This research aimed to determine the validity of the Physics Event Photo Analysis (AFKF) module based on the STEM approach and improve students' critical thinking skillsat SMA Negeri 1 Rogojampi. The researchers implemented the ADDIE development model to achieve these goals, which consisted of five stages: Analysis, Design, Development, Implementation, and Evaluation. The data collecting techniques used in this research were interviews, product validation, and tests. The validation results indicated that the product was feasible to use with a validity percentage of 93%. The percentages can be categorized as very valid and can be used without revision. Furthermore, the percentage of the product's effectiveness in improving students' critical thinking abilitywas 66.58% which was included in the medium category. The PhysBased on the STEM approach, the Event Photo Analysis Module (AFKF) based ed positive responses from students with a percentage of 76%.TThis development research concluded that the STEM approach-based Physics Event Photo Analysis (AFKF) module is very valid and effective in improving students' critical thinking skills.

UKBM is a learning tool using the Semester Credit System (SKS) and is a small learning unit that is arranged sequentially by involving study time units. This research is focused on developing UKBM with the Engineering Design Process (EDP) approach in learning physics in high school. The purpose of this study was to produce a valid UKBM and determine the effectiveness of UKBM through increasing students' STEM literacy after using the EDP-based UKBM. This study uses a research and development (R&D) model with the ADDIE model consisting of five stages, namely: Analysis, Design, Development, Implementation and Evaluation. The results of the validity of product development are declared valid by the three validators with an average percentage of 88%, so that product development can be implemented in schools. The results of the effectiveness obtained from analyzing the results of the pre-test and post-test N-gain with the acquisition of N-Gain of 76.96% so that it is in the high category. The development of UKBM with the Engineering Design Process (EDP) Approach to improve STEM literacy of high school students was declared valid and effective.

Telah dilakukan penelitian mengenai pemisahan anomali regional dan residual pada metode gravitasi studi kasus Gunung Semeru Jawa Timur dengan menggunakan data citra satelit. Penelitian ini bertujuan untuk mengidentifikasi struktur bawah permukaan yang ada di sekitar lokasi. Pemisahan anomali Bouguer lengkap menjadi anomali regional dan residual menggunakan metode polinomial orde dua. Berdasarkan hasil pengolahan data diperoleh hasil anomali residual denga nilai rendah yang diperkirakan sebagai kantung magma dari kawah Jonggring Seloko yang berada di sebelah tenggara Gunung Semeru dan anomali tinggi diperkirakan sebagai batuan beku atau material erupsi dari Gunung Semeru yang berada di sebelah timur dengan arah menuju barat laut, sebelah tenggara dengan arah menuju timur, dan di sebelah utara.

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The aim of the research is to establish the design of the trainer kit project to determine the effect of the rope material type toward the rope wave velocity and the effect of the type of nylon, raffia, polyester, hemp and chinnese satin rope materials on the velocity of rope wave propagation. The research method used is the Research and Development method using  Nieveen design. The development of trainer kit uses an Arduino UNO microcontroller equipped with a proximity sensor HC-SR04 for measuring the rope wavelength. One point of the rope is tied with a timer ticker and the other is tied to a hanging load which is resting on a pulley. When the power supply is turned on, the timer ticker will vibrate to move the rope that has been tied. The rope will form a transverse wave. The result of this research, the design of trainer kit is development by using micro-controlled Arduino UNO and a proximity sensor HC-SR04 can be declared as a valid result. There are mass convention impacts of the type of rope likely nylon, polyester, raffia, hemp and chinese satin toward the rope wave velocity.