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Journal of Biology Education
ISSN : 2540833X     EISSN : 22526579     DOI : -
Core Subject : Science, Education,
Journal of Biology Education [e-ISSN 2540-833X | p-ISSN 2252-6579 | DOI 10.15294/jbe | DOAJ toc/2252-6579 | Department of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang] publishes research articles and conceptual analysis of philosophy, education theory, biology education research, instrument of biology learning tools, biology of learning media, biological experiments developing, and evaluation of biology learning.
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Articles 30 Documents
Search results for , issue "Vol 6 No 2 (2017)" : 30 Documents clear
Effectiveness of Environmental Exploration Learning (Jas) Approach Assisted by Education Card Malinda, Annisa Lintang; HB, F Putut Marin; Rahayuningsih, Margareta
Journal of Biology Education Vol 6 No 2 (2017)
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v6i2.19317

Abstract

This study would analyze the effectiveness of JAS learning with media education card of biodiversity onbiology learning outcome of students at SMAN 1 Limbangan. This is a Quasi-Experimental study byNonequivalent Control Group Design. The population in this study were six classes’ students of grade Xin the odd semester of 2016/2017 academic year. The sample was taken by purposive sampling, X 5 andX 6 as experimental classes and X 2 as the control class. The results of the analysis showed the average ofcognitive learning outcomes in experimental class is 85,42 with learning completeness of 91,89%, whilethe control class is 70.7 with learning completeness of 26.47%. Psychomotor learning outcome ofexperimental classes is 82,43. Affective learning outcome of the experimental class is 74,32. In general,teachers and students also responded very well to apply learning. This study concludes that the NaturalExploration Learning (Jelajah Alam sekitar / JAS, Indonesia) model with the education card is effectivefor learning outcomes of students at SMAN 1 Limbangan.
The Development Of Contextual Teaching and Learning Based-Video on Reproductive System Concept for SMA Erlianti, Susi; Widiyaningrum, Priyantini; Lisdiana, Lisdiana
Journal of Biology Education Vol 6 No 2 (2017)
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v6i2.19318

Abstract

Learning video is proven to increase students learning experiences. The contextual approachrelates learning materials with the situation around the students and encourages them to apply theirknowledge. The reproductive system concept is closely related to the real life. This research would developa valid, feasible and effective learning video based on Contextual Teaching and Learning. The researchwas conducted in SMA Negeri 2 Rembang. Subjects in this research were 83 students. The resultsshowed validation scores by media experts and content experts are 83.33% and 91.67% with very validcriteria. The Results of teacher and student responses showed average scores of 93.75% and 86%respectively with very good criteria. The result of analysis on students cognitive learning of class XISCIENCES 1 and XI SCIENCES 3 gives average N-gain of 0.63 with moderate criteria. Assessment ofstudents’ attitude of class XI SCIENCES 1 and XI SCIENCES 3 obtained an average score of 95,07%in very high criteria. It can be concluded that the learning video based on Contextual Teaching andLearning on the reproduction system concept developed has been valid, feasible and effectively applied tothe learning of grade XI SMA Negeri 2 Rembang.
Biological Science Curriculum Study 5e Instructional Model dengan Pendekatan Jelajah Alam Sekitar terhadap Kemampuan Literasi Sains Santoso, Agung Budi; Alimah, Siti; Utami, Nur Rahayu
Journal of Biology Education Vol 6 No 2 (2017)
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v6i2.19320

