UNDERSTANDING THE CONCEPT OF DIGESTIVE SYSTEM IN BIOLOGY USING COMPUTER SIMULATION

This study examined understanding the concept of digestive system in biology using computer simulation. It also determined whether the performance of the students would vary with gender when exposed to computer simulation package (CSP) and biology instructiona...

FORMING KEY COMPETENCIES BY PROBLEM-BASED LEARNING OF CHEMISTRY IN SECONDARY SCHOOL

The modern society sets to young people a variety of requirements and challenges. They are expected to take the initiative, to react quickly in new and unknown situations, to collect new information. Therefore, a need for changing in educational policies and p...

SNAPSHOT OF SCIENCE CLASSROOM TEACHING FROM THE POINT OF VIEW OF IDEAS OF CONSTRUCTIVISM: A CASE STUDY – SECONDARY SCHOOLS IN SOFIA, BULGARIA

This paper provides the argument for in-service teacher training for secondary science educators in Bulgaria. Teachers need content knowledge as well as updated teaching methodologies. Observations of Bulgarian science classrooms confirmed the results of previ...

EXPLANATION OF FACTS AND PHENOMENA IN CHEMISTRY EDUCATION – CONSTRUCTIVIST APPROACH

In our days the development of science education is based on the constructivist ideas. In these ideas most important for studying is the own experience of the students in their interaction with the environment. Considering the goals of chemistry education, the...

APPLICATION OF REFLECTIVE APPROACH TO THE BIOLOGY TEACHING IN SECONDARY SCHOOLS (9th – 11th GRADE)

The paper advocates for the application of reflective approach to the Biology teaching in the secondary schools (9the secondary schools (\(9{ }^{\text {th }}-11^{\text {th }}\) grades). The main features of this approach are carefully described. The correspondi...

TWO INVESTIGATIONS OF EXAMINERS’ PERCEPTIONS OF PRIOR KNOWLEDGE REQUIRED FOR SOLVING STOICHIOMETRIC PROBLEMS AND ITS RELATIONSHIP TO STUDENTS’ PRIOR KNOWLEDGE

The aim of this paper is to examine three interrelated research questions: (1) what prior knowledge do examiners perceive as required for solving a stoichiometric problem considered in this study; (2) which of the perceived prior knowledge are needed to be pri...

ABOUT THE CHEMISTRY OF THE BEER

In the paper is presented the technology of the production of beer today. The technology of beer production is connected with transformation of different chemical substances in the starting products during the technological processes. The information about pro...

NOBEL LAUREATES IN CHEMISTRY FROM THE TERRITORY OF FORMER YUGOSLAVIA

Until the disintegration of the former Yugoslavia, SFRY (1991/92), for 74 years (from 1918) people of the region lived in a common country and a single common scientific and cultural-linguistic area (creating a unique school system, founding numerous school-e...

THE METEORITE FROM BELOGRADCHIK

For the first time the Bulgarians have the opportunity to see how the meteorite of Belogradchik (Virba) looks like: the first picture is from the Hungarian Museum of Natural History in Budapest; the second picture is from Natural History Museum in London.

BINET CONSTRUCTION IN ONLINE STEREO 3D VISUALIZATION

The present paper describes an interactive online stereoscopic 3D visualization aimed at e-learning rigid body mechanics. The visualization is realized using a numerical simulation. This learning tool demonstrates free rigid body motion while visualizing the B...

TEACHING SCIENCE IN THE BULGARIAN SCHOOLS FOR GIRLS (1897): NATURAL HISTORY

ВТОРИ НАЦИОНАЛЕН КОНГРЕС ПО ФИЗИЧЕСКИ НАУКИ 25 – 29 септември 2013 г., гр. София