2019 年 12 巻 p. 33-48
A fundamental problem in mathematics education is “What can we do for students to enhance their mathematical ability and achievement and how can we do it?” This paper searches for a promising solution to this problem. To that end, the author focuses on the lesson study approach, specifically adopting the same approach adopted by the mathematician George Polya, who reflected on his experience and described his methods of mathematical problem solving. As a mathematics educator, the author shares his experience of two types of lesson study of primary school mathematics, and proposes a framework of a dynamic cycle in the lesson study of school mathematics for promoting the professional development of mathematics teachers and educators. This professional development may improve the mathematical ability and achievement of students at schools.
