Papers

Mathematics Papers

Reversible Nets of Polyhedra, to appear in LNCS(2016) (with S. Langerman, and K. Matsunaga), LNCS (2016)
A Criterion for a pair of polygons to be reversible, (with H.Seong), Graphs and Combinatorics.Vol.31(2015), 347-360
Decision Algorithm for Reversible Pairs of Polygons,(with D.Rappaport and H.Seong),Discrete Applied Math.Vol.178(2014),19-26
Atoms for Parallelohedra, (with M. Kobayashi, H. Nakagawa, G. Nakamura and I. Sato), “Geometry-Intuitive, Discrete and Convex”, Bolyai Society Math. Studies, Vol.24 (2013), 23-43, Springer-Verlag
On the diagonal weights of inscribed Polytopes, (with I. Sato), Elemente der Mathematik, Vol.68, Issue 3,(2013)89-92, European Math Soc.
An Algorithm for Determining whether a Pair of Polygons is Reversible, Frontiers in Algorithmics and Alogorithmic Aspects in Information and Management, LNCS7924(2013), 2-3(with H. Seong)
Tessellabilities, Reversibillities, and Decomposabilities of Polytopes,GSI 2013, LNCS8085(2013),215-223 (with I. Sato and H. Seong )
Operators which preserve reversibility, (with H. Seong), Computational Geometry and Graphs, LNCS8296(2013), 1-19
A Note on the Existence of a Universal Polytope among Regular 4-Polytopes, J. Indones. Math. Soc. Vol. 19, No.1(2013),41-47(with S. Hitotumatu and I. Sato)
On Reversibility among Parallelohedra, Computational Geometry, LNCS 7579 (2012) , 14-28 (with I. Sato and H. Seong)
Determination of the Element Numbers of Regular Polytopes, Geometriae Dedicata, Vol.159(2012), 89-97, (with S. Hitotumatu and I. Sato)
Determination of All Tessellation Polyhedra with Regular Polygonal Faces, Computational Geometry and Graph Theory, Lecture Notes in Computer Science, Springer Vol.7033, 1-11 (2011) (with T. Kawabata et., al.)
Minimum Perimeter Developments of the Platonic Solids, Thai J. of Math, 9(3), 461-487 (2011) (with G. Nakamura, X. Chen and M-J. Ruiz)
Arrangements of n points whose incident-line-numbers are at most n/2, Graphs and Combinatorics, 27(3), 321-326 (2011) (with H. Ito, M. Kobayashi, and G. Nakamura)
The Element Number of the Convex Regular Polytopes, Geometriae Dedicata, Vol.151. Issue 1, 269-278(2011), Springer.(with I. Sato)
Math as I like it, -Problems and Conjectures on Polyhedra- Severino V. Gervacio International Conference on Graph Theory and Combinatorics, The DLSU Mathematics Inbox, Special issue 2009, 13-36.(2010)
Element Number of the Platonic Solids, Geometriae Dedicata, Vol.145, Issue1,181-193 (2010), Springer-Verlag.( with H. Maehara, G. Nakamura, and I.Sato)
Chromatic Numbers of Specified Isohedral Tilings, Computational Geometry and Graph Theory, Lecture Notes in Comput. Sci. Springer-Verlag 4535,14-24 (2008) (with C. Nara) MR2672379
Dudeney Transformation of Normal Tiles. Computational Geometery and Graph Theory,Lecture Notes in Computer Science Vol.4535 (2008), 1-13 (with M. Kobayashi and G. Nakamura) MR2672378
Universal Measuring Boxes with Triangular Bases,Amer. Math. Monthly,Vol.115,No.3,(2008)195-201(with H. Fukuda, C.Nara, T. Sakai and J. Urrutia) MR2395030
Developments of Polyhedra Using Oblique Coordinates. J. Indonesian Math. Society 13,99-114(2007)(with C. Nara)
