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1.
An empirical study on basic and conceptual knowledge, procedural knowledge and problem solving among primary school students
Amalija Žakelj, Tina Štemberger, Andreja Klančar, 2025, original scientific article

Abstract: In this paper, we present the results of an empirical study examining the achievements of Slovenian elementary school students in arithmetic, with a particular focus on decimal numbers at the levels of basic and conceptual, procedural and problem-solving knowledge. The study aimed to determine whether there are differences or correlations between students' achievements in decimal numbers at these levels of knowledge and whether performance at one level can predict performance at another. Based on an empirical non-experimental study involving 100 Slovenian elementary school students, the findings revealed significant correlations and statistically significant differences between students' achievements at the levels of basic, conceptual, procedural and problem-solving knowledge of decimal numbers. Furthermore, performance at the levels of basic and conceptual, and procedural knowledge were found to predict performance in problem-solving tasks, and vice versa. The study's results indicate that gaps in basic and conceptual or procedural knowledge are reflected in difficulties when solving complex problems, where success often depends on the accuracy of intermediate steps within the solution process.
Keywords: decimal numbers, basic and conceptual knowledge, procedural knowledge, problem-solving knowledge, arithmetic, mathematics
Published in RUP: 11.07.2025; Views: 604; Downloads: 7
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2.
Inquiry‑based learning in Grade 9 mathematics : assessing outcomes across Gagné’s taxonomy
Daniel Doz, Amalija Žakelj, Mara Cotič, 2025, original scientific article

Abstract: Inquiry-based learning (IBL) in mathematics is a student-centered approach that encourages exploration, problem-solving, and critical thinking, allowing students to actively engage with mathematical concepts and discover relationships through hands-on activities and collaborative learning. Despite the growing interest in IBL within mathematics education, which has demonstrated the efectiveness of this method on students’ achievements, less is known about its impact on Gagné’s taxonomy of knowledge (conceptual, procedural, and problem-solving knowledge). This study, based on Bruner’s instructional model, compares the efectiveness of IBL against traditional teaching methods in promoting mathematical learning across Gagné’s three taxonomies of knowledge in Grade 9 algebra content, using a sample of 258 Slovenian students (132 in the experimental group). Results show that the experimental group outperformed the control group in most areas, with no signifcant diference observed in procedural knowledge. The study suggests that IBL enhances students’ conceptual understanding and problem-solving abilities by fostering deeper engagement and critical thinking but may not have the same impact on procedural fuency, which requires repetitive practice.
Keywords: algebra, equations, inquiry-based learning, mathematics, problem-solving
Published in RUP: 04.07.2025; Views: 789; Downloads: 8
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3.
A Collection of Math Competition Problems : Mathematics, undergraduate study programme 2023/2024
Slobodan Filipovski, 2024, other educational material

Abstract: The International Mathematics Competition (IMC) for university students is an annual mathematics competition open to all undergraduate students of mathematics. The IMC is primarily a competition for individuals, although most participating universities select and send one or more teams of students.
Keywords: competition, IMC, mathematics
Published in RUP: 23.07.2024; Views: 1219; Downloads: 23
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General preservers of quasi-commutativity on hermitian matrices
Gregor Dolinar, Bojan Kuzma, 2008, original scientific article

Abstract: Let ▫$H_n$▫ be the set of all ▫$n \times n$▫ hermitian matrices over ▫$\mathbb{C}$▫, ▫$n \ge 3$▫. It is said that ▫$A,B \in H_n$▫ quasi-commute if there exists a nonzero ▫$\xi \in \mathbb{C}$▫ such that ▫$AB = \xi BA$▫ Bijective not necessarily linear maps on hermitian matrices which preserve quasi-commutativity in both directions are classified.
Keywords: mathematics, linear algebra, general preserver, hermitian matrices, quasi-commutativity
Published in RUP: 03.04.2017; Views: 4176; Downloads: 290
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6.
Minimal normal subgroups of transitive permutation groups of square-free degree
Edward Tauscher Dobson, Aleksander Malnič, Dragan Marušič, Lewis A. Nowitz, 2007, original scientific article

Abstract: It is shown that a minimal normal subgroup of a transitive permutation group of square-free degree in its induced action is simple and quasiprimitive, with three exceptions related to ▫$A_5$▫, ▫$A_7$▫, and PSL(2,29). Moreover, it is shown that a minimal normal subgroup of a 2-closed permutation group of square-free degree in its induced action is simple. As an almost immediate consequence, it follows that a 2-closed transitive permutation group of square-free degree contains a semiregular element of prime order, thus giving a partial affirmative answer to the conjecture that all 2-closed transitive permutation groups contain such an element (see [D. Marušic, On vertex symmetric digraphs,Discrete Math. 36 (1981) 69-81; P.J. Cameron (Ed.), Problems from the fifteenth British combinatorial conference, Discrete Math. 167/168 (1997) 605-615]).
Keywords: mathematics, graph theory, transitive permutation group, 2-closed group, square-free degree, semiregular automorphism, vertex-transitive graph
Published in RUP: 03.04.2017; Views: 3830; Downloads: 100
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7.
Symmetry structure of bicirculants
Aleksander Malnič, Dragan Marušič, Primož Šparl, Boštjan Frelih, 2007, original scientific article

