We have previously developed large tactile play equipment and ride-on play equipment in the form of a sphericon and a hexasphericon, which are solid geometric objects based on even-numbered regular polygons that maintain their center of gravity at the same level when in motion. More recently, we have focused on objects based on odd-numbered regular polygons that also maintain their center of gravity, and are advancing the study towards the development of play equipment with a reciprocating motion. In our previous study, we developed reciprocating tactile play equipment based on equilateral-triangular objects. Here, we examine the structure of a regular pentagonal sphericon and present two types of tactile educational play equipment that we have developed.

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　　A study of smartphone displays, used in a museum support website, to produce pictograms of high quality legibility and intelligibility. The first goal was to produce high quality pictograms on smartphones that had figure thicknesses which improved the legibility and intelligibility. The second goal was to produce a museum support website for smartphones using pictograms of figure thicknesses indicated by the results of the experiments. The effectiveness of this website was verified through further experimentation at the museum. The results indicate that thin figures were ranked higher in terms of legibility and intelligibility.

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