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The Industrial Revolution 4.0, which coincided with the presence of the Covid-19 pandemic, demanded that the world of education implement a different system. Classroom learning that involves students directly is now starting to switch to online learning. One of the learning media used is the Kahoot application. Interactive quizzes in this application can be implemented on an ongoing basis, including in face-to-face learning after the pandemic. Unfortunately, not all educational institutions know about the existence and benefits of this application. Sungai Putih High School, Kampar Regency, which is our service partner, is one of them. This dedication to introducing interactive learning through online media has had satisfactory results. From 38 respondents covering all classes and teachers at the high school, 100% of respondents felt interested in this learning and 96% of respondents agreed that learning evaluation using Kahoot was felt to be more effective than tests in general. For the continuity of implementation, the service team provided a Kahoot Usage Guide book which was designed directly by the service team.

Nationalism is a form of ideology that places the highest love, loyalty, and commitment on the nation-state. The concept of nationalism leads to the desire to live together as a nation that has goals and aspirations to be achieved together. Nationalist understanding and behavior must be based on the awareness of being part of a nation and oriented toward achieving common national goals. In the context of practicing nationalism and supporting national defense, the defense industry is a vital strategic industry to pay attention to. The defense industry is engaged in the area of ​​national defense-supporting products. With the arrival of the 4.0 industrial revolution era, the defense industry cannot remain silent and requires adaptation in its application both in the production of defense products and in their use to support national defense. Nationalism is the basis for the development of national independence as the main capital for realizing the ideals of independence, namely becoming an independent, sovereign, and prosperous nation. For this reason, the independence of the defense industry is an implementation of nationalism and part of the national defense strategy in dealing with state threats that are always developing in tandem with technological developments. The independence of the defense industry must be implemented and fully supported by the government and related parties so that it can play a role in realizing the aspirations of the nation and fostering a spirit of nationalism for the Indonesian people.

Technology developments in the era of the industrial revolution 4.0 provide many opportunities to improve supply chain performance and performance. The existence of the waste processing industry as a business has prospects for development, given the large amount of waste generated by the community and the need for several processed products. PT A reduced the amount of garbage that accumulates in the final disposal site (TPA) by reprocessing the waste produced by the community. The existence of waste banks, government agencies, hotels, zoos, and Islamic boarding schools is one of the sources of waste that is processed for waste products. This paper seeks to develop the concept of a digital supply chain by adopting the supply chain model run by PT A. The initial identification presented in this paper can result in several technology identifications that need to be prioritized in implementing relevant technologies in the industry. The expected impact of this implementation is an increase in supply chain performance