EJMT Abstract

Since 2022, one ICT device per student has been available at junior high schools in Japan. However, the use of ICT in mathematics education in Japan is still low. In this research, we asked first-year junior high school students to consider the cutting plane of a cube using 3D dynamic geometry software in the teaching of spatial figures. We confirmed that the students’ knowledge and skills of the cubic cutting plane improved when they operated the 3D dynamic geometry software independently while consulting with each other. On the other hand, regarding students’ development of “thinking, judgment, and expression skills” we found that the students were visually misled at the stage of drawing 3-D figures on a flat surface.