Year LXVI, Issue 1, 2023<<Archive>>
In this issue:
Sciеncе in Еducаtion
A NEW FORMULA FOR THE AREA OF THE QUADRILATERAL (READING FOR GRADE 7)
Here we derive formula for the area of a quadrilateral with angle \(45^{\circ}\) between the diagonals, which is a special case of a more general formula for the area of a quadrilateral (Haimov 2022). Along the way we obtain formulas for the area of triangles...
formula for the area оf a quadrilateral; pentagon; hexagon
THE POWER OF A POINT — A VECTOR PERSPECTIVE
Vector algebra is a very effective calculation language for doing geometry. It is expressive and succinct, and tends to foster generality and simplicity. In this article we consider from a vector perspective a series of problems concerning circles. After prese...
vector algebra; power of a point
FORMULAE FOR THE AREAS OF SOME KINDS OF POLYGONS AND ITS APPLICATION IN PROVING RELATIONS IN THEM
А new formula for the area of an arbitrary quadrilateral is applied to derive formulae for the areas of some kinds of polygons with any number of sides; these formulae are further applied to find specific relationships for concrete number of sides.
quadrilateral; polygon; area; formula; relationship
Еducаtionаl Tеchnologiеs
OBLIGATIONS AND REQUIREMENTS FOR THE QUALIFICATION AND UNIVERSITY EDUCATION OF THE INFORMATION AND COMMUNICATION TECHNOLOGIES DEPARTMENT CHAIR IN BULGARIAN SCHOOLS
The article analyzes the structure of a school institution and the place of the position of Information and Communication Technologies Department Chair in educational environments. An analysis was made of the necessary qualifications for occupying the position...
Information and Communication Technologies Department Chair; Information and Communication Technologies; System administrator; Competencies; School
THE TEST TASKS FROM THE STATE MATRICULATION EXAMINATION FOR THE INFORMATICS PROFILE DURING THE ACADEMIC YEAR 2021-2022
In the academic year 2021/2022, the first class of Informatics Specialization in Secondary school Informatics graduated and the first State Matriculation Examinations were held for the graduates of the specialization. This article makes some quantitative and q...
profiled education; informatics; state graduating exam; statistical evaluation; multiple choice questions; open-ended questions