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PENGARUH MODEL PEMBELAJARAN GUIDED DISCOVERY TERHADAP KEMAMPUAN PEMECAHAN MASALAH DAN HASIL BELAJAR FISIKA PESERTA DIDIK Zulkifli, Lalu; Sutrio, Sutrio; ?Ardhuha, Jannatin
JIPP (Jurnal Ilmiah Profesi Pendidikan) Vol 5, No 1 (2020): Mei
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (52.336 KB) | DOI: 10.29303/jipp.v5i1.112

Abstract

Abstrak: Salah satu model yang dapat digunakan untuk melatih kemampuan pemecahan masalah dan meningkatkan hasil belajar peserta didik adalah model pembelajaran guided discovery. Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran guided discovery terhadap kemampuan pemecahan masalah dan hasil belajar fisika peserta didik pada tahun  2019 bertempat di SMA 6 Mataram. Jenis penelitian yang digunakan kuasi eksperimen dengan desain penelitian non-equivalent control group design with pre-testand post-test. Teknik pengambilan sampel digunakanpurposive sampling, sehingga terpilih XI MIPA 4 sebagai kelas eksperimen dan XI MIPA 5 sebagai kelas kontrol. Kelas eksperimen diberi perlakuan berupa model  pembelajaranguided discovery sedangkan kelas kontrol diberi perlakuan berupa model pembelajaran konvensional. Instrumen penelitian terdiri atas tes kemampuan pemecahan masalah (KPM) berupa tes uraian dan tes hasil belajar berupa tes pilihan ganda untuk pre-tes digunakan materi gerak harmonis sederhana, untuk post-tes digunakan materi elastisitas zat padat,  dengan mempertimbangkan validitas, reliabilitas, taraf kesukaran soal dan daya beda soal. Uji analisis hipotestis  menggunakan uji manova bantuan IBM SPSS 23. Hasil uji hipotesis didapatakan nilai signifikan 0,004 pada taraf nilai signifikan 0,05 yang artinya H0 ditolak. Berdasarkan hasil analisis tersebut dapat disimpulkan bahwa terdapat pengaruh model pembelajaran guided discovery terhadap kemampuan pemecahan masalah dan hasil belajar fisika peserta didik.Kata kunci: Guided discoveri, Kemampuan pemecahan masalah, Hasil belajarAbstract: One model that can be used to practice problem solving skills and improve student learning outcomes is the guided discovery learning model. This study aims to determine the effect of guided discovery learning models on problem solving abilities and physics learning outcomes of students in 2019 at SMA 6 Mataram. This type of research used quasi-experimental research design with non-equivalent control group design with pre-test and post-test. The sampling technique used was purposive sampling, so XI MIPA 4 was chosen as the experimental class and XI MIPA 5 was chosen as the control class. The experimental class was treated as a guided discovery learning model while the control class was treated as a conventional learning model. The research instrument consisted of a problem solving ability test in the form of a breakdown test and a test of learning outcomes in the form of a multiple choice test for pre-tests using simple harmonic motion material, for post-tests the material used was solidity elasticity, taking into account validity, reliability, level of difficulty problems and different power problems. Hypothesis analysis test using IBM SPSS 23 manova test. Hypothesis test results obtained a significant value of 0.004 at a significant value of 0.05 which means that H0 is rejected. Based on the results of the analysis it can be concluded that there is an influence of guided discovery learning models on the ability of problem solving and student physics Learning resultKeywords: Guided discovery, Problem solving abolities,Learning result
PENGEMBANGAN PETUNJUK PRAKTIKUM BIOLOGI DAN INSTRUMEN PENILAIAN KINERJA PRAKTIKUM BERBASIS MODEL PEMBELAJARAN KOOPERATIF DAN EFEKTIVITASNYA TERHADAP KEMAMPUAN BERPIKIR KRITIS SISWA SMA/MA KELAS XI Rahmadani, St.; -, Jamaluddin; Zulkifli, Lalu
Jurnal Penelitian Pendidikan IPA Vol 1, No 2 (2015): July
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (140.161 KB) | DOI: 10.29303/jppipa.v1i2.13

