Mirror (left-recursive) Gray Code
Valentin Bakoev
”St. Cyril and St. Methodius” University of Veliko Tarnovo (Bulgaria)
https://doi.org/10.53656/math2023-6-1-mir
Abstract. Here we consider a version of the Binary Reflected Gray Code (BRGC, or Graycode for short), called the mirror Gray code – in parallel and in comparison to the Gray code. We discuss some sources where the two codes are not distinguished and the reasons why…
Tasks from Online Competition “VIVA Mathematics with а Computer”: a Resource for Work in STEM Centers
Georgi Gachev, Petar Kenderov, Toni Chehlarova
Institute of Mathematics and Informatics,
Bulgarian Academy of Sciences
https://doi.org/10.53656/math2023-6-2-the
Abstract. It is shown how a well-known task, also used in the „VIVA Mathеmatics with Computer“ and “Theme of the Month” online competitions, can become a base for
regular classes and/or explorations in school STEM centers...
The Construction of Valid and Reliable Test for the Divisibility Area
Daniela Zubović, Dina Kamber Hamzić
Faculty of Science, University of Sarajevo (Bosnia and Hercegovina)
https://doi.org/10.53656/math2023-6-3-the
Abstract. Understanding divisibility at the primary school level is a strong predictor of
students’ mathematical achievements in secondary education…
Quality of Blended Learning Courses: Students’ Perspective
Silvia Gaftandzhieva1), Rositsa Doneva1), Sadiq Hussain2),
Ashis Talukder3,4), Gunadeep Chetia2), Nisha Gohain2)
1)University of Plovdiv “Paisii Hilendarski” – Plovdiv (Bulgaria)
2)Dibrugarh University – Dibrugarh (India)
3)Khulna University – Khulna (Bangladesh)
4)Australian National University – Canberra (Australia)
https://doi.org/10.53656/math2023-6-4-qua
Abstract. This research paper focuses on studying students’ perspectives on the quality of online course developed to support traditional face-to-face learning, specifically exploring their satisfaction levels….
Mistakes from the School Mathematics that Impact Students’ Performance in Mathematics Competitions: an Example
Nadezhda Aplakova
Sofia University
https://doi.org/10.53656/math2023-6-5-mis
Abstract. The knowledge and skills a student needs in order to perform well on mathematics competitions are usually more and at a higher level compared to school mathematics...
Leontief Model with MS Excel Solver
Velika Kuneva1), Mariyan Milev2)
1)Agricultural University – Plovdiv, Bulgaria
2) Sofia University "St. Kliment Ohridski"
https://doi.org/10.53656/math2023-6-6-leo
Abstract. This article presents an applied solution of the Leontiev's balance model using MS Excel software...
Twenty-seventh Junior Balkan Mathematical Olympiad
Ivaylo Kortezov, Miroslav Marinov
Institute of Mathematics and Informatics,
Bulgarian Academy of Sciences
https://doi.org/10.53656/math2023-6-7-twe
Abstract. Тhe paper includes problems from the team selection tests for the national team for JBMO 2023, as well as model solutions and short comments on the performance of the contestants...
