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This study aims to reveal the impact of distance learning during the Covid-19 pandemic on Science Technology Engineering and Math (STEM) competence, productivity, and students' character. This research uses mixed methods. The questionnaire instrument consists of STEM components, Learning Products, and character profiles obtained from Elementary School/Madrasah Ibtidaiyah, Junior High Schools, and Senior High Schools in Jakarta and Bandung. Furthermore, the data were analyzed, and it was concluded that the performance of all the variables studied had varying degrees. Besides, STEM literacy skills are closely related to learning productivity and character building of students at all levels of education. Therefore, distance learning after the Covid-19 pandemic needs to be planned well and considers the level of STEM literacy and character content clarity.

Local wisdom is one of the important competencies that must be possessed by students who support 21st-century skills. The formation of the local wisdom of students can be built by literacy skills on social science. The study of local wisdom and the literacy of social sciences in basic education are still beyond its chances. This study aims to reveal the profile of social literacy abilities that support the formation of local wisdom. The method used is participatory qualitative where the participants are 44grade elementary school students in Bandung. The instrument used is a list of social knowledge literacy and triangulation by using interview techniques. The results showed that: (1) social literacy abilities that supported local wisdom varied based on gender and average social achievement scores in the previous class, (2) most students still had low social sciences literacy skills, and (3) literacy ability of students' social sciences from compulsory textbooks, social media and information from adults. This study concludes that social literacy skills and local wisdom in elementary school students in Bandung are still low.

Penelitian ini mempelajari fotodegradasi air Sungai Landak dengan material penyangga polimer polipropilena (PP) berfotokatalis semikonduktor TiO2. Disamping itu, dilakukan pula analisis untuk mengetahui hubungan antara jumlah TiO2 yang terdeposisi di permukaan PP dengan variasi suhu saat proses pabrikasi. Pabrikasi PP/TiO2 dilakukan dengan teknik deposisi thermal milling. Dari hasil pabrikasi yang dilakukan, diketahui bahwa TiO2 paling banyak terikat pada permukaan PP pada suhu milling  dengan massa TiO2 sebesar 1,7 gram. Sedangkan, hasil degradasi yang paling optimum (absorbansi maksimum = 1,446) diperoleh PP/TiO2 dengan suhu milling  setelah fotodegradasi selama 40 jam. Walaupun suhu milling  menghasilkan massa TiO2 terdeposisi pada permukaan PP yang paling tinggi, namun tidak diiringi dengan hasil degradasi terbaik. Hal ini dikarenakan adanya indikasi overlapping antar TiO2 sehingga menyebabkan luas permukaannya menjadi lebih kecil dan membuat proses fotodegradasi menjadi tidak optimal. Akhirnya untuk parameter pH, semua sampel yang diberikan PP/TiO2 mengalami kenaikan nilai pH dari 4,9 menjadi 6,6 (suhu milling 100 ), menjadi 6 (suhu milling 150  dan 200 ), menjadi 5,7 (suhu milling 125 ), dan menjadi 5,3 (suhu milling 175 ). Nilai pH air sungai setelah ditambahkan PP/TiO2 pada suhu milling 175  tergolong pH<pzc sehingga mendukung terjadinya degradasi sampel air yang lebih cepat daripada variasi suhu milling yang lain.