Abstract

The aims of this study were: 1) to develop a biology practical guidance based on TGT cooperative models equipped with practical performance assessment instrument; 2) to determine the characteristics and suitability of products than have been developed; 3) to know it’s effectiveness in critical  thinking abilities on biology subject of students in class XI. Product development process in this study by following Borg and Gall’s Development. The result of the expert validation by 3 validators showed that each of  the average score in biology practical guidance based on TGT and practical performance assessment instrument were 4,41 and 4,48 and categorized as “very good”. Limited testing conducted on 10 students with high, medium, and low ability. The result of limited testing showed that each of percentage score average in biology practical guidance based on TGT and practical performance assessment instrument were 82,67% and 83,33% and categorized as “very good”. Field trial testing using a pre-test post-test control group design. The data of critical  thinking abilities are tested in this study consist of 5 indicator skills:  (1) formulate the problem; (2) recognize the existence of a logical relationship between issues; (3) collect and collate information; (4) asses and evaluate the statement of facts; (5) Make some conclude were needed. Data analysis were performed  using two independent sample test formula by SPSS 20 for windows. The analysis showed that the critical  thinking abilities for indicator 1, 2, 3, and 5 of experimental group different from the control group, while the fourth indicator not different. Data analysis equipped with calculation of the value of n-gain to determine  the effectiveness of learning by using product that have been developed. The result of the data analysis showed that the value of n-gain in experimental groupis equal to 0,71 and categorized as “high”.
PENGARUH PENAMBAHAN ZAT PENGATUR TUMBUH BAP (BENZYL AMINO PURINE) DAN 2,4-D (2,4-DICHLOROPHENOXYACETICACID) TERHADAP PEMBENTUKAN PLANLET MELON (Cucumismelo) VARIETAS MAI119 Toharah, Nining Intan; Jekti, Dwi Soelistya Dyah; Zulkifli, Lalu
Bioscientist : Jurnal Ilmiah Biologi Vol 3, No 1
Publisher : Program Studi Pendidikan Biologi FPMIPA IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.06 KB)

Abstract

This study aims to determine the concentration of growth regulators BAP and 2,4-D which have the highest effect in stimulating the formation of shoots and roots melon plants (Cucumis melo) Mai 119 variety. The callus leaves of seedlings were used as a source explant. Completely randomized design (CRD) was used in this research. Media used on shoot induction was MS medium added with several concentration of BAP (0 mg/L, 1 mg/L, 2 mg/L, 3 mg/L) and 2,4-D (0 mg/L, 1 mg/L, 2 mg/L, 3 mg/L) either alone or in a combination of both. Media used in the formation of roots were MS medium added with 2,4-D at a several concentration of 0 mg/L, 1 mg/L, 2 mg/L, and 3 mg/L. Parameters measured were the time appearing of shoots, number of shoots, time appearing of roots, and the number of roots. Parameters measured were the time appearing of shoots and number of shoots using descriptive test. Anova followed by Tukey's test was used in the analyse time appearing of roots. In the parameter number of roots using Kruskal Wallis test followed by Mann-Whitney test. The results showed that there were differences in the effect of growth regulators on the shoots and roots formation. The fastest shoot induction was obtained in the media 3 mg/L BAP+1 mg/L 2,4-D with the highest number of shoots contained in the medium at a concentration of 3 mg/L BAP + 1 mg/L 2,4-D and 2 mg/L BAP+1 mg/L 2,4-D. The fastest root induction was obtained in media 0 mg/L 2,4-D, 1 mg/L 2,4-D, and 2 mg/L 2,4-D. The highest number of roots were obtained in media with 0 mg/L 2,4-D and 1 mg/L 2,4-D.
INDUKSI KALUS KACANG TANAH (Arachis hypogaea L.) VARIETAS KELINCI DENGAN PERLAKUAN 2,4-D DAN BAP Royani, Ida; Zulkifli, Lalu; Sedijani, Prapti
Jurnal Penelitian Pendidikan IPA Vol 1, No 2 (2015): July
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (143.459 KB) | DOI: 10.29303/jppipa.v1i2.21