Abstract: An ▫$n$▫-bicirculant is a graph having an automorphism with two orbits of length ▫$n$▫ and no other orbits. Symmetry properties of ▫$p$▫-bicirculants, ▫$p$▫ a prime, are extensively studied. In particular, the actions of their automorphism groups are described in detail in terms of certain algebraic representation of such graphs.
Keywords: mathematics, graph theory, graph, circulant, bicirculant, automorphism group
Published in RUP: 03.04.2017; Views: 3928; Downloads: 104
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8.
On strongly regular bicirculants
Aleksander Malnič, Dragan Marušič, Primož Šparl, 2007, original scientific article

Abstract: An ▫$n$▫-bicirculantis a graph having an automorphism with two orbits of length ▫$n$▫ and no other orbits. This article deals with strongly regular bicirculants. It is known that for a nontrivial strongly regular ▫$n$▫-bicirculant, ▫$n$▫ odd, there exists a positive integer m such that ▫$n=2m^2+2m+1▫$. Only three nontrivial examples have been known previously, namely, for ▫$m=1,2$▫ and 4. Case ▫$m=1$▫ gives rise to the Petersen graph and its complement, while the graphs arising from cases ▫$m=2$▫ and ▫$m=4$▫ are associated with certain Steiner systems. Similarly, if ▫$n$▫ is even, then ▫$n=2m^2$▫ for some ▫$m \ge 2$▫. Apart from a pair of complementary strongly regular 8-bicirculants, no other example seems to be known. A necessary condition for the existence of a strongly regular vertex-transitive ▫$p$▫-bicirculant, ▫$p$▫ a prime, is obtained here. In addition, three new strongly regular bicirculants having 50, 82 and 122 vertices corresponding, respectively, to ▫$m=3,4$▫ and 5 above, are presented. These graphs are not associated with any Steiner system, and together with their complements form the first known pairs of complementary strongly regular bicirculants which are vertex-transitive but not edge-transitive.
Keywords: mathematics, graph theory, graph, circulant, bicirculant, automorphism group
Published in RUP: 03.04.2017; Views: 9578; Downloads: 99
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9.
Semiregular automorphisms of vertex-transitive graphs of certain valencies
Edward Tauscher Dobson, Aleksander Malnič, Dragan Marušič, Lewis A. Nowitz, 2007, original scientific article

Abstract: It is shown that a vertex-transitive graph of valency ▫$p+1$▫, ▫$p$▫ a prime, admitting a transitive action of a ▫$\{2,p\}$▫-group, has a non-identity semiregular automorphism. As a consequence, it is proved that a quartic vertex-transitive graph has a non-identity semiregular automorphism, thus giving a partial affirmative answer to the conjecture that all vertex-transitive graphs have such an automorphism and, more generally, that all 2-closed transitive permutation groups contain such an element (see [D. Marušic, On vertex symmetric digraphs, Discrete Math. 36 (1981) 69-81; P.J. Cameron (Ed.), Problems from the Fifteenth British Combinatorial Conference, Discrete Math. 167/168 (1997) 605-615]).
Keywords: mathematics, graph theory, transitive permutation group, 2-closed group, semiregular automorphism, vertex-transitive graph
Published in RUP: 03.04.2017; Views: 3845; Downloads: 103
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10.
Semisymmetric elementary abelian covers of the Möbius-Kantor graph
Aleksander Malnič, Dragan Marušič, Štefko Miklavič, Primož Potočnik, 2007, original scientific article

Abstract: Let ▫$\wp_N : \tilde{X} \to X$▫ be a regular covering projection of connected graphs with the group of covering transformations isomorphic to ▫$N$▫. If ▫$N$▫ is an elementary abelian ▫$p$▫-group, then the projection ▫$\wp_N$▫ is called ▫$p$▫-elementary abelian. The projection ▫$\wp_N$▫ is vertex-transitive (edge-transitive) if some vertex-transitive (edge-transitive) subgroup of Aut ▫$X$▫ lifts along ▫$\wp_N$▫, and semisymmetric if it is edge- but not vertex-transitive. The projection ▫$\wp_N$▫ is minimal semisymmetric if ▫$\wp_N$▫ cannot be written as a composition ▫$\wp_N = \wp \circ \wp_M$▫ of two (nontrivial) regular covering projections, where ▫$\pw_M$▫ is semisymmetric. Finding elementary abelian covering projections can be grasped combinatorially via a linear representation of automorphisms acting on the first homology group of the graph. The method essentially reduces to finding invariant subspaces of matrix groups over prime fields (see [A. Malnic, D. Marušic, P. Potocnik, Elementary abelian covers of graphs, J. Algebraic Combin. 20 (2004) 71-97]). In this paper, all pairwise nonisomorphic minimal semisymmetric elementary abelian regular covering projections of the Möbius-Kantor graph, the Generalized Petersen graph GP(8,3), are constructed. No such covers exist for ▫$p=2$▫. Otherwise, the number of such covering projections is equal to ▫$(p-1)/4$▫ and ▫$1+(p-1)/4$▫ in cases ▫$p \equiv 5,9,13,17,21 \pmod{24}$▫ and ▫$p \equiv 1 \pmod{24}$▫, respectively, and to ▫$(p+1)/4$▫ and ▫$1+(p+1)/4$▫ in cases ▫$p \equiv 3,7,11,15,23 \pmod{24}$▫ and ▫$p \equiv 19 \pmod{24}$▫, respectively. For each such covering projection the voltage rules generating the corresponding covers are displayed explicitly.
Keywords: mathematics, graph theory, graph, covering projection, lifting automorphisms, homology group, group representation, matrix group, invariant subspaces
Published in RUP: 03.04.2017; Views: 3685; Downloads: 97
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