Students Worksheet is a very important guide for doing work in the laboratory which is often used by teachers and students. This study aims to analyze the existence of the constituent components and to provide an overview of the Students Worksheet Catalase Enzyme Test contained in the High School Biology textbooks. The research method used is descriptive qualitative method with a samples of 8 Students Worksheet chosen by using purposive sampling technique. The research instrument used was a LKS analysis instrument, table of work step and rubric test results based on the Vee diagram. The results showed that the Students Worksheet in terms of conceptual analysis as a whole was not in accordance with the applicable curriculum. For practical analysis as a whole it has shown quite good results even though there are still some Students Worksheet whose components are incomplete. Then the analysis of knowledge construction shows that the knowledge construction process has not been developed properly. In addition, from the results of the work step test there are still problems as in the choice of sentence instructions the steps of the work are less precise and less appropriate so that it can confuse students in their execution. In terms of completeness and component scores Students Worksheet based on the Vee Diagram, only a small portion of the catalase enzyme student activity sheet did not have the complete Vee Diagram component. Nevertheless, these components have different qualities which are indicated by the achievement scores of each component of Diagram Vee. Based on these problems, the Catalyst Enzyme Test LKS requires an analysis and improvement in terms of conceptual, procedural, and knowledge construction. Abstrak. Lembar Kerja Siswa merupakan suatu pedoman yang sangat penting untuk melakukan kerja di laboratorium yang sering digunakan oleh guru dan siswa. Penelitian ini bertujuan untuk menganalisis keberadaan komponen penyusun dan memberikan gambaran tentang Lembar Kerja Siswa Uji Enzim Katalase yang terdapat pada buku paket Biologi SMA. Metode penelitian yang digunakan adalah metode deskriptif kualitatif dengan sampel penelitian berjumlah 8 LKS yang dipilih dengan menggunakan teknik purposive sampling. Instrumen penelitian yang digunakan adalah berupa instrument analisis LKS, tabel hasil uji langkah kerja dan rubrik berdasarkan diagram Vee. Hasil penelitian menunjukkan bahwa Lembar Kerja Siswa tersebut dari segi analisis konseptual secara keseluruhan kurang sesuai dengan kurikulum yang berlaku. Untuk analisis praktikal secara keseluruhan sudah menunjukkan hasil yang lumayan baik walaupun masih terdapat beberapa LKS yang komponennya belum lengkap. Kemudian analisis konstruksi pengetahuan menunjukkan bahwa proses konstruksi pengetahuan belum terbangun dengan baik. Selain itu, dari hasil uji langkah kerja masih terdapat permasalahan seperti dalam pemilihan kalimat instruksi langkah kerja yang kurang tepat dan kurang sesuai sehingga dapat membingungkan siswa dalam eksekusinya. Dari segi kelengkapan dan skor komponen LKS berdasarkan Diagram Vee, hanya sebagian kecil LKS enzim katalase yang tidak memiliki komponen Diagram Vee lengkap. Meskipun demikian, komponen-komponen tersebut memiliki perbedaan kualitas yang ditunjukkan oleh capaian skor dari masing-masing komponen Diagram Vee. Berdasarkan permasalahn tersebut, maka LKS Uji Enzim Katalase memerlukan sebuah analisis dan perbaikan dari segi konseptual, prosedural, maupun konstruksi pengetahuan.

The assessments used in learning are often not in accordance with the demands of developing students' life skills and soft skills, when in fact these skills can be the basis for students to be able to compete with the global community in the future. This research aims to analyze the assessment of the skills to interpret data and scientific evidence on the written test of virus content used in Senior High Schools (SHS). The research method is descriptive through the collection of written test questions documents. The written test questions are analyzed on the Student Worksheet, Daily Test, Mid-Semester Assessment and Final Semester Assessment. A total of six schools in the city of Bandung categorized as public and private were selected by stratified random sampling representing the quality of each school. A total of 133 virus questions from six high schools in Bandung were collected for analysis. The research instrument used a validation rubric about science epistemic skills on indicators of skills in interpreting scientific data and evidence (PISA, 2019 framework). The data were analyzed qualitatively and quantitatively with descriptive statistics. The results showed that the questions used in schools on virus content (94.75%) had not measured the skills of interpreting scientific data and evidence. These questions also do not test students’ literacy in facing a virus pandemic. Only a minor proportion of items (2.25%) were found to test data interpretation and scientific evidence skills. In general, the subject of the test in schools still focuses on memory or memorization of material, basic understanding and does not present information or data to be processed and interpreted. Most of the questions presented are only in the form of basic concepts so that it does not require students to think at high levels and reason.

The purposes of this research were to investigate the effect of problem based learning models on basic science process skills and student learning outcomes on the concept of a food digestive system in humans. The subjects of this study were students of class XI MIPA of SMA Negeri 1 Tasikmalaya City in two classes. The method that was being used in this research was true experiment. The sample was being taken by cluster random sampling method. To measure the basic science prosess skills of the students used an instrument which consists of 12 questions in the form of essay and to measure the learning outcomes used test consists of 30 questions in the form of multiple choice with 5 option. The analysis technique was ANCOVA (analysis of covariance). The results of this research revealed that there was an impact of the problem based learning model to basic science process skills and learning outcomes of learners on the concept of food digestion system in human and there was a relationship between basic science process skills and learning outcomes. Through this research, we found that the higher the basic science process skills of the students, therefore it will impact to the learning outcomes of the students to be better.