Sudden cardiac arrest is a condition that occurs quite frequently. This sudden cessation of heart function is caused by the loss of electrical activity in the heart, which results in the cessation of blood circulation throughout the body. Quick and proper handling of this condition can reduce the mortality rate due to cardiac arrest. Therefore, Basic Life Support (BLS) training needs to be conducted to educate the general public. The BLS training conducted for the management officers and youth of Saint Francis of Assisi Church in Tebet was carried out by providing theoretical and practical BLS lessons, as well as conducting pre-tests and post-tests to assess the participants' understanding of the material and practices provided. From the activity conducted, a total of 22 participants attended the BLS training, and there was a significant difference in the average pre-test and post-test scores. It can be concluded that the training provided was effective in increasing the participants' understanding and knowledge of BLS.

To increase students' enthusiasm for studying Pancasila, proper, effective, and interesting learning media is needed. However, the main obstacle is the lack of innovative and creative media which causes learning effectiveness to decrease and student interest to decrease. The purpose of this study was to develop a fun thinkers book-based learning media on Pancasila material for class IV at UPTD SD Negeri Kamal 2 that is valid, effective, and interesting. The research method used is research and development with a 4-D model which consists of 4 stages, namely define, design, develop, and dissemination. The subjects of this study were teachers and fourth grade students at UPTD SD Negeri Kamal 2. The results of the expert validation of the developed media obtained the results of the material expert validation I with a value of 96% and the material expert validation II with a percentage value of 98%. Followed by the results of the validation of the media expert I with a value of 97% and the validation of the media expert II with a percentage value of 95%, the expert validation gets an average percentage of 96.5% including the very valid category. This product is considered very interesting based on student and teacher response questionnaires with a percentage of 92.37%. The results showed that the fun thinkers book based learning media on Pancasila class IV material was very valid, effective, and interesting, so it was suitable for use in classroom learning.