Tile Makers and Semi-Tile Makers.Amer. Math. Monthly 114, 602-609(2007) MR2341323 (2008j:52032)
Infinite Series of Generalized Gosper Space Filling Curves. Discrete Geometry, Combinatorics and Graph Theory,Lecture Notes in Comput. Sci. Springer-Verlag 4381, 1-9(2007)(with H. Fukuda, H. Ito and G. Nakamura)MR2364743 (2009a:28019)
Tilings and fractals from developments of doubly-covered squares Matimyas Matematika, J. Philippines Math. Soc. Vol.29, No.3, 15-24(2006) (with C.Nara)
Self-Replicating Tilings and Fractals from Developments of Doubly Covered Squares. Proc. .lnt'l .Conf. .Math. Nat. Sci.(ICMNS),17-22(2006)(with C.Nara)
Equidistant Pairs on Two Lattice Lines. The Bulletin of the Higher Education Research Institute, Tokai University 14, 65-72(2006) (with M. Kobayashi, G.Nakamura and C. Nara)
Convex Developments of a Regular Tetrahedron Computational Geometry : Theory and Applications. 34(1),2-10 (2006)(with K. Hirata, M. Kobayashi and G. Nakamura)MR2205942 (2006k:52027)
Editorial [Special issue on the Japan Conference on Discrete and Computational Geometry 2004]. Held at Tokai University, Tokyo, October 8-11, 2004. Comput.Geom. 34 (2006), No.1 52-06 (52B55 65-06 65D18 68-06 68U05) (with M. Kano, X. Tan) MR2205941
Foldings of Regular Polygons to Convex PolyhedraⅠ: Equilateral Triangles.Combinatorial Geometry and Graph Theory, Lecture Notes in Comput. Sci.Springer-Verlag 3330, 34-43(2005) (with G. Nakamura) MR2172957 (2006e:52004)
Uniform Coverings of 2-Paths with 6-Paths in the Complete Graph. Combinatorial Geometry and Graph Theory, Lecture Notes in Comput. Sci. Springer-Verlag 3330,25-33(2005, (with M. Kobayashi and G. Nakamura) MR2172956 (2006e:05132)
Flat 2-Foldings of Convex Polygons .Combinatorial Geometry and Graph Theory, Lecture Notes in Comput. .Sci. Springer-Verlag 3330, 14-24(2005)with K.Hirata, M-J. Ruiz and J. Urrutia)MR2172955 (2006e:52003)
On Convex Developments of a Doubly-Covered Square. Combinatorial Geometry and Graph Theory,Lecture Notes in Comput. Sci. Springer-Verlag 3330, 1-13(2005) (with K. Hirata) MR217295 (2006e:52002)
Foldings of Regular Polygons to Convex Polyhedra III: Regular Hexagons and Regular n-Gons, n>7, Thai J. Math. 2(1),1-14(2004)(with G. Nakamura)
A Problem on Hinged Dissections with Colours. Graphs and Combinatorics 20 (2),145-159(2004)(with F. Hurtado, C.Merino and J. Urrutia)
Symmetric Hamilton Cycle Decompositions of the Complete Graph. Journal of Combinatorial Designs 12 (1),39-45(2004)(with M. Kobayashi and G. Nakamura)MR2024248 (2004i:05089)
Impact of Binary and Fibonacci Expansions of Numbers on Winning Strategies for Nim-like Games. International Journal of Mathematical Education in Science and Technology 34 (1),121-135(2003)(with T.Ooya)(MR1958736)
Congruent Dudeney Dissections of Polygons-All the Hinge Points on Vertices of the Polygon. Discrete and Computationa1 Geometry, Lecture Notes in Comput.Sci, Springer-Verlag 2866, 14-21(2003)(with G. Nakamura)MR2155750
Maximin Distance for n Points in a Unit Square or a Unit Circle. Discrete and Computational Geometry,Lecture Notes in Comput. Sci.,Springer-Verlag 2866,9-13(2003)(with G. Nakamura,R. Mochizuki and N. Mutoh)MR2097247 (2005g:52042)