Abstract

Tujuan dari penelitian ini untuk mengetahui pengaruh dan menganalisis kontribusi BSCS5E Instructional Model dengan pendekatan JAS terhadap kemampuan literasi sains siswa. Metodepenelitian yang digunakan adalah quasi experimental design dengan desain penelitian pretestt-posttestcontrol group design, sedangkan teknik analisis data menggunakan uji regresi linear sederhana.Populasi penelitian ini adalah siswa SMP Negeri 1 Boja kelas VIII tahun pelajaran 2016/2017dengan sampel kelas VIII B dan VIII D yang diambil secara purposive sampling. Instrumen tesdigunakan untuk mengukur kemampuan literasi sains, sedangkan tingkat keterlaksanaan sintaksBSCS 5E Instructional Model dengan pendekatan JAS diukur menggunakan angket. Berdasarkananalisis data yang telah dilakukan, diperoleh persamaan regresi Ŷ=48,421X + 0,354, koefisienkorelasi antara BSCS 5E Instructional Model dengan pendekatan JAS dengan kemampuan literasi sainssiswa sebesar 0,572 dan koefisien determinasi 0,328. Hasil penelitian menunjukkan bahwa BSCS 5EInstructional Model dengan pendekatan JAS berpengaruh signifikan terhadap kemampuan literasisains siswa kelas VIII SMP Negeri 1 Boja Kendal dan BSCS 5E Instructional Model denganpendekatan JAS memiliki pengaruh terhadap kemampuan literasi sains siswa kelas VIII SMP Negeri1 Boja Kendal sebesar 32,8%. The purpose of this study to determine the effect and analyze the contribution of the BSCS 5EInstructional Model with JAS approach towards students' science literacy skills. The method used is a quasiexperimentaldesign with pretestt-posttest control group design, whereas the data analysis techniques using simplelinear regression test. This study population are students of SMP Negeri 1 Boja class VIII school year 2016/2017with a sample class VIII B and VIII D were taken by purposive sampling. The test instrument used to measurethe ability of science literacy, while the level of adherence to the syntax of the BSCS 5E Instructional Model withJAS approach is measured using a questionnaire. Based on data analysis that has been done, regression equationY = 48,421X + 0.354, the correlation coefficient between the BSCS 5E Instructional Model with JAS approachwith students' science literacy skills amounted to 0.572 and the determination coefficient is 0.328. The resultsshowed that the BSCS 5E Instructional Model with the approach JAS significant effect on the ability of scienceliteracy class VIII SMP Negeri 1 Boja Kendal and BSCS 5E Instructional Model with the approach of JAS havean impact on the ability of science literacy class VIII SMP Negeri 1 Boja Kendal about 32, 8%.
Keefektifan Project Based Learning dengan Observasi pada Materi Keanekaragaman Tumbuhan Tingkat Tinggi Indarti, Indarti; Purwantoyo, Eling
Journal of Biology Education Vol 6 No 2 (2017)
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v6i2.19321

Abstract

Model Project Based Learning (PjBL) dengan metode observasi dapat menciptakan kondisipembelajaran yang aktif, memberikan pengalaman nyata sehingga pembelajaran menyenangkandan meningkatkan aktivitas dan hasil belajar. Peningkatan tersebut dapat diperoleh denganmengajarkan peserta didik untuk mengenal masalah, merumuskan masalah, mencari solusi danmenguji jawaban sementara atas sebuah masalah dengan melakukan penyelidikan yang ada dilapangan. Penelitian ini bertujuan untuk menguji keefektifan Project Based Learning denganmetode observasi pada materi keanekaragaman tumbuhan tingkat tinggi di SMA Negeri 1Bergas. Penelitian ini merupakan penelitian Pre Experimental Design dengan pola One Shot Case.Populasi dalam penelitian ini adalah seluruh kelas X SMA Negeri 1 Bergas tahun ajaran2015/2016. Sampel dalam penelitian ini adalah kelas X1, X2 dan X3 sebagai kelas eksperimenyang diambil secara Purposive Sampling. Hasil penelitian menunjukkan bahwa kelas X1, X2, X3mencapai ketuntasan klasikal secara berurutan 87,5%, 87,5% dan 89,2%. Pembelajaran berbasisproyek dengan metode observasi yang meman faatkan lingkungan sekolah dapat membuat siswatertarik dan lebih aktif. Simpulan dari penelitian ini bahwa PjBL efektif untuk meningkatkanaktivitas dan hasil belajar siswa pada materi Keanekaragaman Tumbuhan Tingkat Tinggi diSMA Negeri 1 Bergas. Project-based learning (PjBL) with observation could raise the active learning, provide a realexperience so as learning would be joyful and give better learning outcomes. The improvement ofactivities and learning outcomes could be obtained by teaching students to identify problems,formulate problems, find a solution and test a hypothesis on specific problems by a field investigation.The study aimed to examine the effect of observation method to students’ activity and students’learning outcomes in the Plant Diversity concept at SMAN 1 Bergas. This study was a One Shot Casestudy by pre-experimental design. The population was the entire class of grade X at SMAN 1 Bergasin academic year 2015/2016. The samples were X1, X2 and X3 as experimental classes. It was foundthat three experimental classes reached classical completeness of 87,5% for X1, 87,5% for X2 and89,2% for X3. PjBL with observation method which utilizes environmental surrounding could raisestudents’ activities. It was concluded that the observation method could improve high school students’activity and their learning outcomes at the concept of Plant Diversity.
Kontribusi Tingkat Rasa Ingin Tahu terhadap Kualitas Aktivitas Siswa dalam Pembelajaran Respirasi Berbasis Pendekatan Saintifik Yasin, Ahmad Alfian Risydan; Marianti, Aditya; Rudyatmi, Ely
Journal of Biology Education Vol 6 No 2 (2017)
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v6i2.19322

