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All Journal Jurnal Pendidikan IPA Indonesia Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan
Puspitasari, R.
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Veterinary

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Cognitive Conflict-Based E-Book with Real Experiment Video Analysis Integration to Enhance Conceptual Understanding of Motion Kinematics Mufit, F.; Asrizal, A.; Puspitasari, R.; Annisa N, A.
Jurnal Pendidikan IPA Indonesia Vol 11, No 4 (2022): December 2022
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v11i4.39333

Abstract

Students find it challenging to understand motion concept or mechanics in physics learning and often experience misconceptions. There is also a lack of teaching materials that promote conceptual understanding. This study aims to produce a valid, practical, and effective e-book based on cognitive conflict to enhance conceptual understanding. This research used explanatory sequential mixed methods. The effectiveness test was carried out through an experimental method with a pretest-posttest control group design. Using the cluster random sampling, 61 science students performed as the samples. The research instruments used were interview guides, observation sheets, questionnaires, and two-level multiple-choice concept tests. The data were analyzed qualitatively and quantitatively using Aiken's V formula, the percentage technique, and the Mann-Whitney hypothesis test. This study produced an e-book according to the four syntaxes of the cognitive conflict-based learning model (CCBL). Real experiment video analysis was integrated into the third syntax. The e-book is valid in content, construct, language, and graphics, with an average of 0.83 in the high category. This e-book is practical in terms of user convenience, attractiveness, and benefits, with an average of 79.6 in the strong category. This e-book is effective, with a significant effect of 0.001 0.05 on conceptual understanding and misconceptions. We concluded that the cognitive conflict-based e-book with real experiment video analysis integration is valid, practical, and effective in enhancing students' conceptual understanding of motion kinematics. 
Produksi Gas Metana (CH4) dari Feses Sapi FH Laktasi dengan Pakan Rumput Gajah dan Jerami Padi Puspitasari, R.; Muladno, Muladno; Atabany, A.; Salundik, Salundik
Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan Vol. 3 No. 1 (2015): Jurnal Ilmu Produksi dan Teknologi Hasil Peternakan
Publisher : Department of Animal Production and Technology, Faculty of Animal Science, IPB University in associated with Animal Scientist's Society of Indonesia (HILPI)

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Abstract

The aim of this experiment  was to compare the production of methane gas from lactating dairy cow feces by feeding with elephant grass (EG) and rice straw (RS). BALINGTAN methode in measuring methane gas was used in this research. Feces were collected as much as 1 kg in 24 hours and incubated for 8 weeks to measure methan gas. CRD (Complete Random Design) repeated measurements was used with 3 treatments : RS (100% rice straw), EG (100% elephant grass) and RSEG (50% rice straw + 50% elephant grass). Measured variables were methane gas, proximate feed analysis, feces proximate analysis, total of feces organic matter, ADF and NDF feces, C organics feces. Based on the research results generated methane gas production from lactating dairy cow feces had no significant in each treatment (P>0.05). The incubation process for 8 weeks showed a decreased of feces’s substrate and organic matters, significantly.  The decline of feces’s organic matter during fermentation was followed by methane gas production on 8th week in all treatments. It can be concluded that methane gas production from lactating dairy cow feces from RS, EG and RSEG produces methane equals but potentially, RS and RSEG higher than EGKeywords : methane gas, feces, lactating dairy cows, elephant grass, rice straw
Co-Authors A. Atabany, A. Annisa N, A. Asrizal, A. Mufit, F. Salundik