Abstract

Callus induction determines the successfulness of micropropagation through somatic embryogenesis. This research was conducted to determine the effect of 2,4-D and BAP on callus induction of peanut (Kelinci strain). Callus induction was done on MS medium, with the observed variables were of initiation time, diameter, texture and color callus. Statistical analysis showed that 2,4-D and BAP affect the initiation time, diameter, texture and color callus. The earliest initiation of callus formation was obtained from MS medium with the addition of 4 mg/L 2,4-D. The diameter of the largest callus obtained from MS medium with the addition of 3 mg/L 2,4-D + 1 mg/L BAP. Callus color were affected by the treatment of 2,4-D and BAP, while callus texture was not affected by these treatmen, in which compact callus texture was not affected by these treatment, in which compact callus texture was observed in all treatments.Keywords: Induction of callus, 2,4-D, BAP, peanuts
AKTIVITAS ANTIBAKTERI EKSTRAK METANOL BATANG BIDARA LAUT (Strychnos ligustrina) TERHADAP BAKTERI PATOGEN Kurniawan, Edy; Dyah Jekti, Dwi Soelistya; Zulkifli, Lalu
Jurnal Biologi Tropis Jurnal Biologi Tropis Vol.19 No.1 Januari-Juni 2019
Publisher : Program Studi Pendidikan Biologi FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.933 KB) | DOI: 10.29303/jbt.v19i1.1040