UniversaI Measuring Devices with Rectangular Base.Discrete and Computational Geometry, Lecture Notes in Comput. Sci.,Springer-Verlag 2866, 1-8 (2003)(with H. Fukuda and G. Nakamura)MR2097246
Foldings of Regular Polygons to Convex Polyhedra II: Regular Pentagons. J. Indones.Math. .Soc.(MIHMI)9(2),89-99(2003) (with G. Nakamura)MR2023091(2005a:52013)
Determination of All Convex Polygons which are Chameleons-Congruent Dudeney Dissections of Polygons. IEICE TRANS. Fundamentals E86-A (5),978-986(2003) (with G. Nakamura)
Congruent Dudeney Dissections of Triangles and Convex Quadrilaterals-All Hinge Points Interior to the Sides of the Polygons. Discrete and Computational Geometry, The Goodman-Pollack Festschrift. (B. Aronov, S. Basu, J. Pach and M. Shrir, eds.), Algorithms and Combinatorics, Springer-Verlag 25, 43-63(2003) (with G. Nakamura) MR2038469 (2004m:52029)
The Optimality opf a Certain Purely Recursive Dissection for a Sequentially n-Divisible Square. Computational Geometry: Theory and Applications 24(1), 27-39(2003) (with G. Nakamura,
A. Nozaki, K. Ozawa and T. Sasaki) MR1949922 (2003K:90032)
Graphs G for which both G and Gare Contraction Critically k-Connected .Graphs and Combinatorics 18 (4), 693-708(2002)(with K. Ando and Y. Egawa)MR1964786(2004b:05119)
On Dudeney’s Round Table Problem for p+2. Ars Combinatorica 62, 145-154(2002)(with M. Kobayashi and G. Nakamura)MR1881954 (2002j:05096)
Congruent Dudeney dissections of polygons. .All the hinge points are vertices of the polygon. The Ninth Quadrennial International Conference on Graph Theory, Combinatorics, Algorithms and Applications, 12-19. (electronic), Electron. Notes Discrete Math., 11, Elsevier, Amsterdam, (2002) 52B45 (05B25)(with G. Nakamura)
Simple Winning Strategies for Wythoff's Game. The Bulletin of the Higher Education Research Institute, Tokai University 9, 53-60 (2001) (with T.Ooya)
Sequentially Divisible Dissections of Simple Polygons. Discrete and Computational Geometry, Lecture Notes in Comput. Sci.,Springer-Verlag 2098,53-66(2000)(with T. Sakai and J. Urrutia)MR2043637
A Note on the Purely Recursive Dissection for a Sequentially n-Divisible Square. Discrete and Computational Geometry, Lecture Notes in Comput. Sci.,Springer-Verlag 2098,41-52(2001)(with G. Nakamura,A. Nozaki and K. 0zawa)MR2043636
Universal Measuring Devices without Gradations. Discrete and Computational Geometry, Lecture Notes in Comput. Sci.,Springer-Verlag 2098, 31-40(2001)(with H. Fukuda, G. Nakamura, T. Sakai, J. Urrutia and C. Zamora-Cura)MR2043635
Dudeney Dissections of Polygons and Polyhedrons -A Survey-. Discrete and Computational Geometry,Lecture Notes in Comput. Sci.,Springer-Verlag 2098,1-30(2001) (with G. Nakamura)MR2043634
Solids Through Reflecting Mirrors. Teaching Mathematics and lts Applications 19 (2),0xford University Press, 62-68(2000)(with G. Nakamura)
Variations of the Tiling Problem. Teaching Mathematics and Its Applications, 0xford University Press 19 (1),8-12(2000)(with G. Nakamura)