Abstract

Tujuan penelitian ini untuk mengetahui kontribusi tingkat rasa ingin tahu terhadapkualitas aktivitas siswa dalam pembelajaran respirasi berbasis pendekatan saintifik. Penelitian initelah dilakukan di SMA N 1 Kudus dengan menggunakan metode kombinasi explanatory sequentialdesign. Sumber data penelitian ini yaitu 119 siswa kelas XI yang diambil dengan random sampling dan15 siswa darinya yang dipilih dengan purposive sampling. Data rasa ingin tahu siswa diperoleh denganmetode angket, sedangkan data aktivitas siswa dalam pembelajaran respirasi berbasis pendekatansaintifik diperoleh dengan metode angket dan wawancara. Data dianalisis kuantitatif menggunakanteknik deskriptif persentase dan uji regresi, serta dianalisis kualitatif menggunakan teknik Miles danHuberman. Hasil penelitian menunjukkan rasa ingin tahu berkontribusi positif sebesar 67,3%terhadap aktivitas siswa dalam pembelajaran respirasi berbasis pendekatan saintifik. Hasilwawancara memperkuat bahwa tingkat rasa ingin tahu yang berbeda berpengaruh terhadap kualitasaktivitas mengamati, menanya, mengumpulkan informasi/mencoba, menalar, dan mengkomunikasiyang berbeda pula. This study aimed to know the contribution of curiosity level toward the quality of students’ activity inscientific approach based-respiration learning. This study has been conducted at SMA N 1 Kudus by using mixedmethod: explanatory sequential design. The prime resources of this research were 119 students of grade XI takenby random sampling and 15 students from the first sampling were selected by purposive sampling. Data ofstudents’ curiosity were obtained by questionnaire, while students’ activity in scientific approach based-respirationlearning were obtained by questionnaire and interview. Data were analyzed quantitatively using percentagedescriptive technique and regression test, and analyzed qualitatively using Miles and Huberman technique. Theresults showed that curiosity contributed positively to students’ activity in scientific approach based-respirationlearning up to 67.3%. The interview results confirmed that the different level students’s curiosity affects to thequality of observing, asking, gathering information/experimenting, associating, and communicating activitywhich were also different.
Penerapan Pendekatan Science, Environment, Technology, and Society (Sets) Berbantuan Mind Mapping Materi Sistem Reproduksi Manusia Wijayanti, Rizki Andita; Indriyanti, Dyah Rini; Harini, Nugrahaningsih Wahyu
Journal of Biology Education Vol 6 No 2 (2017)
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v6i2.19323