Abstract

Abstract : Strychnos ligustrina stem has been empirically used by the people of West Nusa Tenggara and Bali in the treatment of malaria, tooth ache and diarrhea, but there is no scientific data that supports it. This study aims to determine and prove the antibacterial activity of Strychnos ligustrina methanol extract to pathogenic bacteria in vitro and in vivo. This research is an experimental study conducted by measuring the inhibition zone (mm) growth of pathogenic bacteria, determining minimum inhibitory concentration (MIC) and minimum killing concentration (MKC) in vitro, and determining the percentage of antibacterial activity of methanol extract of S. ligustrina stem in vivo. The experiment was conducted using 4 groups of concentrations of S. ligustrina stem methanol extract in an in vitro study of 25, 50, 75, and 100% with ciprofloxacin as a positive control and aquadest as a negative control. In vivo studies experiments were carried out using 6 treatment groups of test animals male mice Balb / c (Mus musculus). The in vitro test results showed that methanol extract of S. ligustrina stems was able to inhibit the growth of pathogenic bacteria with medium categories of clinical isolates of Staphylococcus aureus and categories of weaks to Klebsiella pneumonia and Escherichia coli isolates. The minimum inhibitory concentration (MIC) for S. aureus and K. pneumonia bacteria isolates was at a concentration of 25% while for E. coli isolates at a concentration of 30%. The methanol extract of the S. ligustrina stem has no killing power against the pathogenic bacteria tested. Antibacterial activity in vivo was able to inhibit the growth of S. aureus pathogenic bacteria by 6.60% (at 25% concentration), 8.62% (at 50% concentration), and 17.31% (at 100% concentration), against K. pneumonia was 11.85% (at 25% concentration), 51.21% (at 50% concentration), and 65.92% (at 100% concentration), against E. coliat 19.18% (at concentration 25%), 29.98% (at 50% concentration), and 40.88% (at 100% concentration). Methanol extract of S. ligustrina stem proved to have antibacterial activity in vitro and in vivo. Key words: Srychnos ligustrina, pathogenic bacteria, antibacterial, in vitro, in Vivo. Abstrak : Strychnos ligustrina secara empiris  telah digunakan oleh masyarakat Nusa Tenggara Barat dan Bali dalam pengobatan penyakit malaria, sakit gigi, dan diare, tetapi belum ada data ilmiah yang mendukung. Penelitian ini bertujuan untuk menentukan dan membuktikan aktivitas antibakteri ekstrak metanol batang bidara laut terhadap bakteri patogen secara in vitrodan in vivo. Penelitian ini merupakan penelitian eksperimental yang dilakukan dengan mengukur zona hambat (mm) pertumbuhan bakteri patogen, menentukan konsentrasi hambat minimum (KHM) dan konsentrasi bunuh minimum (KBM) secara in vitro, serta menentukan persentase aktivitas antibakteri ekstrak metanol batang bidara laut secara in vivo. Percobaan dilakukan menggunakan 4 kelompok konsentrasi ekstrak metanol batang bidara laut pada penelitian in vitro yaitu 25, 50, 75, dan 100% dengan ciprofloxacin sebagai kontrol positif serta aquadest sebagai kontrol negatif. Pada penelitian in vivo percobaan dilakukan menggunakan 6 kelompok perlakuan hewan uji mencit jantan galur Balb/c (Mus musculus). Hasil uji in vitro menunjukkan ekstrak metanol batang bidara laut mampu menghambat pertumbuhan bakteri patogen dengan kategori sedang terhadap Staphylococcus aureus isolat klinis dan kategori lemah terhadap Klebsiella pneumonia dan Escherichia coli isolat klinis. Nilai konsentrasi hambat minimum (KHM) untuk isolat bakteri S. aureus dan K. pneumoniae adalah pada konsentrasi 25% sedangkan untuk isolat E. coli pada konsentrasi 30%. Ekstrak metanol batang bidara laut tidak memiliki daya bunuh terhadap bakteri patogen yang diuji. Aktivitas antibakteri secara in vivo mampu menghambat pertumbuhan bakteri patogen S. aureus sebesar 6,60% (pada konsentrasi 25%), 8,62% (pada konsentrasi 50%), dan 17,31% (pada konsentrasi 100%), terhadap K. pneumonia sebesar 11,85% (pada konsentrasi 25%), 51,21% (pada konsentrasi 50%), dan 65,92% (pada konsentrasi 100%),   terhadap E. coli sebesar 19,18% (pada konsentrasi 25%), 29,98% (pada konsentrasi 50%), dan 40,88% (pada konsentrasi 100%). Ekstrak metanol batang bidara laut terbukti memiliki aktivitas antibakteri secara in vitro dan in vivo. Kata kunci: Srychnos ligustrina, bakteri patogen, antibakteri, in vitro, in vivo
ISOLASI, KARAKTERISASI DAN IDENTIFIKASI BAKTERI ENDOFIT KULIT BATANG SRIKAYA (ANNONA SQUAMOSA) DAN POTENSINYA SEBAGAI ANTIBAKTERI Zulkifli, Lalu; Jekti, Dwi Soelistya Dyah; Bahri, Samsul
Jurnal Penelitian Pendidikan IPA Vol 4, No 1 (2018): January
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v4i1.98

