<p>This study aims to analyse the critical thinking skills of high school students on five-senses material through the usage of inquiry pictorial riddle learning model. The type of the research used is descriptive quantitative with Pre-Experimental Design and type One-Shot Case Study. The results shows that the students' critical thinking ability were vary. Of 32 students, 50% of students can be classified into very good category, 26.5% into good category, and 23.5% students into medium category. The achievement on the five critical thinking indicators of all students were also different, in which the achievement of critical thinking indicator of giving the simplest explanation has the highest percentage of 90% (very good) compared to another indicators, building basic skill has 84% percentage (good), making conclusion 80% (good), and 60% (medium) in giving further information, in which the achievement of this indicator is the lowest compared to another indicator.  On indicator of setting strategy and tactics the percentage is 73 (good). Based on the statistical numbers above, the average thinking ability of all students in grade XI MIPA 6 SMA Negeri 1 Sindang Indramayu is 77% wich can be classified into good category.</p>

Miskonsepsi siswa dalam Mata Pelajaran Biologi disebabkan pada proses pembelajaran sebagian guru kurang memperhatikan konsep awal yang dimiliki siswa sehingga mereka sulit mempelajari konsep baru. Penelitian ini bertujuan untuk mengetahui profil miskonsepsi siswa kelas XI SMA Negeri 1 Sliyeg Indramayu pada materi sistem ekskresi melalui penugasan peta konsep. Jenis penelitian yang digunakan adalah metode kuantitatif deskriptif dan desain penelitiannya yaitu Pre-Experimental Designdengan bentuk One-shot Case Study. Populasi dalam penelitian ini adalah seluruh kelas XI MIPA SMA Negeri 1 Sliyeg Indramayu yang terdiri dari empat kelas dengan jumlah siswa 145 orang.Penelitian ini  menggunakan teknik penarikan sampel Purposive Samplingdan diperoleh sampel yaitu kelas XI MIPA 4. Instrumen yang digunakan yaitu tes pilihan ganda beralasan disertai dengan CRI (Certainty of Respon Index)untuk mengeyahui miskonsepsi siswa dan angket untuk mengetahui respon siswa terhadap peta konsep. Setelah dilakukan pengolahan data, didapatkan hasil bahwa telah terjadi miskonsepsi siswa dalam kategori rendah pada materi sistem ekskresi dengan persentase rata-rata sebesar 18,8%. Hasilmiskonsepsi tersebut berhubungan dengan peta konsep yang dibuat siswa.

ABSTRAKPenelitian ini bertujuan untuk mengetahui Tingkat Keterampilan Dasar Mengajar Calon Guru Biologi di salah satu universitas swasta di Indramayu dilihat dari segi keterampilan membuka pelajaran, keterampilan bertanya, keterampilan memberikan variasi stimulus pembelajaran, keterampilan melaksanakan kegiatan inti pembelajaran dan keterampilan menutup pembelajaran. Subjek penelitian ini adalah 90 mahasiswa Prodi Pendidikan Biologi. Penelitian ini menggunakan pendekatan ex post facto dengan metode penelitian deskriptif kuantitatif. Pengumpulan data dengan menggunakan observasi oleh dosen dan teman sejawat (peer assessment). Instrumen yang digunakan ialah rubrik penilaian mengajar serta angket. Data yang diperoleh diolah dan dianalisis ke dalam tabel kecenderungan dengan kriteria yang telah ditentukan untuk menggambarkan Tingkat Penguasaan Keterampilan Dasar Mengajar Mahasiswa calon guru Biologi. Hasil penelitian menunjukkan bahwa keterampilan membuka pelajaran, keterampilan bertanya, keterampilan melaksanakan kegiatan inti pembelajaran, dan keterampilan menutup pembelajaran adalah cukup terampil, sedangkan keterampilan memberikan variasi stimulus pembelajaran dikategorikan sebagai terampil. Kata kunci: calon guru biologi, keterampilan dasar mengajar, pengajaran biologi ABSTRACTThis study aimed to determine basic teaching skill level of pre service Biology teachers in one of private university in Indramayu in terms of their skills in opening, probing question, stimulating, conducting core activity and closing teaching activity. Subjects were 90 Biology Education Program. This study use ex post facto approach with quantitative descriptive research methods. Data were collected using teacher observation and peer assessment sheet. The instruments used were teaching assessment rubric and questionnaire data. The data obtained were processed and analyzed in the tendency table to determine criterias in describing pre service Biology teachers' basic teaching skill mastery. Result showed that pre service biology teachers were sufficiently skillful in opening, probing question, conducting core activity, and closing teaching activity whereas in giving learning stimulus they were deemed skillful.

