Identifikasi Pengetahuan Metakognisi Calon Guru Fisika

Novia, Hera; Kaniawati, Ida; Rusdiana, Dadi

doi:10.21009/0305010403

Cited by 3 publications

(2 citation statements)

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“…Hidrolisis enzimatik relatif lebih efisien dalam menghasilkan gula karena dapat meminimalkan pembentukan senyawa beracun sebagai hasil dari proses hidrolisis asam. Namun, kelemahan dari metode ini adalah dibutuhkan waktu lebih lama daripada proses hidrolisis asam dan biaya tinggi bahan enzim yang dimurnikan (Novia, 2011).…”

Section: Pendahuluanunclassified

PEMBUATAN ETANOL DARI LIMBAH KULIT KETELA (Manihot esculenta crantz) OLEH AKTIVITAS FUNGI

Adyasa¹

2019

Preprint

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Karya ilmiah ini muncul karena banyaknya limbah kulit ketela yang terbuang dari produksi keripik ketela pada dasarnya kulit ketela masih dapat dimanfaatkan untuk menjadi sebuah energi terbaharukan yaitu etanol. Pada umumnya buah ketela di Indonesia menggunakan spesies Manihot esculenta crantz sehingga menurut karakterisisasi/komposisi kulit ketela mengandung selulosa sebesar 43.626%. Tujuan dari karya ilmiah ini adalah untuk mengetahui kemampuan dari aktivitas enzimatis melalui proses hidrolisis menggunakan mikroorganisme efektif yaitu fungi dan fermentasi menggunakan ragi/khamir. Hasil dari karya ilmiah ini untuk parameter glukosa menggunakan metode DNS (3,5 – dinitrosalilisat) dan parameter etanol menggunakan metode GC – MS (Gass Chromatography – Mass Spectophotometry). Penelitian sebelumnya ini dilengkapi dengan dua tahap yaitu tahap pendahuluan yang disebut sebagai hidrolisis dengan menggunakan fungi. Kemudian tahap inti yang disebut sebagai fermentasi memanfaatkan mikroorganisme ragi/khamir. Hasil penelitian dari berbagai studi pustaka menunjukan bahwa variasi perlakuan hidrolisis dan fermentasi menyebabkan terbentuknya senyawa etanol. Adapaun hasil rata-rata menunjukan bahwa etanol tertinggi didapatkan melalui proses hidrolisis fungi Aspergillus fumigatus dan fermentasi terbaik dengan menggunakan Saccharomyces cerevisae pada hari kedua menghasilkan etanol sebesar 3.76% (v/v).

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Section: Pendahuluanunclassified

PEMBUATAN ETANOL DARI LIMBAH KULIT KETELA (Manihot esculenta crantz) OLEH AKTIVITAS FUNGI

Adyasa¹

2019

Preprint

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“…The difficulties experienced by students in understanding the concept of the crystal structure are caused by a need for more reading sources, such as textbooks, that can help strengthen understanding so that innovation is needed in learning. (Novia, H. 2013).…”

Section: Introductionmentioning

confidence: 99%

The Effectiveness of the Problem-Based Flipped Classroom Learning Model to Improve Conceptual Understanding of Physics Teacher Candidates on Crystal Structure Material

Rusnayati,

Ruswandi,

Khotimah

2023

J. Sci. Learn.

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The limited time allocation for lectures in the classroom is an obstacle to presenting student-centered learning. This is one of the factors that prospective physics teacher students experience conceptual difficulties, especially in crystal structure material. So the purpose of this study was to determine the effectiveness of the problem flipped classroom learning model on understanding the concepts of prospective physics teacher students on crystal structure material. This study used a quasi-experimental method with a one-group pretest-posttest research design. The subjects of this study were 16 students who took solid-state physics courses. Data analysis techniques were carried out using normality tests, homogeneity tests, and pretest and posttest average difference tests. Then test the N-gain to see the increase in the pretest and posttest results and continue with the effect size test using the effect size. The instrument used was a test of mastery of the concept of crystal structure material. The results of the paired sample t-test analysis show that the Problem Based Flipped Classroom significantly influences learning outcomes with a t value of 11.439 with a significance of 0.000. Students' understanding of crystal structure material has increased with an N-Gain of 0.75, which is in the high category. This means that the pretest and posttest scores have a high increase. While the results of the effect size test obtained a score of d = 2.86, which means that learning with the Problem Based Flipped Classroom has a strong effect on student learning outcomes on crystal structure material.

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Stacking-Racking Analysis: Improving Physics Students' Problem-Solving Skills with ECIRR Learning Model and a Metacognitive Approach

Febriyanti,

Novia,

Agus Danawan

2024

J. Pendidik. Fis. Teknol.

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A preliminary study highlights the persistent challenge of low problem-solving skills among 21st-century students. Therefore, this study examines the ECIRR learning model with a metacognitive approach to improve students' problem-solving skills in static fluid material. The method of this study is quasi-experimental with a one-group pretest-posttest design, enrolling 33 students from class XI at a public high school in Subang City. The Static Fluids Problem Solving Test (SPRING) instrument is used to collect data, which will then be analyzed using the stacking-racking technique. The results showed that ECIRR model learning with a metacognitive approach significantly improved students' problem-solving skills by 2.66 on the logit scale in the moderate category. The highest increase in problem-solving skills was on the plan a solution indicator, and the lowest was on the visualize the problem indicator. The decrease in the level of difficulty of the SPRING instrument indicates that learning has a positive impact. Thus, ECIRR model learning with a metacognitive approach can improve student problem-solving skills in a static fluid material. This study can be strengthened by using a control class to compare the results obtained in the control and experimental groups so that the effectiveness of the intervention can be determined objectively.

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Identifikasi Pengetahuan Metakognisi Calon Guru Fisika

Cited by 3 publications

References 0 publications

PEMBUATAN ETANOL DARI LIMBAH KULIT KETELA (Manihot esculenta crantz) OLEH AKTIVITAS FUNGI

PEMBUATAN ETANOL DARI LIMBAH KULIT KETELA (Manihot esculenta crantz) OLEH AKTIVITAS FUNGI

The Effectiveness of the Problem-Based Flipped Classroom Learning Model to Improve Conceptual Understanding of Physics Teacher Candidates on Crystal Structure Material

Stacking-Racking Analysis: Improving Physics Students' Problem-Solving Skills with ECIRR Learning Model and a Metacognitive Approach

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