Some students feel that mathematics is less fun because the lack basic knowledge of which leads to a confidence in learning. Especially during COVID-19 outbreak, distance learning was needed, including mathematics, and many had difficulties Learning arise can interfere with subsequent process have significant impact on students' academic performance mathematics. This study aims determine at Jun...

background: in dental practical classes, the acoustic environment is characterized by high noise levels in relation to other teaching areas. the aims of this study were to measure noise levels produced during the different dental learning clinics, by equipments used in dental learning areas under different working conditions and by used and brand new handpieces under different working condition...