作者: Masahiko Uchida
DOI:
关键词: Diagonal 、 Transverse plane 、 Base (geometry) 、 Geometry 、 Physics 、 Perpendicular 、 Surface (mathematics)
摘要: PROBLEM TO BE SOLVED: To promote the infant's creativeness. SOLUTION: This board is provided with a base 4 having required size and many projecting parts 5 arranged fixed in longitudinal transverse directions apart specified intervals on one surface thereof. The horizontal perpendicular bars 6 formed fitting holes 6a fittable onto these at coinciding arranging pitch of diagonal 7 direction. Further, has circular part pieces which are to express eyeballs animals. COPYRIGHT: (C)1997,JPO