SCIENCE EDUCATION IN THE SCIENCE OF EDUCATION

Differentiation of sciences was recently replaced by their integration. The old pedagogical disciplines amalgamated in the new comprehensive science of education. Science education is the most dynamic part of the science of education. The previous special di...

MEDICINE IN THE EYES OF THREE SCIENCES, THREE TEACHERS AND ONE CLASS

VISUALIZATION OF HEAT PHENOMENA BY PHYSLETS®

ADAPTATION STUDY OF MOTIVATION TOWARD SCIENCE LEARNING QUESTIONNAIRE FOR ACADEMICALLY ADVANCED SCIENCE STUDENTS

In this study, the purpose is to adapt “Motivation toward science learning questionnaire” for academically advanced science students. The survey method was used for the study and examination of reliability and validity of the scores on the instrument was con...

VERBAL ASSOCIATIONS OF BULGARIAN TEENAGERS FOR “SUBSTANCE”

The article comprises the first part of a diagnostic research on the content of the concept of “substance” in the linguistic mind of Bulgarian teenagers. Focus is on the data from a free associative experiment carried out following the S (stimulus) \(\rightar...

HIGH АND LOW ORDER THINKING SKILLS IN BULGARIAN АND CANADIAN SCIENCE SCHOOL CURRICULUM

To enable young people to solve problems of life related to science, they must have thinking skills of a higher order. This means that they need to learn to analyze, plan, evaluate, think critically and creatively, generate new ideas and knowledge at schoo...

A SIMPLE EXPLANATION FROM THE SIGN OF r- VALUE FOR THE KIND OF CHARGE THAT DEVELOPS IN THE INTERMEDIATE OR THE TRANSITION STATE OF A REACTION SERIES: A ONE-HOUR PHYSICAL-ORGANIC CHEMISTRY GRADUATE CLASSROOM LECTURE

The sign of ρ (Hammett’s reaction constant) in the ionization of benzoic acids is unit positive; therefore it follows that any reaction series with positive ρ value will have the same center of charge in magnitude on the transition state. And if the sign of...

MURPHY’S LAW IN CHEMISTRY

Not only has the Murphy’s law acquired numerous supporters due to its populatity, but it has also expanded to all fields of human activity, from economy, through arts, to natural sciences. This work describes the creation and historical development of the M...

42^nd INTERNATIONAL CHEMISTRY OLYMPIAD

The paper represents some of the problems (theoretical and practical) of the 42^nd International Chemistry Olympiad and the solutions of theoretical problems. Comments of Bulgarian team presentation are given.

SOLUBILITY AND DISSOLUTION ENHANCEMENT OF IBUPROFEN BY SOLID DISPERSION TECHNIQUE USING PEG 6000-PVP K 30 COMBINATION CARRIER

Ibuprofen solid dispersions were prepared with the objective of solubility and dissolution improvement using PEG 6000-PVP K 30 combination carrier by solvent evaporation technique. The saturation solubility and <i>in vitro</i> dissolution studies showed remark...

HISTORY OF PHYSICS

The History of Physics is a textbook for students of the University of Sofia, written by Professor Ivan Lalov, f. Rector of the University of Sofia and f. Minister of Education and Science. In 13 chapters the author gives a concise presentation of the dev...

HISTORICAL GEOGRAPHY OF ETHIOPIA

The Hakluyt Society (1846) has for its object the advancement of knowledge and education, particularly in relation to the understanding of world history. It pursues this aim by publishing scholarly editions of primary narratives of travel and exploration und...

GEOGRAPHY AND JOURNEYS

This book provides detailed information about 501 islands located at different parts of the world. Most of these geographic objects can be considered as amazing tourist destinations. The book can be used as a living source in school geography. The excellent i...

СЕМЕЙНИ УЧЕНИЧЕСКИ ВЕЧЕРИНКИ

ACADEMICIAN ROSTISLAV KAISHEV – A LIFE DEDICATED TO SCIENCE