Dudeney Dissections of Polygons. Discrete and Computational Geometry, Lecture Notes in Comput. Sci.,Springer-Verlag 1763, 14-29(2000)(with G. Nakamura)
Radial Perfect Partitions of Convex Sets in the Plane. Discrete and Computational Geometry, Lecture Notes in Comput. Sci.,Springer-Verlag 1763, 1-13 (2000)(with A. Kaneko, M. Kano,G. Nakamura, E. Rivera-Campo, S. Tokunaga and J. Urrutia)
A Lesson on Double Packable Solids. Teaching Mathematics and Its Applications,Oxford University Press 18 (1),30-33(1999)(with G. Nakamura)
Stochastic Voting Protocol to Protect Voters Privacy. 1999 IEEE Workshop on Internet Applications,IEEE Computer Society 103-111 (1999)(with H. Kikuchi, H. Gobioff and G. Nakamura)
Complete Arrangement of Chessboards. The Bulletin of the Higher Education Research Institute, Tokai University 6, 99一112(1998) (with M-J. Ruiz)
Perfect Divisions of a Cake. Proc. of the Tenth Canadian Conference on Computational Geometry ‘98, 1-9(1998)(with E. Rivera-Campo,G.Nakamura and J. Urrutia)
Wrapping a Cube. Teaching Mathematics and Its Applications, Oxford University Press 16 (3),95-100 (1997)(with T. 0oya and Y. Segawa)
An Efficient Dissection for a Sequentially n-Divisible Square. Proc. of Discrete and Computational Geometry Workshop ‘97, 80-89(1997)(with G. Nakamura)
On Circles Containing the Maximum Number of Points. Discrete Mathematics 151 (1-3),15-18(1996)(with Y. Ishigami, M. Urabe and J. Urrutia)
Some Combinatorial Problems. Discrete Mathematics 116 (1-3),291-298 (1993)(with K. Hosono and M. Urabe)
From the managing editor. Graphs Combin. 9(1993), No.1, 1. DML Item MR1554362
A generalization of a problem posed in Mathematics Olympiad. Proc. Fac.Sci. Tokai University. 27, 59-61(1992), (with M. Nakajima) MR1218841(94d:51019)
Packing Paths Perfectly. Discrete Mathematics 85 (3),247-255(1990) (with V. Chvátal)MR1081834 (92a:68114)
Simple Alternating Path Problem. Discrete Mathematics 84 (1),101-103(1990) (with J. Urrutia)MR1065718 (91d:05084)
A Note on Balanced Colourings for Lattice Points. Discrete Mathematics 83 (1),123-126(1990)(with J. Urrutia)MR1065692 (91f:05049)
Path Chromatic Numbers of Graphs. Journal of Graph Theory 13 (5), 569-575(1989)(with H. Era, S. Gervacio and M. Watanabe)MR1016277 (90g:05076)
Packing Smaller Graphs into a Graph. Discrete Mathematics 75 (1-3),7-9(1989)(with F Nakada and S. Tokunaga)MR1001380 (90c:05159)
Disjoint Simplices and Geometric Hypergraphs. Combinatorial Mathematics : Proc. of the Third lnternational Conference, Annals of the New York Academy of Sciences 555, 1-3(1989)(with N. Alon)
Maximum Induced Forests of Planar Graphs. Graphs and Combinatorics 3 (2),Research Problem 201-202(1987)(with M. Watanabe)MR1554352
Intersection Graphs and Their Applications. Matimyás Mathematika, Philippines Math. Soc. 9(1),8-33(1985 (with M-J. Ruiz)MR0816112 (86m:05037)
Eccentric Graphs. Discrete Mathematics 56 (1),1-6(1985)(with K. Ando and D. Avis)MR0808082 (87d:05134)
1-Factors of Triangle Graphs. Number Theory and Combinatorics,Tokyo 1984,World Scientific Publishing 21-35 (1985) (with M. Kano)
