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All Journal Buletin Poltanesa Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Diyaa Aaisyah Salmaa Putri Atmaja
Universitas Nahdlatul Ulama Kalimantan Timur
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education

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Implementation of Direct Instruction Based on Formative Assessment with Chunking Technique to Improve Students’ Understanding of Basic Economic Concepts in Semester I Diyaa Aaisyah Salmaa Putri Atmaja; Mad Yusup; Elfreda Aplonia Lau; Ida Rosanti; Purbawati Purbawati; Titin Ruliana
Poltanesa Vol 27 No 1 (2026): June 2026
Publisher : P3KM Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/tanesa.v27i1.3698

Abstract

In this classroom context, several first-year students showed difficulty maintaining learning focus when basic economic concepts were delivered through long and continuous oral explanations. This classroom condition created challenges in Introduction to Economics, a conceptual course that requires students to understand abstract and interrelated concepts. This study aimed to improve student's understanding of basic economic concepts through the implementation of Direct Instruction integrated with formative assessment using a chunking technique. A Classroom Action Research design was employed in two cycles involving 19 first-semester Industrial Engineering students at Universitas Nahdlatul Ulama Kalimantan Timur. Learning materials were presented in small, sequential conceptual units, and each unit was followed by formative assessment and immediate feedback. Data were analyzed descriptively by comparing class mean scores, the number and percentage of students achieving the minimum mastery criteria, and observed changes in student’s learning engagement. The results showed a positive improvement in the local classroom context. The percentage of students achieving the minimum mastery criteria increased from only 15.8% in the pre-action stage to 36.8% in Cycle I and 84.2% in Cycle II, with the average score of class rising from 34.3 in pre-action stage to 59.8 in Cycle I and 83.8 in Cycle II and average score of students who achieved mastery rising from 70.6 in pre-action stage to 77.4 in Cycle I and 88.8 in Cycle II. Students also demonstrated better focus, more active participation, and reduced anxiety during the learning process. These findings indicate that Direct Instruction combined with chunking and formative assessment has practical potential to support the improvement of basic economic concept learning in the class studied.
Pengaruh Beban Kerja dan Lingkungan Kerja Terhadap Produktivitas Karyawan di PT. Putra Tunggal Mandiritama Samboja-Kutai Kartanegara-Kalimantan Timur Muhammad Ridwan; Purbawati Purbawati; Diyaa Aaisyah Salmaa Putri Atmaja; Mad Yusup
Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Vol. 3 No. 4 (2025): Juli: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupiter.v3i4.967

Abstract

The research was conducted in the construction department which has around 90 employees with a high workload and a less supportive work environment. The problem in this study is how the workload and work environment affect employee productivity, while the purpose of the study is to determine the effect of workload and work environment on employee productivity. The method used in the study is the multiple linear regression analysis method with a sample of 65 employees. Testing was carried out using the F test and t test and calculating the determination factor. From the results of the t test calculation, the calculated t-value for X1 (workload) was obtained in succession of 3,743 and the calculated t-value for X2 (work environment) was 6.187. These values ​​are greater than the value in the t-table of 1,999, which means that the workload affects employee productivity and the work environment affects employee productivity.The result of the F test calculation produces 14,872 > from the value in the F-table (3,143), it can be concluded that Workload (X1) and Work Environment (X2) have an effect on Employee Productivity (Y) at PT. Putra Tunggal Mandiritama. From the determination coefficient test, the Adjusted R Square value is 0.455 or 45.5%, meaning that the work productivity variable is influenced by the workload and work environment variables by 45.5%. Furthermore, the remaining value of 54.5% is caused by other factors.
Co-Authors Ida Rosanti Mad Yusup Mad Yusup Muhammad Ridwan Purbawati Purbawati Titin Ruliana