Abstract

The objective of this study was to isolate endophytic bacteria from bark of srikaya, analyzing antibacterial activity of endophytic bacteria in S. aureus, B. cereus and E. coli pathogenic bacteria, characterizing endophytic bacteria capable of inhibiting the growth of pathogenic bacteria and identification of endophytic bacteria able to inhibit the growth of pathogenic bacteria. Isolation of endophytic bacteria using TSA and NA media, bioassay on pathogen bacteria with concentration of 106 cells / ml with using Ø 6 mm wells and entering supernatant of 100 μl. Supernatant was obtained by growing endophytic bacteria in NB media shaken with shaker 150 cycles / min for 48 h at 32ᵒC then culture centrifuge at 5000 g for 30 min. Positive control using cyprofloxacin. Characterization is based on the nature of the colony, Gram paint, spore formation, and biochemical tests. The results of the study yielded 13 endophytic bacterial isolates and 4 endophytic isolates capable of inhibiting the growth of 8 pathogenic bacteria with sensitive criteria, 2 pathogenic bacteria with resistant criteria and 1 pathogen bacteria can not be inhibited its growth. Gram's paint results show that 4 endophytic isolates belong to Gram-positive, rod-shaped and spore forming cells. From the character possessed by the bacteria can be identified that the 4 bacteria endofit capable of inhibiting pathogenic bacteria are Bacillus brevis, Bacillus latesporus, Virgibacillus pantothenticus, and Bacillus circulansKeywords: Characterization, Endophytic Bacteria, Bark of Srikaya, Antibacterial
BAKTERI ENDOFIT KULIT BATANG TERAP (ARTOCARPUS ELASTICUS) DAN AKTIFITASNYA SEBAGAI ANTIBAKTERI -, Guplin; Jekti, Dwi Soelistya Dyah; Zulkifli, Lalu
Jurnal Penelitian Pendidikan IPA Vol 3, No 2 (2017): July
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (811.011 KB) | DOI: 10.29303/jppipa.v3i2.106

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This study aims to identify the types of endophytic bacteria on the bark of terap (Artocarpus elasticus) capable of inhibiting the growth of clinical isolate bacteria of Staphylococcus aureus, Escherichia coli, Salmonella typhi, and Pseudomonas aeruginosa. Stages of this study were (1) isolating the endophytic bacteria from the bark of terap plants (2) antibacterial test (inhibition test) against clinical isolate bacteria, (3) biochemical test upon endophytic isolate bacteria showing strong  inhibition effect, (4) moleculer identifcation upon endophytic bacteria isolate showing strong  inhibition effect. From this study, it was obtained 34 barks of terap isolates, and 12 isolates have inhibitory effect on S. aureus. Based on 16S rRNA   molecular identification, the isolate of endophytic bacteria of the barks were identified as Bacillus cereus, Bacillus subtilis and Bacillus amyloliquefaciens. Those  endophytic bacteria of Terap plants  are potentially  to be  developed as a the producer of antibacterial compounds.Keywords: Terap bark, Endophytic bacteria, Identification, Antibacteria
ANALISIS KEMAMPUAN PENDIDIK DALAM MENERAPKAN PENILAIAN AUTENTIK PADA MATA PELAJARAN BIOLOGI KELAS X IPA SMA DI KABUPATEN LOMBOK TIMUR Haqiqi, LL. Zainal; Ramdani, Agus; Zulkifli, Lalu
Jurnal Penelitian Pendidikan IPA Vol 4, No 1 (2018): January
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v4i1.60

Abstract

This study aims to know the abilities of the teachers in applying authentical assessment in biology at grade X IPA Senior High School of Lombok Timur district. This study using descriptive method which getting data in the verbal only not in numbers. Getting samples at 8 Senior High Schools of Lombok Timur district which aplicate kurikulum 2013 they are SMAN 1 Masbagik, SMAN 2 Aikmel, SMAN 1 Sikur, SMAN 1 Terara, SMAN 2 Selong, SMAN 1 Keruak, SMAN 1 Montong Gading and SMAN 1 Sakra. To these teachers of biology were given instruments which asked how the authentical assessment reseach done in the schools and the result were presented in this study. The ability of teachers in applying authentical assessment were different from every questions there are attitude, knowledge and skill. Attitude they are observations, self assessment, assessment among students, journal and interview were answered by teachers with yes 65,62% , knowledge were answered by teachers by yes 88,75% and skill were answered yes 87,75%. Ability of teachers in applying authentical assessment were answered yes as many as 78,75% and the next verbally answered by teachers because of the problems in applying authentical assessments. Constraintburden of teachers in design and applying authentical assessment were given 5 questions and the interview of the execution of authentical assessments were given about 91 questionsAutentical assessment, biology
PERTUMBUHAN KALUS DAUN MELON (Cucumis melo) VARIETAS MAI 119 DENGAN PEMBERIAN BAP (BENZYL AMINO PURINE) DAN 2,4-D (2,4 DICHLOROPHENOXYACETIC ACID) Toharah, Nining Intan; Jekti, Dwi Soelistya Dyah; Zulkifli, Lalu
Jurnal Penelitian Pendidikan IPA Vol 1, No 2 (2015): July
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (110.83 KB) | DOI: 10.29303/jppipa.v1i2.17

