This study aims to produce teaching materials in the form of CTL-based worksheets for class XI at Senior High School. The method used in this research is the method of development. The initial stage is an analysis of the teaching materials used by teachers at school. Before being tested on class XI students, the worksheets were validated by experts as well as physics teachers and students at Senior High School 1 Gunung Tuleh. After being validated, improvements were made according to the suggestions given. The average results of the validation of learning experts, physicists, and linguists were 0.77, 0.90, and 0.81 from all aspects. The practical value of teachers and students is 79.68 and 87.43 with the valid category. After testing the validity and practicality of the physics learning videos, the results of the effectiveness test of the learning videos were obtained to measure students' critical and creative thinking skills. The average N-gain values are 0.22 and 0.26. With the overall results obtained, it can be concluded that the contextual-based worksheets that have been developed are suitable for use in learning activities

Needs analysis becomes an empirical basis for developing research. Data and studies are produced from a complete needs analysis in producing the right product. In this study the analysis was conducted as a preliminary study to reveal the needs of stake holders for CTL-based videos for fluid material. Applied survey research methods with quantitative and qualitative approaches. Research objects related to student characteristics, learning resources, teaching materials and learning media. Quantitative and qualitative data collection procedures use questionnaire and interview instruments. Technical analysis of quantitative dataprocess and categorize data while qualitative data reduces, presents and verifies data. Obtained the results of student characteristics are good, but the aspect of interest shows the lowest value, especially solving and finding solutions to problems of daily life. The media teachers use to teach fluids are powerpoints, images and videos. Learning resources are only textbooks equipped with teaching materials in the form of encyclopedias, modules and worksheets that contain a collection of questions that do not provide experience in solving everyday problems. These findings indicate that the cause of the lack of student interest in solving everyday problems and the low student learning outcomes is that learning media is not in accordance with needs. Media is needed that can facilitate students solving everyday problems. Fluid material that has many daily applications, media needed in the form of CTL-based video. Besides CTL-based videos can display phenomena in full, videos can also develop students' higher-order thinking skills by thoroughly analyzing the phenomena that are displayed

This study was aim to produce a valid instrument that can measure the quality of the context-based video of the sound. Instruments that had been developed include: physics learning expert validation instrument, physicist validation instruments, linguist validation instruments, teacher practicality instruments, student practicality instruments, critical thinking skills instruments, creative thinking skills instruments, collaboration skills instruments, and communication skills instruments both oral and writing. This research uses the ADDIE development model which consists of five stages. Data analysis for validity refers to the Aiken’s V coefficient where the instrument is valid if it is validity coefficient ≥ 0.6. The validation coefficient given by the expert for each instrument is as follows: the learning physics instrument 0.90, the physicist validation instrument was 0.91, the linguist validation instrument was 0.77, the teacher practicality instrument was 0.97, the student practicality instrument was 0, 87, instruments of critical thinking skills of 0.91, instruments of creative thinking skills of 0.93, instruments of collaboration skills of 0.99, instruments of oral communication skills of 0.98, and instruments of written communication skills of 0.90. All of instruments are valid, so the instrument can be used to measure the quality of the instructional video of sound.

No abstract

Penelitian ini bertujuan untuk menghasilkan instrumen validitas yang berkualitas yang digunakan dalam menilai validitas video pembelajaran fisika berbasis CTL pada materi fluida. Instrumen yang dinilai terdiri atas instrumen validitas isi, konstruk dan bahasa. Jenis penelitian ini adalah penelitian pengembangan. Subjek penelitian terdiri atas 3 validator terkait yang ahli pada dibidangnya. Penilaian instrumen validitas ini menggunakan lembar penilaian instrumen. Berdasarkan dari pengolahan dan analisis data yang telah dilakukan menunjukan bahwa instrumen berada dalam kategori valid dengan nilai rata-rata untuk validasi isi sebesar 0,89, nilai rata-rata untuk validasi konstruk sebesar 0,91, dan nilai rata-rata untuk validasi bahasa sebesar 0,83. Dengan demikian, instrumen layak digunakan untuk mengukur validitas video pembelajaran fisika berbasis CTL pada materi fulida.