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Volume 24, Issue 1  (2015)

B.V. Toshev
Science Evaluation Indicators for Chemistry: Bulgarian Journal of Science Education [In Bulgarian]

Full text: PDF (627 K)

Education: Theory & Practice:
Z. Kostova
Anxiety in Science Education [In Bulgarian]

Full text: PDF (528 K)

Curriculum Matters:
A. Zahariev
Nomenclature Recommendations of IUPAC Related to the Chemical Terminology and Quantities, Units and Symbols Used in Chemistry [In Bulgarian]

Full text: PDF (331 K)

Teaching Efficiency:
B.H.S. Thimmappa
Higher Education Perspectives for an Exciting Educational Experience - Part V: An Indian Context

Full text: PDF (683 K)

H. Petrova
Graphical Problems in Physics Education in Secondary School [In Bulgarian]

Full text: PDF (328 K)

Personalities in Science:
O. Dimitrov, Z. Kostova
Rumen Lyubomirov Doychev (1938-1999) [In Bulgarian]

Full text: PDF (2245 K)

Bulgarians Abroad:
N. Kasabov
Brain-Like Spatio-Temporal Data Machines

Full text: PDF (643 K)

History and Philosophy of Science:
D. Platikanov
Chemistry Research in the University of Sofia: The First Hundred Years [In Bulgarian]

Full text: PDF (5434 K)

M. Atanassova
Naming of Chemical Elements

Full text: PDF (1874 K)

B.V. Toshev
Recent Papers on Constructivism in Education [In Bulgarian]

Full text: PDF (323 K)

D. Klissurski
Nayden Naydenov (1929-2014)

Full text: PDF (360 K)


Khimiya, Volume 24, Issue 1(2015)

Khimiya. 24, 20-57 (2015) Author(s): Z. Kostova:

Abstract.The article discusses the importance of emotion knowledge and especially the knowledge of anxiety in science education and mathematics for improvement of students’ achievements. A modified version of SAS (Science anxiety Scale), adapted for use in Bulgarian, was employed for assessment of students’ anxiety in the teaching of biology and health education. With the aid of this scale, examination anxiety of eight and nine grade students of the general secondary school and of nine grade students in a technical school of construction as well as anxiety of nine-twelve grades biology students in a secondary language school (compulsory and elective courses) was assessed and evaluated. The sample of students was 270. Biology examination anxiety scores were significantly reduced after immediate biology achievement tests and correlated with delayed achievement tests. The results showed dependence of anxiety on achievement test items’ difficulty, achievement test attitudes, and individual physical, psychological and social students’ characteristics as well as on students’ aims and goals. Anxiety assessment simultaneously with academic achievement assessment and evaluation proved the importance of individual approach to student’s development of emotional intelligence for his/her personal progress in biology learning. Examination anxiety was reduced with the aid of interactive teaching strategies and techniques, with preliminary determination of the reliability and validity of tests as well as with assessment and evaluation of test items’ difficulty and discriminative ability. Biology examination anxiety is a distinct type of science anxiety.

Keywords: science anxiety, biology examination anxiety, anxiety assessment scale, biology anxiety and teaching


Khimiya. 24, 58-63 (2015) Author(s): A. Zahariev:

Abstract.The IUPAC recommendations related to the names and symbols of chemical elements, approved collective names of like elements, the system for describing of ionic charges and oxidation numbers as well as some new definitions have been commented. Some proper examples have been given.

Keywords:IUPAC recommendations, symbols & names, ionic charges, oxidation numbers, collective names, mass, mole and volume fractions


Khimiya. 24, 64-87 (2015) Author(s): B.H.S. Thimmappa:

Abstract.The universities and the higher educational institutions, being embodiment of their strengths and collective aspirations, help reshape the idea of developed India. The diversity of the higher education-trained workforce is of concern, as the economy needs scientists and innovators who can work with diverse collaborators in an increasingly open marketplace. Best practices for developing national interest, education revolution, change challenges, and random perspectives are presented. The challenge of changing higher education landscape is huge, and a significant shift in mindset and a disciplined lifestyle are necessary to have sufficient number of high quality skilled workers available on a consistent basis in the decades to come. India can emerge as a global platform for higher education and high quality research with a policy environment which is predictable, transparent and fair. We have to make concerted efforts and investment to achieve progress in certain key areas of education, energy, science and technology. The new developments must make existing education process and delivery systems more efficient and effective. The fundamental reform agenda for higher education will be to improve the quality and competitiveness of higher education and research, and empower individuals and society committed to the progress of the nation.

Keywords: higher education reforms, Indian perspectives, quality of education, education processes, teaching and scholarship, learning society, execution issues


Khimiya. 24, 88-94 (2015) Author(s): H. Petrova:

Abstract.Complete classification of graphical problems in physics education is presented. Methods of solving graphical problems are commented. A proper manual for solving graphical problems with students is presented.



Khimiya. 24, 95-102 (2015) Author(s): O. Dimitrov, Z. Kostova:

Abstract.Rumen Lyubomirov Doychev’s life and professional activities are briefly described. He was admired lecturer for the students, earnest researcher and respected colleague. His teaching and research focused on promising new branches of biology - ecology and ethology, and their application in protecting nature and biological diversity.

Keywords: Rumen Doychev, ethology, ecology, biological education, nature conservation, environmental education


Khimiya. 24, 107-124 (2015) Author(s): D. Platikanov:

Abstract.The history of the scientific research in chemistry carried out through a century at the University of Sofia is briefly presented. Three arbitrary periods are distinguished: 1889 – beginning of 1920’s, research in classical chemistry of 19th century; 1920’s – end of 1950’s, radical renovation which led to modern scientific research on European level in 1940’s; beginning 1960’s – end of 1980’s, significant extensive development including new research directions and themes. The directors of research, professors and heads of departments are presented.

Keywords: Sofia University, Faculty of Physics and Mathematics, science, research, history


Khimiya. 24, 125-144 (2015) Author(s): M. Atanassova:

Abstract.A summary review for the origin of the names and symbols of all chemical elements discovered up to now are presented along with the reasons for proposing these appellations.

Keywords: chemical elements, naming, discovery


Khimiya. 24, 145-149 (2015) Author(s): B.V. Toshev:

Abstract.A list of selected papers on the constructivism in education is presented. The sources are published in 2012 and 2013. It is expected this thematic bibliography to help the reader to understand the meaning and use of this new educational paradigm that seems to be hard to introduce in the Bulgarian school practice.

Keywords: bibliography, constructivism, teaching and learning, constructivist environment


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