E-MANUAL FOR THE STUDENTS OF 10\(^{TH}\) GRADE: “FROM THE ATOM TO THE SPACE”

CONVENTIONAL TEACHING VERSUS POWER POINT PRESENTATION: A COMPARATIVE STUDY FOR UNDERGRADUATE ORGANIC CHEMISTRY STUDENTS

THE ESSAY AS AN INTEGRATIVE CONSTRUCT: NORMATIVE, PROCEDURE AND ASSESS-RESULTATIVE ASPECT

Essay is one of the forms of materialization of concept on integration of education’s content. Simultaneously, it represents unified integration of skills and content. By essay competence of the person for communication in different contexts is realized and...

ISOLATION AND CHARACTERIZATION OF COLLAGEN FROM THE SKIN OF SYRIAN SHEEP

Acid soluble collagen (ASC) and Pepsin soluble collagen (PSC) from the skin of Syrian sheep were isolated and characterized. The yields of ASC and PSC were 6% and 14.4%, based on the weight of skin. ASC and PSC were exhibited a maximum absorbance at 230 an...

DEVELOPING STUDENTS GRAPHICAL KNOWLEDGE AND SKILLS THROUGH SOLVING PHYSICAL PROBLEMS WITH GRAPHICAL METHOD

Classification of graphical problems in physics education and algorithms for their solution are both presented. The application of graphs in teaching and learning Physics helps students to understand easier the meaning of natural laws.

THE PROBLEM IN THE CONTEXT OF REFLECTIVE TECHNOLOGY FOR TEACHING BIOLOGY

This paper presents an idea about for various types of teaching and learning problems used as tools for developing students’reflective skills in Biology education. The structure of these types of problems is explained in the context of cognitive-performers, c...

44TH INTERNATIONAL CHEMISTRY OLYMPIAD

The paper represents problems (theoretical and practical) of the \(44^{\text {th }}\) International Chemistry Olympiad and the solutions of theoretical problems. Comments of Bulgarian team presentation are given.

AB INITIO STUDY ON STRUCTURAL PROPERTIES AND VIBRATIONAL ANALYSIS OF Z-(1-PYRIDIN-2-YL-METHYLENE) THIOSEMICARBAZONE COMPOUND

In this work, we will report a combined experimental and theoretical study on molecular structure, vibrational spectra and energies of Z-(1-pyridin-2-yl-methylene)thiosemicarbazone. The FTIR spectra of Z-(1-pyridin-2-yl-methylene)-thiosemicarbazone molecule...

ALEXANDER ATANASSOV PANAIOTOV, DSC

This material traces the life and creative path of Dr. Alexandar Atanasov Panaiotov, DSc, an Associate Professor at the Department of Biology Education, University of Sofia. His name stands out as a founder in the development of contemporary methodology of...

COMPUTER ASSISTED LEARNING SYSTEM FOR STUDYING ANALYTICAL CHEMISTRY

The article describes the system of computer assisted learning (CAL) designed for classes in analytical chemistry. The system is developed in the Ural State University of Economics (USUE, Yekaterinburg, Russia). The CAL system consists of two subsystems for...

С РАКЕТНА ГРАНАТА КЪМ МЕСЕЦА: БОРБА С ЕДНА ЛЕДЕНА ЕПОХА В ГОДИНАТА 3000 СЛЕД ХРИСТА. 3.¹⁾