Problem-Based Learning (PBL) is a constructivist learning with the potential to enhance students' science process skill. The implementation of PBL has revealed many advantages; however, a free exploration from a highly complex environment may result in a heavier workload of memory. Accordingly, practicum method can be used to overcome the shortcomings of PBL with the support of authentic assessment. This research aimsed to investigate the effect of PBL through practicum supported by authentic assessment, PBL, and conventional learning on science process skills of Dayak and Malay students in Animal Physiology lectures. The research used a quasi-experimental research design with a pretest-posttest nonequivalent control group design with 3 x 2 factorial design. Data collection involved a science process skill test. The data were analyzed descriptively and inferentially with ANCOVA. Significant differences between groups were assessed with LSD test. The result showed that the learning model influenced students' science process skill. The PBL model implemented through a practicum and supported with authentic assessment was the most influential being significantly different to both PBM model and conventional learning. Ethnicity did not significantly affect the students' science process skill. There was no interaction between learning model and ethnicity toward students' science process skill.

Misconception is often experienced by students who study abstract subjects. If this misconception continues to be maintained then the next concept will be wrong and become a difficulty in the learning process, even if a teacher will continue the wrong concept to their students. Therefore, the researchers tried to analyze the misconceptions that occur in students who are already studying cell biology course. The research approach is qualitative with the research method used is descriptive. The study population was students of Biology Education STKIP Persada Khatulistiwa Sintang and the samples used were 30 students who had taken cell biology courses. Data collection techniques are diagnostic tests and interviews. Data analysis using Certainty of Response Index (CRI). The results obtained were misconceptions on the plasma membrane concept of 22.50%, the concept of endoplasmic reticulum at 30.83%, the concept of the golgi apparatus at 17.50%, and the concept of ribosomes at 31.66%. This data is categorized as high enough that students experience misconceptions, the rest is that students do not know the concept and know the concept. From the results of the study it was concluded that there were misconceptions on the four concepts in the cell biology subject.

Science essences are product, process and scientific attitude. As a process, science is a used procedure to study the object of study, to discover and to develop science products. It seems that Indonesian education is not focusing on developing students' science process skills. Therefore, the researchers employed a problem-based learning model through an authentic assessment based practicum to improve students' science process skills. A Quasi experimental design with pretestposttest nonequivalent control group design was applied in this study. Biology educational students of STKIP Persada Khatulistiwa Sintang, West Borneo, Indonesia were taken as the population. The participants of the research were 60 students from two classes of animal physiology, each class consisted of 30 students. Essay test was applied to measure the science process skills. Essay test questions cover both science basic process skills and integrated science process skills. The research result showed that problem based learning through practical and authentic assessment affected the students' science process skills and there were significant differences between the problem-based learning model through authentic assessment based practicum with problem-based learning model.

Tujuan penelitian ini adalah untuk mengetahui Efektivitas Model Pembelajaran Inkuiri Terbimbing melalui Metode Demostrasi terhadap Hasil Belajar Psikomotorik Siswa. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif. Bentuk penelitian yang digunakan yaitu quasi-eksperimen dengan desain penelitian nonequivalent control group design. Sampel dalam penelitian ini berjumlah 21 siswa pada kelas eksperimen dan 20 siswa pada kelas kontrol. Teknik pengumpulan data menggunakan teknik observasi langsung, teknik pengukuran, dan teknik komunikasi tidak langsung. Alat pengumpulan data yang digunakan adalah lembar observasi, tes untuk kerja, dan angket. Hasil analisis lembar observasi guru pertemuan pertama dan kedua diperoleh nilai rata-rata persentase sebesar 100%, yang berkriteria sangat baik, sedangkan analisis lembar observasi siswa pada pertemuan pertama dan kedua diperoleh nilai rata-rata persentase sebesar 95,40% yang berkriteria sangat baik. Hasil analisis nilai Effect Size (ES) diperoleh nilai sebesar 0,7 dengan kriteria sedang. Hal ini menunjukkan bahwa penggunaan model pembelajaran inkuiri terbimbing melalui metode demostrasi cukup efektif digunakan untuk meningkatkan hasil belajar psikomotorik siswa. Berdasarkan pengolahan data angket respon siswa diperoleh rata-rata nilai persentase sebesar 86,03% dengan kategori sangat kuat.

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