Lyubka Aleksieva, Iliana Mirtschewa, Snezhana Radeva Sofia University “St. Kliment Ohridski” (Bulgaria) https://doi.org/10.53656/math2021-6-6-pre Abstract. Early STEM education has a great ...

Веселин Златилов Институт по математика и информатика – БАН https://doi.org/10.53656/math2021-6-5-nef Резюме. Статията е посветена на развитието на неформалните лингвистични турнири ...

Toni Chehlarova Institute of Mathematics and Informatics – Bulgarian Academy of Sciences (Bulgaria) https://doi.org/10.53656/math2021-6-4-the Abstract. The main task considered in ...

Margarita Gocheva, Nikolay Kasakliev, Elena Somova University of Plovdiv “Paisii Hilendarski” – Plovdiv (Bulgaria) https://doi.org/10.53656/math2021-6-3-ele Abstract. The COVID-19 pandemic changed ...

Маргарита Ламбова, Ваня Стоянова Икономически университет – Варна https://doi.org/10.53656/math2021-6-1-kri Резюме. В представеното изследване са разгледани проблеми при възприятието и популярни ...

NATURAL SCIENCE AND ADVANCED TECHNOLOGY EDUCATION ANNUAL CONTENTS / VOLUME 30, 2021 Обучение по ПРИРОДНИ НАУКИ и върхови технологии ГОДИШНО ...

Jamil Ahmad University of Botswana (Botswana) https://doi.org/10.53656/nat2021-6.01 Abstract. The relationship between entropy and reversible heat and temperature is developed using ...

Калин Чакъров, Александрия Генджова Софийски университет „Св. Климент Охридски“ https://doi.org/10.53656/nat2021-6.02 Резюме. Химията често се възприема като труден предмет, а начинът, ...

Denitsa Vasileva Sofia High School of Mathematics “Paisiy Hilendarski” – Sofia (Bulgaria) https://doi.org/10.53656/nat2021-6.06 Abstract. Balloons may be a thing children ...

Satya Narayan Chaulia Rajendra (Auto) College (India) https://doi.org/10.53656/nat2021-6.03 Abstract. Semi-empirical quantum chemical calculation was made to study the nucleophilicity of ...