 67 in the pretest to 90.38 in the posttest, and an N-gain score of 0.73, categorized as high. These findings demonstrate that CS Unplugged–based worksheets are valid, practical, and effective for improving students’ understanding of number concepts while supporting the integration of computational thinking in elementary mathematics education.  
Co-Authors Ali Shodikin RADEN SULAIMAN