Work-energy is one of fundamental concept of physics. There is a subtle distinction among sources, forms and modes of transfer of work-energy process. Moreover, there are different meaning of work-energy in science and daily life which leads to misconception. This paper reported students’ undestanding and the method has been used to teach work-energy concepts. This study was implemented mixed method embedded experimental design. Subject consisted of 57 students of mechanical engineering who took Physics for Engineering course, enrolling in 2018/2019 academic year. Data were analyzed quantitatively are score of student’s conceptual understanding by paired sample t-test. Data were analyzed qualitatively are students’ responses by constant comparative method and interviews. Students’ conceptual understanding score was improved from mean’s score 44,40 to 72,54 (p < 0,01) and effect size was improved with high category (3,79), upper-medium N-gain (0,51). According to students’ respon and interview result, there were students’ difficulties in understanding work-energy such as interpreted work-energy concept in the context of science and used work-energy process. Moreover, teachers found difficulties about the role of language in the teaching of energy.
Assessment activities can help lecturer to understand the strengths and weaknesses experienced by students in learning. By implementing quality assessments and analyzing them to get information about student learning weaknesses, lecturers have a reference to make effective decisions in the learning process. Ability to understand is very important to solve physics problem. Geometric optics is a concept that occur in our daily life. In contrary, it doesn’t ensure students have correct concept about geometric optics. The purpose of this study is to diagnose students’ level of understanding in geometric optics concept. This study used mixed method design. The sample used in this study was Mechanical Engineering students who took Engineering Physics courses. Based on test result data using paired sample t-test, the average score was obtained from 39.08 to 75.76 (p <0.01). The results of data analysis from the three-tier test diagnostic instrument showed that there are 4 level of students’ understanding such as understand, guess, misconception, and don’t understand the concept. This study revealed the students’ difficulties such as students were not been able to analyze terms and conditions of f = R 2 and light refraction in half covered lens.
Pengembangan mesin yang dirancang dalam penelitian ini menggunakan penggerak (transmisi) berupa perpaduan pulley dan v-belt. Alasan menggunakan sistem penggerak berupa pulley dan v-belt adalah dirasa lebih mudah dan efisien dalam proses pengerjaannya. Tujuan dari penelitian ini adalah untuk menganalisa hitungan ukuran pulley dan v-belt yang cocok untuk mesin pencacah yang telah dikembangkan. Penelitian ini menggunakan metode eksperimental desain, yaitu melakukan pengukuran, pengamatan dan perhitungan terhadap spesifikasi teknis dari mesin, kemudian menganalisis data tersebut sehingga memperoleh gambaran mengenai kinerja mesin yang pada akhirnya dapat memberikan gambaran tentang kelayakan mesin. Hasil penelitian diperoleh: : (1) ukuran pulley berdiamaeter 90 mm dan 180 mm dengan bahan dari baja ST37. (2) Panjang v-belt yang dibutuhkan = 1.333,95 mm. (3) Jarak sumbu poros v-belt = 609,23 mm. (4) Kecepatan keliling pulley penggerak vP = 13,18 m/s. (5) Gaya keliling yang timbul Frate = 108,34 N.
Penelitian ini bertujuan untuk mengetahui pengaruh kecepatan dari gramatur terhadap proses pembuatan kertas. Penelitian ini penting kraena gramatur atau tebal berpengaruh kualitas kertas. Hal ini dikarenakan kualitas merupaka kunci utama produksi agar dipercaya konsumen. Data adalah data primer pada saat proses pembuatan kertas. Gramatur awal 125 gsm dan kecepatan awal 290 menit. Kemudia dilakukan pengujian perhitunga gramatur dan kecepatan yang menentukan kualitas kertas. Seperti berapa gramatur yang di perlukan untuk produksi kertas. Hasil yang didapat semakin tinggi gramatur semakin lambat kecepatan untuk produksi pada kertas dan jika semakin rendah gramatur kecepatan mesin akan semakin cepat , tapi akan ber pengaruh pada hasil produksi.
Problem solving learning is designed to develop students’ ability in solving scientific problem. The purpose of this study is to test the effectiveness of problem solving model on students’ learning outcomes and logical thinking ability. It employed a quasi-experiment with a 2x2 factorial design. The subject was Tenth graders of SMKN 6 Malang. Randomly, it determined two classes of control class and two classes of experimental class. The instrument of this research was logical thiniing test instrument and Physics learning outcome instrument. In addition, it used lesson plan on static fluid as an instrument. Normality and homogenity testing were employed before testing the formulated hypothesis. It employed Liliefors for normality testing and Bartlett for homogenity testing. To test the hypothesis, this research employed Two-ways of ANAVA and Scheffe testing. The results show that (1) Physics learning outcomes of students who learnt by means of problem-solving learning strategy is higher than students who learnt by means of conventional one. (2) It affirms the interaction between problem-solving learning strategy and logical thinking ability of students on Physics learning outcomes. (3) Physics learning outcomes of students who learnt by means of problem-solving learning strategy with high logical thinking ability is higher than students who learnt by means of conventional one. (4) Physics learning outcomes of students who learnt by means of problem-solving learning strategy with low logical thinking ability is higher than students who learnt by means of conventional one.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.