Tiling Finite Figures Consisting of Regular Polygons. Proc. of the 5th International Conference on Graph Theory and its Applications, Wiley-lnterscience 1-13 (1985) (with M. Kano and M-J. Ruiz)MR0812652 (87h:05069)
On the Size of Graphs with Complete-Factors Journal of Graph Theory 9(1),(1985)197-201(with P. Frankl)MR0785662 (86g:05069)
Almost-Regular Factorization of Graphs. Journal of Graph Theory 9 (1),(1985)123-128(with M. Kano)MR0785655 (86f:05073)
Factors and Factorizations of Graphs一A Survey. Journal of Graph Theory 9 (1),1-42(1985) (with M. Kano)MR0785648 (86e:05070)
Introduction to Graph Factors. Matimyas Mathematika, Philippines Math. Soc. 8 (1),1-26(1984)(with M-J. Ruiz)
Cube Factors. Graph Theory and its Applications,Lecture Notes in Comput.Sci.,Springer-Verlag 1073,93-99(1984) (with D. Avis)MR0761009 85k:05082)
A Graph and Its Complement with Specified Properties Ⅷ: Intervai Graphs. Mathematica Japonica 29 (4),659-670(1984) (with K. .Ando and F. Harary)MR0759456(86b:05061)
Miscellaneous Properties of Equi一Eccentric Graphs. Annals of Discrete Mathematics 20,13-23 (1984) (with K. .Ando and D. Avis)MR0791008 (86j:05115)
The Regulation Number of a Graph. Publications de I’Institut Mathematique, Beograd Math. Soc. 34(48),3-5(1983)(with F. Harary)MR0770005 (86a:05109)
A Graph and Its Complement with Specified Properties Ⅳ: Chromatic and Achromatic Numbers. Pacific Journal of Mathematics 104 (1),15-27(1983)(with F. Harary and R Ostrand)MR0683724 (84h:05101a)
Regular Graphs Containing a Given Graph. Elemente der Mathematik 38 (1),15-17(1983)(with H. Era and F. Harary)MR0696668 (84h:05072)
Characterizations and Classifications of Biconnected Graphs. Annals of Discrete Mathematics 13, 1-14(1982) (with K. .Ando and H. Mizuno)
Path Factors of a Graph. Graphs and Applications (F. Harary and J. S. .Maybee eds.),Wiley-Interscience,1-21(1982) (with M. Kano)MR0778395 (86d:05092)
Factorization and Linear Arboricity of Graphs. Doctoral Thesis. Tokyo University of Science (1982)
A Short Proof of the Linear Arboricity for Cubic Graphs. Bull. Liber, Arts &Sci., NMS(Nippon Medical school) (2),1-3(1981)(with V. Chvatal)
Balancing Signed Graphs. Discrete Applied Mathematics 3, 227-233(1981)(with D. Avis, V. .Chvatal and H. Era)
Equi-Eccentric Graphs with Equi-Eccentric Complements. TRU Mathematics 17 (1),113-115(1981) (with K. Ando)MR0630288 (83a:05081)
On the Connectivity of n-Trees. TRU Mathematics 17(1),117-121(1981)(with I. Sato)MR0630289 (83b:05052)
Covering and Packing in Graphs Ⅳ: Linear Arboricity. Networks 11 (1),69-72(1981)(with G. Exoo and F. Harary)MR0608921 (82k:05085b)
A Status on the Linear Arboricity. Graph Theory and Algorithms, Lecture Notes in Comput. Sci. .Springer-Verlag 108, 38-44(1981)
A Graph and lts Complement with Specified Properties Ⅶ: A Survey. The Theory and Applications of Graphs, Wiley-lnterscience 1-12 (1981)(with F Harary)
Further Results on Graph Equations for Line Graphs and n-th Power Graphs. Discrete Mathematics 34(3),209-218(1981) (with H. Era and G. Exoo)MR0613401 (82f:05082)
A Graph and lts Complement with Specified Properties. .IV: Counting Self-Complementary Blocks. Journal of Graph Theory 5 (1),103-107 (1981)(with F. Harary)MR0604310 (82i:05062d)