The study aims to determine the effect of Problem Based Instruction learning model on the concept of pollution to the problem solving ability of high school students. This research is a kind of quantitative research. Population in this research is student of class X SMA Negeri 1 Lohbener. Cluster random sampling technique was taken by two classes and obtained by X-MIPA 4 students as experiment class by using Problem Based Instruction and X-MIPA 2 as control class by using discussion method. The instrument used is in the form of five essay questions in accordance with the problem-solving indicator that is restricted to the C3-C5 cognitive domain that has been tested for its validity and reliability. After a different treatment, each posttest is given. Based on the result of the research, the average value of experimental class is 72.25 and the control class average 58,95. Then by using t test, obtained tcount = 4.092> ttabel = 1,680. Based on hypothesis testing can be stated that Ho is rejected. So that the problem-based instruction model influences student's problem solving abilities.Keywords: pollution, problem based instruction, and problem solving ability. ABSTRAKPenelitian ini bertujuan untuk mengetahui pengaruh penggunaan model pembelajaran Problem Based Instruction pada konsep pencemaran terhadap kemampuan pemecahan masalah siswa SMA. Bentuk penelitian eksperimen berdesain postest only control group design. Populasi dalam penelitian ini adalah siswa kelas X SMA Negeri 1 Lohbener. Teknik pengambilan sampel secara cluster random sampling diambil dua kelas dan didapatkan siswa kelas X-MIPA 4 sebagai kelas eksperimen dengan menggunakan model pembelajaran Problem Based Instruction. Instrumen yang digunakan adalah berupa lima soal essai sesuai dengan indikator pemecahan masalah yang dibatasi pada ranah kognitif C3-C5 yang telah diuji validitas dan reabilitasnya. Setelah dilakukan perlakuan yang berbeda,

The textbooks used so far have not utilized learning resources to the fullest, such as the utilization of existing potential in the surrounding environment, planting values, and environmental awareness.Biodiversity textbook based on ethnobiology studies of the Suku Dayak Losarang is a product of the development of textbooks that can be used in biology learning on the concept of biodiversity.This study aims to look at the feasibility of biodiversity textbooks based on the ethnobiology study of the Suku Dayak Losarang Tribe and see the effectiveness of the textbook in biology learning in class X senior high school. This type of research is Research and Development (R&D) with eight stages of development models. Product Textbooks are validated by experts and practitioners using validation sheets. The validation results show that the book is suitable for use because it is good in terms of content worthiness, linguistics, and presentation. The textbook was tested on a small scale test and continued with a large scale test. The results of the effectiveness test using the different test showed that the biodiversity textbook based on the Suku Dayak Losarang was effectively used in biologylearning. Student responses to textbooks also scored high on all indicators. AbstrakBuku ajar yang digunakan selama ini belum memanfaatkan sumber belajar secara maksimal, seperti pemanfaatan potensi yang ada di lingkungan sekitar, penanaman nilai, dan kesadaran lingkungan hidup. Buku ajar biodiversitas berbasis kajian etnobiologi Suku Dayak Losarang merupakan produk pengembangan buku ajar yang dapat digunakan dalam pembelajaran biologi pada konsep keanekaragaman hayati. Penelitian ini bertujuan untuk melihat kelayakan buku ajar biodiversitas berbasis kajian etnobiologi Suku Dayak Losarang dan melihat efektivitas buku ajar tersebut dalam pembelajaran