We propose a new method for unfolding polyhedrons. With our method, we firstly place all polygonal faces on an unfolded plane, then gather them by connecting faces regarding the connectivity in 3 D. We call this method 'face-gathering approach' and the established method 'sequential approach'. We compare both methods in view of the ability of generating lowcost patterns. And we also denote that our approach is applicable for generating reasonable patterns such that are symmetrical and directions of faces are preserved.

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This paper is intended as a consideration of the drawing method in the beginnings of“Prospettiva solida”in Italy. The object of study is Baldassarre Peruzzi who was a chief architect of The Basilica of St. Peter's drew the plan and the elevation for“The Stage Set of<<Le Bacchide>>”in 1531. To begin with, we consider the form of“The plan for the stage set of<<Le Bacchide>>”. Next, we consider the Peruzzi's“Prospettiva solida”based on the correlation between“The plan for the stage set of<<Le Bacchide>>”and“The elevation for the stage set of<<Le Bacchide>>”. These results lead to the conclusion that Peruzzi recreated a street approximately 114 long of an actual distance on the stage.

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Distance education, which is mainly used on the class of lectures, has been prevailing by various media on the Internet environment.
The users of this system can study the class at whenever and wherever they want if they are in the Internet environment.
And this way of study is the advantage against other ways of studies. However, this way of study is not suited for learning“the movement”such as physical exercise of human beings.
When the object of distance education is set to“Learning Movement”, it is necessary to recognize the difference between the learners' movements and the sample movements.
The aim in this research is the construction of the distance learning system for learning the movement of human body.
And, it has aimed to do an educational evaluation by using the technology of CG and image processing.

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