Masahiko Sakamoto. One consideration about the statements of educational Strategies for mathematics. 2021. 7
Masahiko Sakamoto. Consideration for consistent mathematics education which extends over an elementary school and a junior high school : for coopetation of an elementary school and a junior high school in Sizuoka. 2020. 6. 53-62
Masahiko Sakamoto. Development of a course and a method of teaching for cooperation of an elementary school and a junior high school (2) - focusing on the Verbal Problem and the Equation. 2019. 5. 45-64
JAPAN ACADEMIC SOCIETY OF MATHEMATICS EDUCATION
, THE JAPANESE ASSOCIATION OF EDUCATIONAL PSYCHOLOGY
, JAPANESE EDUCATIONAL RESEARCH ASSOCIATION
, JAPAN SOCIETY OF MATHEMATICAL EDUCATION