Abstract

Penelitian ini bertujuan untuk menguji pengaruh penerapan pendekatan Science, Environment,Technology, and Society (SETS) berbantu mind mapping pada materi sistem reproduksi manusiaterhadap hasil belajar siswa. Penelitian ini menggunakan rancangan Quasi Experimental Design denganmenggunakan pola pretest-postest control group design. Populasi dalam penelitian ini adalah seluruhsiswa kelas XI IPA SMA Negeri 1 Bawang, sedangkan sampel dalam penelitian ini adalah siswa kelasXI IPA 5 (kelas kontrol) dan XI IPA 6 (kelas eksperimen). Data keterlaksanaan pendekatan SETSberbantu mind mapping diperoleh melalui angket keterlaksanaan pembelajaran oleh siswa. Data hasilbelajar dalam ranah kognitif siswa diperoleh dari tes materi sistem reproduksi manusia, ranahpsikomotorik dan ranah afektif diperoleh melalui lembar observasi. Data hasil belajar kognitif kelaseksperimen 31,43% siswa mencapai N-Gain kriteria tinggi, 65,72% kriteria sedang dan 2,85% kriteriar endah. Pada kelas kontrol 13,88% termasuk dalam N-Gain kriteria tinggi, 77,78% dengan kriteriasedang dan 8,34 dengan kriteria rendah. Hasil uji t menunjukkan thitung 3,43 > ttabel 1,99, hal inimenunjukkan ada perbedaan signifikan antara kelas kontrol dengan kelas eksperimen. Uji korelasibiserial diperoleh 0,44 yang menunjukkan adanya korelasi dengan taraf sedang dengan angka besarnyakonstribusi pendekatan SETS berbantu mind mapping sebesar 19,7 %. This final project aims at examining the influence of applying an approach of Science, Environment,Technology, and Society (SETS) assisted by mind mapping on the human reproductive system materialtoward the students learning outcomes. This study used Quasi Experimental Design with the pretestposttestcontrol group design. The population of this study was the students of XI IPA SMAN 1 Bawang,while the sample was the students of XI IPA 5 (control class) and XI IPA 6 (experimental class). Thedata collection of SETS approach assisted by mind mapping was obtained by a questionnaire about thelearning of the students. The result of the study in students' cognitive domain was obtained by the testabout the human reproductive system, while the students’ psychomotor and affective domain wasobtained by the observation sheets. The result of the study in students’ cognitive domain of experimentclass 31,4% reach out for N-Gain high criteria, 65,72% moderate criteria, and 2,85% for low criteria.In the control group 13.88% included in the N-Gain high criteria, with the moderate criteria 77.78%and 8.34% with low criteria. T test results showed tcount 3.43> 1.99 t table, it showed significantdifference between control and experimental class. Biserial correlation test showed 0.44 indicatingmoderate correlation with the magnitude of the contribution figures SETS assisted mind mappingapproach was 19.7%..
Meta-Analisis Penerapan Pendekatan Jas Hasil Penelitian Mahasiswa S1 Pendidikan Biologi Universitas Negeri Semarang Khasanah, Khuswatun; Iswari, Retno Sri; Martuti, Nana Kariada Tri
Journal of Biology Education Vol 6 No 2 (2017)
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v6i2.19324

Abstract

Pendekatan Jelajah Alam Sekitar (JAS) merupakan pendekatan yang dikembangkan oleh dosenPendidikan Biologi Universitas Negeri Semarang dalam rangka meningkatkan kualitas pembelajaranbiologi. Berdasarkan database perpustakaan Biologi Unnes tahun 2011-2015 ditemukan sebanyak 25skripsi yang meneliti penerapan pendekatan JAS. Penelitian ini bertujuan menganalisis penerapanpendekatan JAS pada hasil penelitian yang dilakukan oleh mahasiswa S1 Pendidikan BiologiUniversitas Negeri Semarang tahun 2011-2015. Meta-analisis ini termasuk penelitian kualitatif dengandesain penelitian expost de facto. Kesimpulan dari penelitian ini adalah skripsi JAS yang dihasilkan olehmahasiswa S1 Pendidikan Biologi Unnes didominasi oleh materi ajar lingkungan, lebih banyakdilakukan pada tahun 2011-2012, didominasi oleh metode penelitian eksperimen, dan hasil penelitianberorientasi pada pengaruh JAS terhadap hasil belajar kognitif. Selain itu, diketahui bahwa skripsisudah memenuhi komponen penyusun JAS serta dari hasil penelitian ditemukan beberapa kelebihandan kekurangan pendekatan JAS. Natural Environment Exploration approach is an approach that was developed by Biology Education’s lecturer ofSemarang State University to improve the quality of teaching biology. Based on Biology UNNES’ library databasein 2011-2012, it was found as many as 25 thesis examined the application of JAS approach. This study aimed toanalyze the implementation of the JAS approach to the results of research conducted by the undergraduate studentsof Biology Education Semarang State University around 2011-2015. This study is a meta-analysis includingqualitative research study with expost de facto design. The conclusion of this research was that JAS thesis producedby undergraduate students of Biology Education Unnes dominated with ecosystem concept, mostly done in 2011-2012, dominated with experiment method, and the result more oriented in cognitive aspect of learning outcomes. Inaddition, it was revealed that the final project had met JAS’s component and found some strenghts and weakness ofJAS approach.
Lembaran Kerja Mahasiswa Berbasis Mastery Learning yang Praktis dan Efektif Pada Mata Kuliah Genetika Megahati, Ruth Rize Paas; Yanti, Febri; Susanti, Diana
Journal of Biology Education Vol 6 No 2 (2017)
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v6i2.19325

