Open AccessExamining Some of Students’ Views on the Nature of Science (NOS) in Traditional Lecture Format Teaching Environment
Author(s) -
Issa I. Salame,
Shuai Dong
Publication year - 2021
Publication title -
ijcer (international journal of chemistry education research)
Language(s) - English
Resource type - Journals
eISSN - 2614-1426
pISSN - 2549-9947
DOI - 10.20885/ijcer.vol5.iss2.art4
Subject(s) - nature of science , mathematics education , curriculum , rote learning , science education , point (geometry) , field (mathematics) , conceptual change , psychology , teaching method , pedagogy , mathematics , cooperative learning , geometry , pure mathematics
Analysis of ammonia, sulfide, and total dissolved particulates were carried out in the laboratory of the Sukoharjo Environmental Office. The methods are referred to SNI 19-7119.1-2005, SNI 7119-7:2017 and SNI 7119-3:2017 respectively. The main instrument used in this analysis is UV-Vis spectrophotometer. The TSP (Total Suspended Particulate) was analyzed using a vacuum pump and passed through the filter. The number of particles accumulated in the filter was analyzed gravimetrically. The resulting sulfur dioxide content is 0.41µg/m3. The value of TSP obtained was 123.7611 g/m3 and ammonia levels was 0.0014 ppm. The levels of sulfur dioxide and TSP are below the quality standard threshold values based on the Government Regulation on the Implementation of Environmental Protection and Management which are 150 g/m3 and 230 g/m3 respectively. Meanwhile, the level of ammonia is also below the threshold value of the quality standard based on the Decree of the State Minister of the Environment Number 50 of 1996, with a level value of 2.00 ppm