Đánh giá năng lực giao tiếp toán học của học sinh thông qua nhiệm vụ mở về chủ đề vectơ

Tóm tắt

In the current context of development and integration, the Mathematics general education program 2018 focuses on the development of learners’ mathematical competencies, including the competency to communicate in mathematics. The study was conducted with 36 grade 10 students, using 7 open tasks, related to the Vector chapter, with difficulty levels 3 and 4 according to PISA classification. The aim of this study is to assess students' mathematical communication competency, adapting the scale of Cai et al (1996) into the geometric content to create a specific scale consisting of 5 levels, 4 elements of each level including presentation, reasoning, using language and drawing. The results show that the students' mathematical communication competency was mainly at the average level (level 2), the number of students reaching the low level 0 and 1 was approximately 1/3 and the near proficiency level (level 2) was 1/4. In addition, the students could not explain mathematical results in oral form as well as in written form. Besides, open tasks created a communication environment in which mistakes    in students' understanding of vector knowledge were revealed.