Niken Subekti
Department of Biology, FMIPA, Semarang State University, Indonesia

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PENERAPAN MODEL GI DAN PBL DENGAN LIMBAH BATIK SEBAGAI SUMBER BELAJAR TERHADAP HASIL BELAJAR DAN SIKAP PEDULI LINGKUNGAN Afiani, Hilda; Susilowati, Sri Mulyani Endang; Subekti, Niken
Journal of Biology Education Vol 6 No 1 (2017)
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v6i1.14061

Abstract

Penelitian ini bertujuan untuk mengetahui  perbedaan hasil belajar dan sikap peduli lingkungan pada penerapan model GI dan PBL sub materi pencemaran air dengan limbah batik cair sebagai sumber belajar di SMAN 1 Pekalongan. Penelitian  ini merupakan penelitian quasi eksperimen, dengan pola non-equivalent control group design. Sampel penelitian adalah kelas X MIPA 1 dan X MIPA 2. Uji hasil belajar siswa menunjukan rerata skor N-gain kelas eksperimen GI 0,53 lebih tinggi dari kelas eksperimen PBL 0,39. Hasil uji t skor N-gain diperoleh nilai signifikansi 0,014 lebih kecil dari 0,05 sehingga terdapat perbedaan hasil belajar yang signifikan antara kelas eksperimen GI dan kelas eksperimen PBL. Skor rerata sikap peduli lingkungan siswa kelas eksperimen GI sebesar 64,6 lebih besar dari kelas eksperimen PBL 60,9. Hasil uji t skor kepedulian siswa terhadap lingkungan diperoleh nilai Sig sebesar 0,008 lebih kecil dari 0,05, artinya ada perbedaan sikap peduli lingkungan yang signifikan antara kelas eksperimen GI dan eksperimen PBL. Hasil penelitian menunjukan bahwa terdapat perbedaan hasil belajar dan sikap peduli lingkungan yang signifikan pada penerapan model GI dan model PBL serta hasil belajar dan sikap peduli lingkungan lebih tinggi pada penerapan model GI dengan limbah batik cair sebagai sumber belajar di SMAN 1 Pekalongan. This study was aimed at knowing any differences of learning achievement and environmental awareness on the implementation of PBL and GI learning models in the sub material of water pollution by using Batik liquid waste as the learning source in SMA N 1 Pekalongan. Further, this study belongs to quasi experimental research by employing non-equivalent control group design. The samples of this study were class X MIPA 1 and X MIPA 2. After the treatments were given, the result of GI experimental class got 0.53 average point higher than PBI experimental class. Moreover, the t-test result on N-gain obtained significance value of 0.014 which was less than 0.05, for there was a significant difference of the learning achievement between those classes. Besides, the environmental awareness average score of GI experimental class was higher than PBL experimental class, namely 64.6 and 60.9. Accordingly, the t-test result of the environmental awareness score gained significance value of 0.008 which was less than 0.05, meaning that there was a significant difference of the environmental awareness between GI and PBL experimental classes. In conclusion, this study showed significant differences by having GIs scores higher than PBL in the learning achievement and environmental awareness.
EFEKTIVITAS PENERAPAN PEMBELAJARAN INKUIRI TERBIMBING BERBANTUAN BAHAN AJAR BERBASIS KONSEP MATERI VERTEBRATA Safufia, Ariza Naila; Priyono, Bambang; Subekti, Niken
Journal of Biology Education Vol 5 No 3 (2016)
Publisher : FMIPA UNNES