Abstract

This study aims to determine the concentration of growth regulators BAP and   2,4-D which have the highest effect in stimulating the formation of callus melon plants (Cucumis melo) Mai 119 variety. Completely randomized design (CRD) was used in this research. Media used on callus induction was MS medium with addition of several concentration of BAP  (0 mg/L, 1 mg/L, 2 mg/L, 3 mg/L) and 2,4-D (0 mg/L, 1 mg/L, 2 mg/L, 3 mg/L) either alone or in a combination of both. Parameters measured were the time appearing of callus, callus diameter, callus texture, and callus color. Anova followed by Tukey's test was used to the analyse of time appearing of callus. Data of callus diameter was analyzed using Kruskal Wallis test followed by Mann-Whitney test. In the analysis of parameter related to the callus texture and callus color, descriptive test were used. The results showed that there were differences in the effect of growth regulators on the callus formation. The fastest callus induction and the largest diameter of callus were obtained on media with concentration of 2 mg/L BAP and 3 mg/L BAP.Keywords: BAP (benzyl amino purine), 2,4-D (2,4-dichlorophenoxyacetic acid), callus induction, melon (Cucumis melo) varieties Mai 119
Pelatihan Pemeliharaan dan Penggunaan Drosophila Sebagai Bahan Praktikum Pada Guru Biologi SMA Di Lombok Barat Bahri, Syamsul; Sedijani, Prapti; Zulkifli, Lalu; Mertha, I Gde
Jurnal Pengabdian Magister Pendidikan IPA Vol 1, No 1 (2018): Desember
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (55.177 KB) | DOI: 10.29303/jpmpi.v1i1.216

Abstract

Abstrak: Kegiatan pengabdian pada masyarakat ini secara umum bertujuan memberi keterampilan kepada guru-guru Biologi SMA dalam memelihara hewan percobaan Drosophila, serta teknik-teknik dasar yang diperlukan dalam menggunakan hewan ini sebagai bahan percobaan pada pokok-pokok bahasan yang terkait dengan mekanisme pewarisan sifat. Kegiatan pelatihan ini dilaksanakan di SMAN 2 Labu Api dan diikuti oleh 23 orang peserta yang merupakan guru-guru Biologi SMA yang tergabung dalam MGMP Biologi Lombok Barat. Materi pelatihan meliputi Teknik Kultur Drosophila, Teknik Isolasi Betina Virgin, Teknik Menyilangkan mutan Drosophila, dan Teknik Mengatasi Kontaminasi Kultur. Hasil observasi menunjukkan bahwa dari 23 orang peserta pelatihan, 96% peserta belum pernah menggunakan Drosophila dalam praktikum, dan 100% peserta tidak memiliki keterampilan memelihara dan menggunakan Drosophila sebagai bahan praktikum di sekolah tempat mereka bertugas. Monitoring dan diskusi selama 10 hari pasca pelatihan menunjukkan bahwa hampir 74% peserta telah mampu melakukan dengan baik teknik-teknik dasar yang diperlukan dalam kultur Drosophila. Materi pelatihan tersulit yang dialami peserta adalah Teknik Mengatasi Kontaminasi Medium Kultur. Hingga 10 hari pasca pelatihan tidak seorang pun peserta melaporkan keberhasilan merekan dalam mengerjakan teknik ini. Meskipun demikian pelatihan ini berhasil karena sebagian besar materi pelatihan mampu dikerjakan dengan baik oleh mayoritas peserta pelatihan. Kata Kunci: pelatihan, kultur Drosophila