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PROBLEM POSING CARD (PPC): MENINGKATKAN KETERAMPILAN BERTANYA DAN HASIL BELAJAR SISWA Agustina, Puji; Lisdiana, -; Marianti, Aditya
Journal of Biology Education Vol 4 No 3 (2015)
Publisher : Journal of Biology Education

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Abstract

Penelitian ini bertujuan untuk meningkatkan keterampilan bertanya dan hasil belajar siswa kelas XI SMA Negeri 1 Kayen Pati. Penelitian ini merupakan penelitian Colaborrative Action Research (CAR). Tahap-tahap penelitian ini meliputi kegiatan: 1) perencanaan, 2) pelaksanaan tindakan, 3) pengamatandan 4) refleksi.Penelitian ini dilakukan selama tiga siklus pada pembelajaran materi sistem pertahanan tubuh. Hasil penelitian menunjukkan ada peningkatan keterampilan bertanya dan hasil belajar siswa setelah diterapkan PPC. Persentase keterampilan bertanya siswa meningkat dari siklus I sebesar 74.19%, siklus II sebesar 77.42% dan siklus III sebesar 90.32%. Hasil belajar siswa juga mengalami peningkatan dari siklus I sebesar 67.74%, siklus II sebesar 70.97% dan siklus III sebesar 90.32%. Hasil analisis korelasi antara keterampilan bertanya dan hasil belajar siswa menunjukkan hubungan positif dan signifikan dengan nilai korelasi (r) pada siklus I sebesar 0.452 dengan kategori sedang, siklus II sebesar 0.563 dengan kategori sedang dan pada siklus III sebesar 0.669 dengan kategori kuat. Hubungan positif tersebut diartikan semakin tinggi nilai keterampilan bertanya maka hasil belajar juga akan meningkat. Simpulan penelitian ini yaitu: PPCdapat meningkatkan keterampilan bertanya dan hasil belajar siswa kelas XI-IPA 2 SMA Negeri 1 Kayen Pati dan terdapat hubungan positif dan signifikan antara keterampilan bertanya dan hasil belajar siswa.     This study aims to improve questioning skill and studentslearning outcomesof class XI-IPA 2 SMA Negeri 1 Pati Kayen. This research is Colaborration Action Research (CAR).The procedures of the research are: 1) planning, 2) acting, 3) observating and 4) reflecting.There are three cycles to do this research in the learning of system immune in human body.The results showed there are increased questioning skills and student learning outcomes after application ofPPC. The percentage of questioning skill is 74.19% of first cycle, 77.42% of second cycle and 90.32% of third cycle.Student learning outcomes also show theincreased from 67.74% of first cycle, 70.97% of the second cycle and 90.32% of the third cycle.The results of correlation analysis between the questioning skills and student learning outcomes showed positive and significant relation of the correlation (r) for  0.452 of first cycle in medium categorize, 0.563 of second cycle in medium categorize, and 0.669 of third cycle in strong categorize.This relation means that if the questioning skill is rise, so the result of the study is also rise.The conclusions of this research can be seen as following: PPC can improve the questioning skills and students learning outcomes of class XI-IPA 2 SMA Negeri 1 Kayen Pati and moreover there is a positive and significant relation between questioning skills and student learning outcomes.
RAM JET VENTILATION, PERUBAHAN STRUKTUR MORFOLOGI DAN GAMBARAN MIKROANATOMI INSANG IKAN LELE AKIBAT PAPARAN LIMBAH CAIR PEWARNA BATIK Putra, Defrianto Alfika; Lisdiana, -; Pribadi, Tyas Agung
Life Science Vol 3 No 1 (2014)
Publisher : Universitas Negeri Semarang

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Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh limbah cair pewarna batik terhadap laju kecepatan ram jet ventilation, struktur morfologi dan mikroanatomi insang ikan lele (Clarias batrachus). Penelitian ini merupakan penelitian eksperimental, sampel penelitian diambil dengan metode random sampling yaitu diambil sampel ikan sebanyak 40 ekor usia 2 bulan. Penelitian dilakukan dengan menambahkan  limbah cair pewarna batik berbeda konsentrasi pada akuarium yang berisi ikan  lele, konsentrasi yang digunakan  adalah kelompok 0 ppt (kontrol), 10 ppt, 15 ppt, 20 ppt, 25 ppt, 30 ppt dan 35 ppt  selama 12 hari. Pengambilan data untuk laju kecepatan ram jet ventilation dengan cara memperhatikan gerak operkulum ikan lele setiap 2 hari sekali selama 1 menit kemudian data dianalisis dengan Anava satu arah dan uji lanjut BNT. Struktur morfologi diamati warna insang. Gambaran mikroanatomi insang diperoleh dengan pembuatan preparat mikroskopis insang ikan lele. Data morfologi dan mikroanatomi insang dianalisis dengan metode deskriptif kualitatif.  Penelitian menunjukkan bahwa terjadi perbedaan nyata laju ram jet ventilation antar kelompok perlakuan. Insang tampak pucat dan menghitam serta mengalami edema dan hiperplasia lamela sekunder.This study aims to determine the effect of batik dye wastewater to the rate of speed of the ram jet ventilation , structure and morphology of gill mikroanatomi catfish ( Clarias batrachus ) . This research is an experimental study , samples were taken with a random sampling method that samples taken , 40 were caught fish age 2 months . The study was conducted by adding different batik dye wastewater concentrations in aquarium containing catfish , the concentration used was 0 ppt group ( control ) , 10 ppt , 15 ppt , 20 ppt , 25 ppt , 30 ppt and 35 ppt for 12 days . The rate of speed of data retrieval for ram jet ventilation by watching the motion operculum catfish once every 2 days for 1 minute and then the data were analyzed by one -way ANOVA and LSD test further . Morphological structures observed gill color . Preview mikroanatomi gills obtained by making microscopic preparations catfish gills . Mikroanatomi gill morphological data and analyzed by descriptive qualitative method . Research shows that there is a real difference between the rate of ram -jet ventilation treatment groups . Gills pale and black and edema and hyperplasia secondary lamella .
Co-Authors Aditya Marianti Puji Agustina, Puji Putra, Defrianto Alfika Tyas Agung Pribadi, Tyas Agung