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Abstract

Penelitian ini bertujuan menganalisis efektivitas penerapan pembelajaran inkuiri terbimbing berbantuan bahan ajar berbasis konsep materi vertebrata terhadap hasil belajar di SMA Kesatrian 1 Semarang. Penelitian dilakukan dengan quasi experimental design. Sampel yang digunakan adalah kelas X MIA 6 (kelas kontrol) dan X MIA 3 (kelas eksperimen) yang diambil dengan teknik purposive sampling. Hasil penelitian menunjukan rata-rata ketuntasan klasikal siswa kelas eksperimen mencapai 83,3% sedangkan kelas kontrol 55,5%. Berdasarkan analisis data aktivitas siswa aspek afektif siswa kelas eksperimen (81,09%) lebih baik daripada kelas kontrol (61,2%). Analisis aspek psikomotorik siswa kelas eksperimen lebih baik daripada kelas kontrol dengan persentase kriteria sangat baik sebesar 92,2%, sedangkan kelas kontrol diperoleh kriteria sangat baik sebesar 84,5%. Hasil analisis uji menunjukkan thitung 8,114> ttabel 1,994 dengan taraf signifikan 0,05 sehingga terlihat adanya perbedaan peningkatan hasil belajar kedua kelas. Hasil rata-rata angket tanggapan siswa setelah mengikuti pembelajaran dengan kriteria baik sebesar 77,4% dan 88,2% siswa mengatakan terlaksana dengan sangat baik. Secara umum guru dan siswa memberikan tanggapan sangat baik terhadap pembelajaran yang diterapkan. Simpulan dari penelitian ini adalah penerapan pembelajaran inkuiri terbimbing berbantuan bahan ajar berbasis konsep efektif diterapkan pada materi vertebrata siswa kelas X MIA SMA Kesatrian 1 Semarang. The aim of this research was to analyze the effectiveness of implementation of guided inquiry learning aided teaching materials based on the concept of vertebrate material to the learning outcome at SMA Kesatrian 1 Semarang. The research was done by quasi experimental design. The samples was X MIA 6 class as the control group and X MIA 3 class as the experimental group which taken by purposive sampling technique. The result showed that the classical completeness average of the experimental group was 83,3%, while the control group was 55,5%. Data analysis on affective aspects in the experimental group was better than the control group. The analysis of the psychomotor aspects of the experimental group was better than the control group. T-test showed that both classes were significantly different. The average of the students questionnaire responses after joining the learning was in good criteria. Generally the teacher and the students also gave good responses in the implementation of the learning. It can be concluded that implementation of guided inquiry learning aided teaching materials based on the concept was effective to be implemented in the vertebrate material for tenth graders of X MIA in SMA Kesatrian 1 Semarang.
PENGARUH MODEL PROBLEM BASED LEARNING DENGAN MEDIA ANIMASI FLASH TERHADAP HASIL BELAJAR DAN AKTIVITAS SISWA Kinaseh, -; Subekti, Niken; Pribadi, Tyas Agung
Journal of Biology Education Vol 4 No 3 (2015)
Publisher : Journal of Biology Education

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Abstract

Pembelajaran biologi selain mempelajari konsep juga memecahkan masalah kehidupan nyata dengan mengaitkan konsep yang ada. Konsep biologi yang bersifat abstrak apabila disampaikan dengan pendekatan pembelajaran yang kurang tepat maka akan menyebabkan rendahnya hasil belajar.  Penelitian ini bertujuan untuk mengetahui pengaruh model Probem Based Learning dengan media animasi flash terhadap hasil belajar dan aktivitas siswa. Penelitian ini merupakan penelitian Quasi Experiment dengan bentuk Pretest-Posttest Control Group Design dengan populasi seluruh siswa kelas XI IPA SMA Negeri 1 Kragan (133 siswa). Sampel dalam penelitian adalah kelas XI IPA 1 sebagai kelas eksperimen dan XI IPA 3 sebagai kelas kontrol yang diperoleh dengan teknik Cluster Random Sampling. Instrumen yang digunakan untuk mengetahui hasil belajar adalah soal pilihan ganda, sedangkan aktivitas siswa menggunakan lembar observasi. Data dianalisis dengan uji t, uji n-gain dan uji regresi linier sederhana. Hasil penelitian menunjukkan perbedaan yang nyata dari kedua kelas (thitung > ttabel). Uji n-gain menunjukkan bahwa siswakelas eksperimen memiliki n-gain74,29% pada kategori tinggi dan 25,71% pada kategori sedang. Uji regresi linier sederhana menunjukkan aktivitas siswa berpengaruh terhadap hasil belajar siswa (nilai sig.<0,05, r kuadrat 0,759). Aktivitas siswa kelas eksperimen 82,86% siswa dalam kategori aktif sampai sangat aktif sedangkan kelas kontrol 67,64%. Simpulan dari penelitian ini adalah model PBL dengan media animasi flash berpengaruh nyata terhadap hasil belajar dan aktivitas siswa.  Learning biology is beside to studying the concept it is also a form of solving real-life problems by linking existing concepts. Biological concept is an abstract if it is submitted to the lack of proper learning approach will lead to poor learning outcomes. This researh aimed to determine the effect probem based learning models with flash animation media on learning outcomes and student activity. This research is a Quasi Experiment with pretest-posttest control group design with the entire population of students of class XI IPA SMAN 1 Kragan (133 students). Samples are a class ofXI IPA 1 as an experimental class and class of XI IPA 3 as the control obtained with cluster random sampling technique. The instruments used to determine the learning outcomes are multiple choice questions, while the student activity using observation sheet. Data were analyzed by t-test, n-gain and simple linear regression. The results showed significant differences from both classes (t_count>t_table). N-gain test showed that student’s experimen class has n-gain 74.29% in the high category and 25.71% in the medium category. Simple linear regression showed student activity influence on student learning outcomes (sig. <0.05, r squared 0.759). Activity graders experiment 82.86% of the students in the category of active to very active while the control group 67.64%. Conclusions from this research is Problem Based Learning with flash animation media have real impact on learning outcomes and student activity.
PENGEMBANGAN BUKU SUPLEMEN IPA TERPADU DENGAN TEMA PENDENGARAN KELAS VIII Kurniasari, Dwi Astuti Dian; Rusilowati, Ani; Subekti, Niken
Unnes Science Education Journal Vol 3 No 2 (2014): July 2014
Publisher : Unnes Science Education Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/usej.v3i2.3329

