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Natural Science and Advanced Technology Education
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Home Chemistry Contents of Natural Science and Advanced Technology Education, 2021

Natural Science and Advanced Technology Education, 3/2021, vol. 30

in Contents of Natural Science and Advanced Technology Education, 2021

FROM THE RESEARCH LABORATORIES

Generation of NO2 by Lead Nitrate Pyrolysis: Never Do Modifications a Prima Vista

Vladimir M. Petruševski
Ss. Cyril and Methodius University – Skopje (North Macedonia)

https://doi.org/10.53656/nat2021-3.02

Abstract. Generation of nitrogen dioxide is a well-known demonstration/experiment, usually performed by pyrolysis of Pb(NO3)2…

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Computational Analysis of the Messenger RNA Variants Encoding Two Isoforms of the High-mobility Group box 1 Protein

1) Luchezar Karagyozov, 2) Jordana Todorova
1) Sofia University “St. Kliment Ohridski” (Bulgaria)
2) “Roumen Tsanev” Institute of Molecular Biology – BAS (Bulgaria)

https://doi.org/10.53656/nat2021-3.03

Abstract. High-mobility group box 1 protein (HMGB1) is a multifunctional nonhistone chromosomal protein…

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EXPERIMENTS

Problem of the 8-th Experimental Physics Olympiad, Skopje, 8 May 2021 Determination of Planck constant by LED

Todor M. Mishonov 1), Aleksander P. Petkov 1), Matteo Andreoni 1),
Emil G. Petkov 1), Albert M. Varonov 1),
Iglika M. Dimitrova 1), 2), Leonora Velkoska 3),
Riste Popeski-Dimovski 3)
1) Georgi Nadjakov Institute of Solid State Physics – BAS (Bulgaria)
2) University of Chemical Technology and Metallurgy (Bulgaria)
3) “Ss. Cyril and Methodius” University – Skopje (R. N. Macedonia)

https://doi.org/10.53656/nat2021-3.03

Abstract. This is the problem of the 8th International Experimental Physics Olympiad (EPO8). The task of the EPO8 is to determine Planck constant ħ = h/2p using the given set-up with LED…

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CURRICULUM MATTERS

Professional Dispositions of Graduate Pre-service Mathematics Teachers among Three College of Teacher Education in Ethiopia

Dr. Anteneh Tefera 1), Prof. Mulugeta Atnafu 2), Dr. Kassa Michael 2)
1) Dire Dawa University (Ethiopia)
2) Addis Ababa University (Ethiopia)

https://doi.org/10.53656/nat2021-3.04

Abstract. The general objective of this study was to examine the professional disposition (attitude and self-efficacy) of pre-service teachers hold at the end of teacher education programs in terms of gender and modality…

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NEW APPROACHES

Main Didactic Aspects Related To The Applying Of Stem Technology In Science Education

Dr. Hristina Petrova
University of Plovdiv “Paisii Hilendarski”

https://doi.org/10.53656/nat2021-3.05

Absract. STEM технологията е иновативна образователна технология…

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Development Of The Hypotheses For The Biochemical Origin Of Life

Assoc. Prof. Zdravka Kostova, DSc.
Department for Information and In-Service Training of Teachers
Sofia University

https://doi.org/10.53656/nat2021-3.06

Absract. Analyzes the main positions and critiques of leading hypotheses about the biochemical origin of life as a result of new achievements in natural sciences and technologies...

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