抄録
In this paper, we devised a 3D puzzle using the MacMahon’s cubes and represented this with a 2D map by using the matrix unfolding used to calculate HOSVD. Using this map representation, we developed teaching materials to learn some of calculation processes of HOSVD. In order to investigate the visibility of the map and the difficulty level of the puzzle, the teaching materials are tried by our students and others at the Open Campus Event. As a result, it was confirmed that most users could understand the map and that the puzzle was rather easy to solve. Therefore, it was thought that the users also could understand the matrix unfolding.