Abstract

Penelitian ini bertujuan untuk mengembangkan buku suplemen IPA terpadu, mengetahui kevalidan, kepraktisan dan kefektifan buku suplemen IPA terpadu dengan tema Pendengaran. Penelitian ini dilakukan dengan pendekatan Research and development. Hasil penelitian menunjukkan bahwa buku suplemen IPA terpadu dengan tema pendengaran dinyatakan valid dengan hasil validasi pakar rata-rata sebesar 3,40. Berdasarkan hasil tanggapan siswa mengenai kepraktisan buku suplemen pada uji coba skala kecil dan skala besar buku suplemen IPA terpadu termasuk dalam kriteria praktis dengan sedikit revisi. Hasil belajar kelas VIII D SMP Ya BAKKI 1 Kesugihan dari 30 siswa didapatkan ketuntasan klasikal siswa sebesar 97% dengan hasil rata-rata nilai akhir siswa adalah 75 serta rata-rata hasil N-Gain adalah 0,34 yang menunjukkan bahwa buku suplemen efektif dijadikan sebagai pendamping buku teks utama. Kesimpulan dalam penelitian ini adalah buku suplemen yang dikembangkan efektif dan praktis dijadikan sebagai pendamping buku teks utama. Buku suplemen yang dikembangkan akan lebih sempurna jika beberapa saran yang ada dapat diperbaiki lebih lanjut dan penelitian ini hendaknya dapat diteruskan oleh peneliti selanjutnya dengan kelas, sekolah, dan materi yang berbeda. This study aims to determine the validity, practicability and effectiveness of integrated supplement books with the theme of Hearing. The research was carried out by Research and development approach. The results showed that the integrated science supplement books with themes hearing declared invalid by the results of expert validation by an average of 3.40. Based on the results of student responses regarding the practicality of the book supplements on a small scale trial and a large scale integrated science book supplements are included in the practical criteria with slight revisions. Learning outcomes junior class VIII D Ya BAKKI 1 Kesugihan of 30 students obtained classical completeness students by 97% with an average yield of final grades of students is 75 and the average results of N-Gain is 0.34 which indicates that the book be used as an effective supplement The main textbook companion. The conclusion of this study is an effective supplement guide developed and practically used as a companion to the main textbook. Book supplements are developed to be more perfect if there are some suggestions that can be further improved and this research should be continued by further research with classroom, school, and different materials.
The Contextual Learning with Handout and Arthropod’s Preservation of High School Students Learning Outcomes Oktaviani, Putri; Subekti, Niken; Lisdiana, Lisdiana
Journal of Biology Education Vol 7 No 1 (2018): April 2018
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v7i1.21957

Abstract

The aim of the research is to determine the effectiveness of contextual learning with Handout and Arthropod’s preservation of high school students learning outcomes. The research was conducted at SMA N 1 Bulu Sukoharjo  Regency with research method by Pre-Experimental Design. The sample was X IA 1 and X IA 4 which taken by purposive sampling technique. The results showed that there was an influence on the results of psycomotor learning in the category very effective with percentage reach 85,94%, while the results of cognitive learning is in the category less effective with percentage 48%. The average of the students questionnaire responses after joining the learning was in very good criteria. Generally, the teacher and the students also gave good responses on the implementation of the learning. The conclusion of the research is the application of contextual learning with Handout and preserved Arthropod’s not yet effectively applied in learning.
Keanekaragaman Genetik Rayap Tanah Genus Coptotermes (Isoptera: Rhinotermitidae) di Pulau Jawa Subekti, Niken; Nandika, Dodi; Solihin, Dedy Duryadi
Majalah Ilmiah Biologi BIOSFERA: A Scientific Journal Vol 23, No 2 (2006)
Publisher : Fakultas Biologi | Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.mib.2006.23.2.156

