The objectives of this study were to profile the relationship of scientific attitude level and learning style preference among junior high school students in Bandung. This study utilized a survey research design with a total sample size of 110 students. A scientific attitude questionnaire and a visual, auditory, and kinesthetic (VAK) learning style inventory were administered in this study. The questionnaire measures five aspects of scientific attitude, specifically rationality, curiosity, open-mindedness, aversion to superstition, and objectivity. The VAK learning style inventory evaluates the preferred means of receiving sensory information. The scientific attitude questionnaire provided consistent results, as indicated by its reliability coefficient (0.896). The results show that junior high school students have an average level of scientific attitude and generally prefer a kinesthetic learning style. There was a medium relationship between scientific attitude and learning style among the students (Cramer’s V coefficient = 0.239). It is concluded that learning style must be considered in implementing a science lesson, especially in the Indonesian context.
The present study aims to investigate the effect of Project in Problem-Based Learning on students’ scientific and information literacy in grade 8 studying in one of the private schools in Bandung in the human excretory system topic. A sample of 39 students in two classes was selected purposively from the five classes available in the school. An experimental group comprising 19 students received the instruction by Problem-Based Learning with the project at the end of the lesson while the control group comprising 20 students received the human excretory instruction by using Problem-Based Learning without a project. The data was collected via the pre-test and post-test administration. The results were statistically analyzed using SPSS software by employing an independent t-test. Results indicated that after the one-month treatment period, students in the experimental group have a higher score in the scientific literacy test compared to the students in the control group even it was not significantly different. Therefore, the results of students’ information literacy showed that there was a significant difference between the experiment and control group. It is concluded that Project in problem-based learning is useful to conduct as the learning strategies in the classroom to improve students’ scientific and information literacy.
[Development of The Virtual Laboratory of Engineering Chemistry to Increase Students' Critical Thinking and Science Processes Skills] TTujuan penelitian ini yaitu untuk mengembangkan media pembelajaran laboratorium virtual kimia yang didesain untuk dapat meningkatkan keterampilan berpikir kritis dan keterampilan proses sains mahasiswa secara mandiri dimasa pandemi covid-19. Pendekatan yang digunakan yaitu penelitian dan pengembangan dengan model ADDIE. Validasi ahli materi dan media digunakan untuk menilai kelayakan media. Uji kepraktisan melalui uji kelompok kecil dan kelompok besar. Data dikumpulkan melalui pengamatan langsung, wawancara, observasi, dan angket. Data dianalisis menggunakan statistik deskriptif. Hasil penelitian menunjukkan bahwa laboratorium virtual sangat layak dan praktis untuk digunakan pada pembelajaran kimia teknik serta untuk meningkatkan keterampilan berpikir kritis dan proses sains mahasiswa secara mandiri.
Penelitian ini bertujuan untuk mengetahui pengaruh campuran bahan bakar pertalite dengan Naphthalene terhadap konsumsi bahan bakar, torsi dan daya pada sepeda motor 4 langkah. Data yang diamati pada penelitian ini adalah perbandingan konsumsi bahan bakar, torsi dan daya yang dihasilkan oleh sepeda motor 4 langkah. Pada penelitian ini, penulis lebih memilih untuk menggunakan metode penelitian dengan metode eksperimen. Hasil dari penelitian ini yaitu, bahan bakar pertalite murni didapatkan konsumsi bahan bakar sebesar 0,576 kg/jam, torsi 7,11 N.m, dan daya 6,45 Hp. Data rata-rata dari campuran bahan bakar 1 liter pertalite dengan 5 gram Naphthalene didapatkan konsumsi bahan bakar 0,352 kg/jam, torsi 7,56 N.m, daya 6,77 Hp. Bahan bakar 1 liter pertalite dengan 10 gram Naphthalene didapatkan konsumsi bahan bakar 0.342 kg/jam, torsi 7,86 N.m, dan daya 6,97 Hp. Dari penelitian ini didapatkan hasil, Campuran bahan bakar 1 liter pertalite dengan 10 gram Naphthalene terbaik untuk konsumsi bahan bakar, torsi dan daya dibandingkan bahan bakar pertalite murni dan campuran 1 liter pertalite dengan 5 gram Naphthalene.Kata Kunci : Kata kunci: konsumsi bahan bakar, daya,torsi, Naphthalene, pertalite. This study aims to determine the effect of a mixture of pertalite fuel and Naphthalene on fuel consumption, torque and power on a 4-step motorcycle. The data observed in this study is a comparison of fuel consumption, torque and power produced by a 4-step motorcycle. In this study, the authors prefer to use research methods with experimental methods. The results of this study, namely, pure pertalite fuel obtained fuel consumption of 0,576 kg / hour, torque of 7,11 N.m, and power of 6,45 Hp. The average data from the 1 liter pertalite fuel mixture with 5 grams of Naphthalene obtained fuel consumption of 0.352 kg / hour, torque of 7,56 N.m, power of 6,77 hp. Fuel of 1 liter of pertalite with 10 grams of Naphthalene obtained fuel consumption of 0,342 kg / hour, torque of 7,86 N.m, and power of 6,97 hp. The results of this study showed that the best 1 liter pertalite with 10 grams of Naphthalene fuel mixture is best for fuel consumption, torque and power compared to pure pertalite fuel and a 1 liter pertalite mixture with 5 grams Naphthalene.keyword : Keywords: fuel consumption, power, torque, Naphthalene, pertalite.
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