Ebook Cambridge Primary Mathematics (Learner's Book 1) helps first graders get acquainted with math through lessons in counting, geometry, fractions, measurement and statistics.

Ebook Cambridge Primary Mathematics (Learner’s Book 2)helps elementary students get acquainted with mathematics through visual lessons, practical exercises and group projects.

Ebook Cambridge Primary Mathematics (Learner’s Book 5) helps elementary students explore math through topics: coefficients, geometry, statistics, sequences, fractions.

Ebook Cambridge Primary Mathematics (Learner's Book 4) helps elementary students develop math skills, logical thinking and problem solving. Content includes arithmetic, geometry, measurement, statistics, with a variety of exercises and creative group activities.

This talk explores the interconnected and critical issues of competencies, applications, and assessments in the teaching and learning of school mathematics. We examine the dual roles of competencies as both helpful and questionable, the limits and significance of applications, and the unintended consequences of assessments.

This research investigates the effective integration of Python programming and visual aids in teaching mathematics at high schools in the Mekong Delta region. Recognizing the transformational power of technology in education, the study utilizes Python's capabilities to design interactive and engaging visual tools for mathematics instruction.

The terms model and modeling are central concepts in mathematics and physics teaching. It is known, however, that the focus of the perspectives on these concepts in the two subjects are shifted against each other.

This article highlights the importance of applying Realistic Mathematics Education (RME) in teaching mathematics at primary schools. It serves as a tool to cultivate a deeper, more intuitive understanding of mathematics among primary students, aligning with educational trends and specific educational objectives delineated in the 2018 Mathematics curriculum in Vietnam.

This paper develops a system of practical exercises to enhance the mathematical problem-solving competencies of fifth-grade students using Realistic Mathematics Education. The novelty of this study lies in creating tasks grounded in meaningful contexts, aimed at fostering mathematization and deeper conceptual understanding.

The thesis "Stability of some classes of degenerate two-phase difference systems with delay" is to study the stability of degenerate two-phase systems with mixed delay in the direction of variation; Stability and dissipation in finite domain of degenerate 2-D system with variable delay; Evaluation of the gain set and control design for a degenerate 2-D system in the Roesser model with variable delay;... Please refer to it!

In the first chapter, we introduce the concept of profinite groups and study their basic properties; We define cohomology groups and investigate their functorial properties; Then we introduce Galois descent and give a correspondence between equivalence classes of twisted forms and cohomology classes under some conditions which will be described explicitly.

The dissertation is written on the basis of the paper published in Annales Polonici Mathematici, the paper published in Acta Mathematica Vietnamica and the paper published in Results in Mathematics.

In the dissertation, we consider the problem of finding the shortest path between two points along a sequence of adjacent triangles in a general setting. The sequence of triangles is replaced by a sequence of ordered line segments. The 3D space is replaced by a Euclidean space.

In this thesis, we study some results of f-minimal surfaces in product spaces with the following purposes: State the relation between the f-minimal surfaces and the selfsimilar solutions of the mean curvature flow; state some properties of the f-minimal surfaces in the product spaces; construct some Bernstein type theorems, halfspace type theorems for f-minimal (f-maximal) surfaces in product spaces; state some results on the higher codimensional f-minimal surfaces.

The dissertation has five chapters and a list of references. The chapters concentrate on the following issues: In Chapter 1, we recall some classical results of the problem and some basic concepts from variational analysis and nonsmooth analysis. In Chapter 2, we investigate some new models of nonlinear nonlocal regularity; Chapter 3 is devoted to the study of metric perturbation of Milyutin-type regularity on a fixed set under composition of a set-valued mapping and a Lipschitz single-valued mapping;...

The research related to this dissertation was supported by Vietnam National Foundation for Science and Technology Development (NAFOSTED) and Hanoi National University of Education.

Objectives: The main objective of the dissertation is to research and develop fuzzy clustering techniques on remote sensing image data in order to improve accuracy and improve clustering quality of clustering algorithms.

The dissertation has four chapters: Chapter 1 - Background Materials; Chapter 2 - Analysis of an Algorithm in Indefinite Quadratic Programming; Chapter 3 - Qualitative Properties of the Minimum Sum-of-Squares Clustering Problem; Chapter 4 - Some Incremental Algorithms for the Clustering Problem.

The dissertation is divided into four chapters: Chapter 1 - Preliminaries; Chapter 2 - Lyapunov exponents for dynamic equations; Chapter 3 - Bohl exponents for implicit dynamic equations; Chapter 4 - Stability radius for implicit dynamic equations.

The dissertation has four chapters: Chapter 1 - Existence of solutions; Chapter 2 - Stability for global, local and stationary solution sets; Chapter 3 - Continuity and directional differentiability of the optimal value function; Chapter 4 - Stability for extended trust region subproblems.