STEM education has become important in many countries around the world. STEM education can begin while students are very young. However, earlier research has shown that one of the most important factors influencing the decision on scientific research selection is the middle school science classes. In this research, we extract database from Scopus to evaluate the scientific results of publications in the field of STEM education in middle school in the period 2000–2020. A data set of 272 academic papers was indexed to monitor the development of this field by Scopus. The results of the quantitative analysis showed that researches on STEM education in middle schools have boomed in the last 5 years, mainly in the USA. The trend of research collaboration in the field of STEM education in middle schools is not strong. The research topics are quite diverse, focusing on a number of issues: gender, engineering education, curriculum, etc. This study has some limitations, including that only data from the Scopus database were selected and manually filtered, so our analyses totally depended on the quality of the input information imported from the Scopus database.

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Since the implementation of the General Education Program Year 2018, schools and teachers have the autonomy in choosing teaching content, and teaching methodologies suitable to the practical conditions of local and schools. To meet the renovation requirements of world education and Vietnamese educational, teachers need to have the capacity to develop curriculum. Curriculum development is a process that is carried out continuously with the aim of reviewing, updating, supplementing and developing to meet the needs of society, scientific achievements and technology as well as labor market requirements. The purpose of this study is to discover the factors affecting the curriculum development capacity of primary school teachers in the Northern mountainous area of Vietnam. The exploratory factor analysis (EFA) method was used on the basis of the survey results from 261 primary school teachers. Since then, four factors affecting the program development capacity of primary school teachers have been identified: physical facilities (45.710%); the direction and supervision of managers (9,940%); the ability to understand the general education program year 2018 (7.046%) and the capacity to design lessons (4.875%). This is the premise that suggests some recommendations to improve the program development capacity for teachers in the Northern mountainous areas of Vietnam.

Grade 1 is the first grade of primary school level, students begin to move from the main play-based activity to the main learning-based activity. Because it is just the beginning, the learning activity is still new and confusing for the children. The games have interesting and helpful content suitable for children's perceptions. In addition, in the innovative education in Vietnam according to competency-based learning, learning games are extremely necessary for teachers. In this article, we clarify the concept and advantages of learning games in the process of teaching Mathematics and propose a process for designing and organizing learning games. At the same time, illustrate an activity of teaching Mathematics in primary school which using learning games.