Abstrak: Pandemi Corona Virus Diseases 2019 (Covid-19) telah berdampak diberbagai sektor kehidupan masyarakat. Berbagai kebijakan diberlakukan pemerintah sebagai  upaya  mengurangi dan memutus rantai penyebaran Covid-19 salah satunya adalah membentuk program Kampung Tangguh Semeru. Dilaksanakannya program kampung tangguh semeru ini diharapkan sebagai upaya melawan penyebaran virus Covid-19 yang dilakukan mulai lingkup terkecil, yakni dari desa dan warga sekitar. Program kampung tangguh semeru dilaksanakan sebagai upaya penanggulangan Covid-19 di Desa Tegalsari yang masuk dalam zona hijau karena tidak ada warga desa yang tertular virus Covid-19. Untuk mendukung program pemerintah tersebut, dilakukan kegiatan pengabdian di Desa Tegalsari memiliki inisiatif untuk mengadakan 1000 masker, tempat cuci tangan dan handsanitizer sebagai bentuk dukungan terhadap program pemerintah tersebut untuk memutus rantai virus Covid-19. Kontribusi yang diberikan ini sedikit banyak membantu untuk memenuhi fasilitas serta sarana prasarana Desa Tegalsari sebagai Kampung Tangguh Semeru. Semua ini nantinya akan menumbuhkan budaya hidup sehat, aman, dan tertib. Abstract: The 2019 Corona Virus Diseases (Covid-19) pandemic has impacted various sectors of people's lives. Various policies have been implemented by the government in an effort to reduce and break the chain of the spread of Covid-19, one of which is the establishment of the Kampung Tangguh Semeru program. The implementation of the Semeru Resilient Village program is expected to be an effort to fight the spread of the Covid-19 virus which will be carried out from the smallest scope, namely from villages and local residents. The Semeru Resilient Village Program is implemented as an effort to tackle COVID-19 in Tegalsari Village which is included in the green zone because no villagers have contracted the COVID-19 virus. To support this government program, are carrying out service activities in Tegalsari Village have the initiative to hold 1000 masks, hand washing stations and handsanitizers as a form of support for the government program to break the chain of the COVID-19 virus. The contribution given is more or less helping to fulfill the facilities and infrastructure of Tegalsari Village as a Tangguh Semeru Village. All of this will eventually foster a culture of healthy, safe and orderly living.

Strategy problem-solving is a technique or method for finding answers to problems. Students' different maths skills can affect how they use and figure out ways to solve problems. This type of research is descriptive and uses a qualitative approach. Its goal is to find out and analyse how the backward working strategy is used to solve the Minimum Competency Assessment (AKM) questions on the spatial structure in terms of students' maths skills. After giving people a test of their maths skills and giving them problems to solve, they were interviewed. Students with high, medium, and low maths skills are taking part in this study. Data analysis used is data reduction, data presentation, and data retrieval. The results were based on the six students who participated in the research. Students could use Polya problem-solving steps with high and moderate maths skills, but they didn't work well for students with low maths skills. Working backwards is not a method used by everyone. The first student with good maths skills can use the strategy of working backwards from the correct answer. The second student with good maths skills can't do that. The backward plan makes few mistakes. The answer is wrong for the first student with average maths skills because they do not have a backwards strategy. The second student with average maths skills can use the backward working strategy, but they make a lot of mistakes. The first and second students with low maths have not used the backward working strategy, even though the mathematically able student has. The first low can show that the statement is true.

Media pembelajaran merupakan inovasi pendidikan yang terus berkembang. Hal ini terkait dengan pembelajaran seni khususnya pembuatan media pembelajaran menggunakan aplikasi tik-tok. Aplikasi ini merupakan inovasi yang dibuat untuk tujuan berekspresi, tetapi dalam konteks pembelajaran tik-tok, dapat digunakan sebagai ruang digital untuk memanfaatkan perkembangan teknologi dan membuatnya dapat diakses secara bebas oleh siswa SMA YALC Pasuruan. Dalam penelitian ini, kami menggunakan metode deskripsi kualitatif. Kegiatan pembelajaran berbasis aplikasi tik-tok digunakan dalam matematika. Aktivitas pembelajaran ini mengenali konten barisan dan deret dan memuatnya ke dalam video dengan trek audio. Dengan menggunakan kemampuan editing dari setiap konten video yang berfungsi sebagai media pembelajaran, dengan penekanan dalam bentuk penjelasan yang dipahami secara audiovisual. Dengan berkembangnya teknologi media ini, siswa akan dapat belajar secara mandiri dengan memainkan aplikasi tik-tok dan menonton video. Selain itu, selama siswa menggunakan media sosial tik-tok, pendidik dapat memantau proses pembelajaran.