Year XXX, Issue 4, 2021<<Archive>>
Еxpеrimеnts
ON THE SYNCHRONIZATION OF CANDLE OSCILLATORS
In this study we will investigate an interesting collective behavior of candles. It has been observed that when several candles burn close to each other they form a common flame that exhibits oscillations in size and brightness. If two such oscillators burn to...
candle; flame; oscillator; schlieren photography; IYPT
ANALYSIS OF THE LIQUIDS COMPOSITION BY THE SOUND PRODUCED BY THEIR HEATING
When a liquid is heated and the power of the heater is high enough (about 1MW/m2), bubbles are formed at the surface of the heater. Their expansion and collapse are the source of a specific sound, known to everybody who uses a kettle to prepare water for tea o...
sound; analysis; heater; liquid; alcohol; composition; concentration
Curriculum Маttеrs
PROJECT-BASED TEACHING IN MODEL FOR MEANINGFUL AND TECHNOLOGICAL INTEGRATION OF THE ECOLOGICAL EDUCATION
Project-based learning (PBL) is a comprehensive strategy for activating students‘ cognitive potential. This opens up great opportunities for a personally motivated and constructive process of learning. Project work is an interactive strategy for implementing t...
integration; project-based training; non-formal education
MATRICULATION EXAMS IN GEOGRAPHY – FROM THE MOST DESIRED, TO THE MOST RAPIDLY AVOIDED
The article provides a retrospective review of the mandatory state matriculation examinations in Bulgarian language and the second elective subject conducted in the period 2008 – 2021. Official data obtained on the basis of applications under the Access to Inf...
Кеywords: matriculation exam in geography; mean marks; grading schemas