Pentacubes consist of five Cubes and there are in total 29 different objects. Arranging the pentacubes to given constructions train your brain and establish your 3D-thinking. 3D-thinking is part of any intelligence test, but not trained in education. The pentacubes are turnable in up to 24 rotated views and it is challenging your mind, to detect the same pentacube in a rotated view. The mental rotation is the most missing competence to solve many other mathematical tasks. All tasks can be used for presentation in schools, using real wooden pentacubes.