Abstract

Subterranean termite Coptotermes spp. has been known as the most economically important structural pest in Indonesia. Due to morphological ambiguity, traditional identification of Coptotermes spp. has always been difficult and unreliable.  Through molecular diagnostic method, a study was conducted to determine genetic variation of Coptotermes spp. occurring in Java Island.  Termite specimens were collected from Banten 1, Banten 2, DKI 1, DKI 2, Jabar 1, Jabar 2, Jateng 1, Jateng 2, Yogya 1, Yogya 2, Jatim 1, and Jatim 2.  The method for identification was PCR-Restriction Fragment Length Polymorphism (PCR-RFLP) analysis using four restriction enzymes each of which was applied to CO II amplicon for all the Coptotermes spp. being analyzed.  The results showed the existence of two species of Coptotermes in Java which are different from both Coptotermes gestroi and Coptotermes formosanus.
Karakteristik Populasi Rayap Tanah Coptotermes spp (Blattodea: Rhinotermitidae) dan Dampak Serangannya Subekti, Niken
Biosaintifika: Journal of Biology & Biology Education Vol 2, No 2 (2010): September 2010
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v2i2.1158

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Termite are known to infest building in the tropics, but in their quest for cellulose they may also cause signifi cant damage to crops and trees. They become pest only when their natural habitat is altered in some way by humans. Subterranean termite Coptotermes spp has been known as the most economically important structural pest in Indonesia. Due tomorphological ambiguity, traditional identifi cation of Coptotermes spp. has always been diffi cult and unreliable. In economic point of view, economic loss due to termite attack always increases every year, and in the year 2000 it is estimated to reach 373 million US$. Moreover, the social as well as ecological impact caused by termite attack should also be considered. In the capital city of Jakarta, the subterranean termite attack on home buildings reaches around 55%; while in Surabaya (East Java) 36%; and in Semarang (Central Java) 41%. Meanwhile, in some other cities, the subterranean termite attack on home buildings reaches on the average of 20%. The presence of termites in a region can depend on various factors, such as soil and vegetation type. Climatic features andwater avaibility play an important part in termite survival. Daily and seasonal changes in these factors also affect termite distribution.Keywords: characteristics, climatic, Coptotermes spp, attack impact.
Biodiversity of Termites and Damage Building in Semarang, Indonesia Subekti, Niken; Priyono, Bambang; Aisyah, Afrin Nur
Biosaintifika: Journal of Biology & Biology Education Vol 10, No 1 (2018): April 2018
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v10i1.12832

Abstract

Termites cause a lot of damage and big losses for building components, especially those made of wood. High population growth and rapid infrastructure development in Semarang city affect the natural habitats of termites. This phenomenon changes the termites behavior of foraging in buildings. Semarang city has humidity, temperature, and altitude that allows termites to live and breed well. The purpose of this study was to determine the types of termites living in housing in Semarang city as well as the level of attacks on housing. This research was conducted in nine housing in Semarang City. The research was carried out with two methods: building inspection and wood-feeding method by using Pinus mercusii wood measures 2 cm x 2 cm x 46 cm. The results found four types of termites that attack wood feeds namely Macrotermes gilvus, Microtermes inspiratus, Odontotermes javanicus, Coptotermes curvignathus and Cryptotermes sp.. Based on interviews and building inspection, it was known that the condition of the building in the category of "moderate" was occupying the most position (74.44%), good (17.78%) and lightly damaged (7.78%). From the causes of damage to building components, it can be concluded that the level of termite attack against damage to recidential buildings in Semarang city 44.58%. Cross-tabulation analysis of Chi-Square shows that there is a correlation between age and treatment with damage to the building. Futher, the finding can be used as baseline information for further scientific investigation for effective termites control on residential building components.
The Potential of Microbial Symbionts Macrotermes gilvus Hagen Termite Gut as Degrading Agents of Cellulose in Bioethanol Production Susilowati, Dewi; Subekti, Niken; Bintari, Siti Harnina
Biosaintifika: Journal of Biology & Biology Education Vol 10, No 2 (2018): August 2018
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v10i2.14965