Abstract

Genetika merupakan salah satu mata kuliah Keilmuan dan Keterampilan dalam bidang Biologi danmerupakan mata kuliah wajib di program studi pendidikan Biologi STKIP PGRI Sumbar Padang.Konsep-konsep genetika sulit dipahami mahasiswa. Selama perkuliahan mahasiswa hanyamengharapkan informasi dari dosen padahal fasilitas perpustakaan dan wifi sudah tersedia.Mahasiswa tidak mampu menyelesaikan soal-soal genetika yang lebih banyak membahas soal-soalhitungan layaknya matematika. Selama ini belum tersedia lembar kerja mahasiswa yang memadai.Akibatnya proses belajar tuntas (Mastery learning) tidak terlaksana dan hasil belajar mahasiswa masihrendah pada mata kuliah genetika. Tujuan penelitian ini mengembangkan lembar kerja mahasiswaberbasis Mastery learning pada mata kuliah genetika yang praktis dan efektif. Jenis penelitian ini,penelitian pengembangan dengan menggunakan 4-D models. Teknik analisis data yang digunakanadalah analisis deskriptif yang mendeskripsikan hasil uji kepraktisan dan keefektifan lembar kerjamahasiswa berbasis Mastery learning. Hasil uji kepraktisan lembar kerja mahasiswa berbasis Masterylearning pada mata kuliah genetika berada pada kriteria 80,33% dan 80,14% yang berarti lembar kerjamahasiswa ini praktis digunakan oleh dosen dan mahasiswa. Lembar kerja mahasiswa berbasisMastery learning efektif karena dapat meningkatkan aktivitas dan hasil belajar mahasiswa.Kesimpulan penelitian ini adalah lembar kerja mahasiswa berbasis Mastery learning pada mata kuliahgenetika dinyatakan praktis dan efektif. Genetics is one of the subjects that must be followed by students in Biology study programe. Generallystudents do not like the genetic subject because of genetics concepts difficult to understand and theunavailability of a practical student worksheets. Consequently, the complete learning process (Masterylearning) is not fulfilled and low student learning outcomes. The aim of this study develops studentworksheets based on Mastery learning that practical in genetic subject. This research is a research anddevelopment using 4-D models. The data analysis technique used is descriptive analysis that describesthe results of the practicalities of student worksheets based on Mastery learning by students and lecturersof genetic subject. The result is the student worksheets based on Mastery learning on genetics subject areto the criteria of 80,33% and 80,14%, which means that the students worksheets practical used bylecturers and students. Student worksheet based on Mastery learning effective because it can increase theactivity and student learning outcomes. The conclusion of this study is student worksheets based onMastery learning in the subject of genetics otherwise practical and effective.
Penerapan Model Group Investigation terhadap Kemampuan Bertanya Siswa Materi Sistem Regulasi Riani, Elen Dining; Peniati, Endah; Supriyanto, Supriyanto
Journal of Biology Education Vol 6 No 2 (2017)
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v6i2.19326

