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All Journal Journal of Physics: Theories and Applications Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education)
Agus Supriyanto
Sebelas Maret University
Education Materials Science & Nanotechnology Physics

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Problem Based Learning on Newton's Law: Can It Improve Student Creativity? Nurlaili Wisda Agustin*; Sarwanto Sarwanto; Agus Supriyanto
Jurnal Pendidikan Sains Indonesia Vol 9, No 4 (2021): OCTOBER 2021
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (251.757 KB) | DOI: 10.24815/jpsi.v9i4.20974

Abstract

Creativity is important in facing a challenging future life. Therefore, current learning is focused on not only values but also soft skills such as student creativity. Few teachers provide opportunities for students to develop their creativity in the classroom. This creativity can be developed and trained through various learning strategies. Probem-based learning was chosen in this study as a means to increase students' creativity through two learning methods, experiment and demonstration.  This study seeks to determine the effect of experimental and demonstration methods with problem-based learning model on student creativity on Newton's law material.  The subjects included 72 tenth-grade science students in Surakarta, Central Java.  They were selected using the purposed random sampling technique where out of 8 tenth-grade science students in SMA Al Islam, Surakarta, 2 classes that met the research category were selected.  This experimental study collected the data using pretest and posttest for cognitive data and questionnaire using a Likert scale for student creativity data. Data were analyzed descriptively through independent sample t-test. The results showed that both methods through problem-based learning model had a significant effect on the level of student creativity. From the characteristics of the methods and the number of students in the high creativity category, experimental method is superior to be applied. It is implied that teachers can use the experimental method with problem-based learning model in Newton's law to develop student creativity soft skills.
Prototype of an alcohol monitoring for raw water supply pumps control system Dhimas Widhy Surya Brata; Artono Dwijo Sutomo; Agus Supriyanto
Journal of Physics: Theories and Applications Vol 9, No 1 (2025): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jphystheor-appl.v9i1.100250

Abstract

Monitoring of alcohol waste that could potentially enter the raw water intake pump of the Semanggi Water Treatment Plant (WTP) on the Bengawan Solo river is still done manually, with officer watching near the pump for 12 hours per shift. A prototype alcohol monitoring system designed to make more efficient device than manual method that needs 34,7 s to turn off the pump and finding the optimal distance between the sensor and the water pump. The working principle is automate pump control, so the water pump can automatically turn off when alcohol is detected by the sensor and turn on again when no alcohol is detected. The reaction time to turn off the pump is calculated from the time the 2 ml alcohol container is placed under the sensor until the pump turns off, while the time to turn the pump back on is calculated from the time the pump turns off until the pump turns back on. The reaction time of turning off the pump and restarting the pump at 7% alcohol percentage is 1.80 s and 0.72 s, while at 24% alcohol percentage is 0.87 s and 1.90 s. The Bengawan Solo river velocity ranges from 0.04 m/s to 0.27 m/s. Thus, this device turn off water pump time is faster by 94,8% than manual method and the optimal distance between the sensor and the water pump is more than 0.28 m and less than 0.39 m.
Co-Authors Artono Dwijo Sutomo Dhimas Widhy Surya Brata Dwi Maryono Febri Liantoni Nurlaili Wisda Agustin* Sarwanto Sarwanto