Abstract

Water hyacinth is a potential feedstock for bioethanol production because of their high cellulose. The microbial symbionts of the Macrotermes gilvus termite’s gut have a high endoglucanase enzyme activity. This research was aimed to analyze the pH, temperature and agitation effects towards cell density, endoglucanase enzyme activity and reducing sugar, and to determine the effective optimum condition that can produce maximum reducing sugar. This research used central composite design (CCD) with the total number of run was . The independent variables were including pH (5.9, 6.4, 7.0, 7.6, 8.0), temperature (30 0C, 33 0C, 37 0C, 41 0C, 44 0C) and agitation (90 rpm,114 rpm, 150 rpm,185 rpm, 210 rpm), with six replications at central points. Parameters measured were cell density, endoglukanase enzyme activity and reducing sugar, thus analyzed by the statistical software package MINITAB 18.0. The Student’s t-test result showed the primary sequence influencing cell density as pH ˃ agitation ˃ temperature and towards endoglucanase enzyme activity and reducing sugar as pH ˃ temperature ˃ agitation, P ˂ 0.05. The maximum reducing sugar (60.13 ± 3.16 mmolL-1) was obtained at pH 6.95, temperature 37 0C and agitation 150 rpm. The results of this research can be used to explore the more potential microbial symbionts of the Macrotermes gilvus Hagen termite’s gut.
KETERTARIKAN LALAT BUAH BACTROCERA PADA EKSTRAK OLAHAN LIMBAH KAKAO BERPENGAWET Indriyanti, Dyah Rini; Subekti, Niken; -, Latifah
Biosaintifika: Journal of Biology & Biology Education Vol 4, No 2 (2012): September 2012
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v4i2.2272

Abstract

Lalat buah Bactrocera spp. (Diptera: Tephritidae) merupakan salah satu hama pen ting menyerang tanaman buah-buahan dan sayuran. B. carambolae di laboratorium tertarik pada olahan limbah kakao. Hasil uji coba di lapangan belum memuaskan karena olahan limbah kakao mudah rusak. Tujuan penelitian ini mengkaji respon lalat buah Bactrocera yang diberi umpan ekstrak olahan limbah kakao berpenga wet. Pengawet yang digunakan yakni: Natrium klorida (NaCl), Natrium benzoat (C7H5NaO2) dan Potasium sorbat (C6H7KO2). Konsentrasi yang dipakai masing-masing pengawet 0,1%; 0,2% dan 0,3%. Pengamatan dilakukan selama satu ming gu. Hasil pengamatan menunjukkan bahwa daya tahan limbah yang diberi penga wet dan yang tidak dilihat secara secara fisik (warna dan tekstur) tidak berbeda nyata, namun ada perbedaan bau. Limbah yang tidak diberi pengawet ada kecen derungan baunya tidak sedap dibanding yang diberi pengawet. Hal ini yang mempengaruhi ketertarikan lalat terhadap olahan limbah kakao. Respon ketertarikan lalat Bactrocera terhadap olahan limbah kakao yang diberi pengawet berbeda antara satu dengan yang lain. Respon ketertarikan tertinggi Bactrocera cenderung pada olahan limbah kakao yang diberi pengawet Natrium klorida 0,3%, Potasium sorbat 0,2% dan Natrium benzoat 0,1%.The fruit fly Bactrocera spp. (Diptera: Tephritidae) is one of the important pests attacking crops of fruits and vegetables. In the laboratory, B. carambolae was attracted by the processed cocoa waste. The results of field trials have not been satisfactory yet, because the processed cocoa waste was easily damaged. The purpose of the study wast to examine the response of Bactrocera to the bait made of processed cocoa extract waste containing preservatives. The preservatives used were: Sodium chloride (NaCl), sodium benzoate (C7H5NaO2) and potassium sorbate (C6H7KO2). The concentration of each preservative was 0.1%; 0.2% and 0.3%. A one-week observation was made. The result showed that there was no significant difference on the durability of the preserved waste and the non-preserved waste. This can be seen from the physical properties (color and texture). However, there was difference in odor. The non-preserved waste tended to produce unpleasant smell than the preserved waste. This odor affected the capability to attract the flies to the processed cocoa waste. The Bactrocera was highly responsive to the waste containing preservative 0.3% sodium chloride, followed by 0.2% potassium sorbate and 0.1% sodium benzoate.