Abstract

Penelitian ini bertujuan untuk mengatahui pengaruh penerapan model group investigation terhadapkemampuan bertanya siswa pada materi sistem regulasi. Jenis penelitian pre-eksperimenmenggunakan desain one shot case study. Populasi penelitian adalah kelas XI MA Al-IrsyadDemak semester II tahun ajaran 2015/2016. Sampel penelitian ditentukan secara total sampling,yaitu kelas XI IPA 1 dan XI IPA 2. Pengumpulan data dilakukan dengan metode dokumentasi,tes, observasi, dan angket. Kemampuan bertanya siswa dinilai secara lisan dan tertulis denganmenggunakan instrumen yang telah divalidasi oleh dosen ahli. Hasil penelitian menunjukkanbahwa persentase ketuntasan hasil belajar siswa secara klasikal ≥ 80% yaitu sebesar 93,78%.Persentase siswa yang mendapatkan nilai kemampuan bertanya dengan kriteria minimal tinggimencapai 98,26%, dengan uji peningkatan kemampuan bertanya dari pertemuan pertama sampaipertemuan kelima memperoleh kriteria tinggi dengan N-gain 0,703. Berdasarkan hasil analisishubungan kemampuan bertanya dan hasil belajar siswa, diperoleh jumlah kuadrat deviasi untuknilai Fhitung = 19,247 dengan persamaan regresinya adalah Y = 48,08 + 0,475 X artinya hasilbelajar siswa dapat bertambah sebesar 0,475 kali dari setiap satu satuan variabel kemampuanbertanya siswa (X). Berdasarkan hasil analisis dan pembahasan, dapat disimpulkan bahwapenerapan model group investigation pada materi pembelajaran sistem regulasi berhasil digunakandan berpengaruh terhadap kemampuan bertanya siswa. The purpose of this study was to confirm the implementation of the model group investigation on thestudent’s questioning ability on regulatory system material. This study is a pre-experimental research usingone shot case study design. The population in this study is two classes in grade XI of MA Al-Irsyad Demakenrolled in the second semester of the 2015/2016 academic year. The sample research is determined by totalsampling, which is a class XI IPA 1 and XI IPA 2. The data collection is done by documentation, testing,observation and questionnaires methods. Student’s questioning ability assessed orally and in writing usingthe instrument that has been validated by two expert lecturers. The results showed that the percentage ofcompleteness of student learning outcomes classically is ≥ 80%, ie 93.87%. The percentage of student’squestioning ability with a minimum high category is 98.26%, with student’s questioning ability an increasefrom the first meeting until the fifth meeting of obtaining high criteria with N-gain 0,703. Based on theanalysis of student learning and student’s questioning ability, obtained the sum of squared deviations for thevalue of F=19.247 with a regression equation is Y = 48.08 + 0.475 X, means student learning outcomes canbe increased by 0.475 times of each of the unit variable student’s questioning ability (X). Based on theanalysis and discussion, it was concluded that the application of the group investigation model on thelearning material regulatory system affects students' questioning ability.
Karakter Disiplin dan Percaya Diri Melalui Model Pembelajaran Problem Based Learning Materi Pertumbuhan dan Perkembangan Afifudin, Afifudin; Bintari, Siti Harnina; Ridlo, Saiful
Journal of Biology Education Vol 6 No 2 (2017)
Publisher : FMIPA UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbe.v6i2.19327

Abstract

Penelitian ini bertujuan untuk mendeskripsikan potret perkembangan dan pencapaian sikap disiplindan percaya diri siswa, serta faktor yang menyebabkan tidak terekspresinya sikap tersebut. Metodepengambilan data adalah observasi, dokumentasi, dan wawancara. Tujuan observasi adalahmemperoleh data skor siswa, sedangkan data faktor yang menyebabkan tidak terekspresinya karakterdisiplin dan percaya diri diperoleh melalui wawancara. Berdasarkan data skor menunjukkan potretsikap disiplin dan percaya diri siswa selama pembelajaran materi pertumbuhan dan perkembanganmelalui model PBL bersifat fluktuatif. Capaian sikap disiplin siswa secara klasikal tergolong baikdengan persentase 82,5%, sedangkan pencapaian sikap percaya diri tergolong cukup denganpersentase 65%. Selama proses pembelajaran seluruh siswa mengekspresikan karakter disiplin,namun pada karakter percaya diri terdapat 2 siswa yang tidak mengekspresikan. Berdasarkan datahasil wawancara, faktor utama yang menyebabkan siswa tidak mengekspresikan karakter percayadiri adalah perlakuan overdiscipline, overprotection, rejection, dan domination orang tua terhadap siswa.Faktor penyebab lainnya adalah sikap tidak efektif guru pada proses pembelajaran dan lingkungansosial (teman sebaya) siswa. The study aims to describe the portrait of students in developing and achieving the discipline and confidence, andfactors that cause an unexpressed attitude. The method of data collection is observation, documentation, andinterview. The purpose of observation is acquiring the score data of the students, while the factors that lead to anunexpressed character of the discipline and confidence are obtained through the interview. Based on the scoredata, the students’ discipline and confidence during the material learning of growth and development throughPBL models are fluctuating. The achievement of the discipline attitude classically belongs to good with percentageof 82.5%, while the confidence attitude belongs to enough with percentage of 65%. During the learning process,all students expressed the character of discipline, but there were two students who did not express character of theconfidence. Based on the results of the interview, the main factor that caused the students unabled to express thecharacter of confidence was bacause of the over discipline treatment, overprotection, rejection, and parents’domination towards the students. Another factor is the ineffective attitude of teachers in the learning process andthe social environment (peer) students.

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