The Cohesiveness of a Point of a Graph. Networks 11,65-68(1981)(with F. Boesch, H. Era, F Harary and R. Tindell)MR0608920 (82f:05065)
Another Proof of Euler's Theorem for Digraphs. Bull. Liber. Arts &Sci., NMS(Nippon Medical School)(1),19-21(1980)
Another Proof of Five Color Theorem. Bull .Liber. Arts&Sci.,NMS(Nippon Medical School) (1)17-18 (1980) with T. Hamada)
On a [1, 2]-Factor of a Graph. TRU Mathematics 16(2),97-102(1980)(with D. Avis and H. Era)MR0616992 (82f:05080)
Covering and Packing in Graphs Ⅲ: Cyclic and Acyclic lnvariants. Mathematica Slovaca 30 (4),405-417(1980)(with G. Exoo and F. Harary)MR0595302 (82k:05085a)
A Graph and Its Complement with Specified Properties V: The Self Complement
lndex. Mathematika 27(1),64-68(1980)(with G. Exoo and F. Harary)MR0566658 (82i:05062e)
A Graph and lts Complement with Specified Properties II : Unary Operations. Nanta Mathematica 12 (2),110-116(1979) with F. Harary)MR0566658 (82i:05062b)
On a Structure of Graphs with W-Sets. TRU Mathematics 15 (2),43-46(1979) with H. Era)MR0564367 (81e:05091)
A Graph and Its Complement with Specified Properties Ⅲ: Girth and Circumference. lnternational Journal of Mathematics and Mathematical Sciences 2(4),685-692(1979) with F. Harary)MR0549535 (82i:05062c)
The Graphs with All Induced Subgraphs Isomorphic. Bull. Malaysian Math. Soc. (2) 2 (1),43-44 (1979) (with G. Exoo and F. Harary)MR0545802 (81b:05084)
A Graph and Its Complement with Specified Properties I: Connectivity. International Journal of Mathematics and Mathematical Sciences 2 (2),223-228 (1979) with F. Harary)MR0539199 (82i:05062a)
The Decompositions of Line Graphs, Middle Graphs and Total Graphs of Complete Graphs into Forests. Discrete Mathematics 26 (3),203-208(1979)(with T. Hamada)MR0535245 (80h:05020)
Forbidden Subgraphs for Planar Total Graphs,Middle Graphs and Iterated Line Graphs.Journal of Combinatorics,Information and System Sciences, Indian Math. Soc.3(4),255-260(1978)MR0529343 (80h:05022)
Graph Equations for Line Graphs and n-th Power Graphs I. Publications de l’lnstitut Mathematique,Beograd Math. Soc .23(37),5-8(1978)(with K.Kaneko and S. Simic)MR0508120 (80c:05106)
A Note on the Arboricity of the Complement of a Tree.TRU Mathematics 13 (1),55-57(1977)(with T. Hamada)MR0465911 (57#5797)
A Solution of Graph Equation for Line Graphs. TRU Mathematics 12 (2),35-43(1976)(with T. Hamada and I. Yoshimura)MR0460182 (57#177b)
Graph Equations for Line Graphs,Total Graphs and Middle Graphs. TRU Mathematics 12 (2),31-34 (1976) (with T. Hamada and I. Yoshimura)MR0460181 (57#177a)
On Characterizations of the Middle Graphs. TRU Mathematics 11, 35-39 (1975) (with T. Hamada and I. Yoshimura) MR0414436 (54#2538)
Miscellaneous Properties of Middle Graphs. TRU Mathematics 10,41-53(1974)(with T. Hamada and I. Yoshimura)MR0412028 (54#157)
S-Wellposedness of Partial Differential Equations with Constant Coeffients. Master’s Thesis. Sophia University(1972)

  Papers on Mathematics Education
Case Study of Experimental Mathematics in Tokai Math Olympiad: A Report on Project Study about Tiling by Nets of Polyhedra, Bull. Higher Educ. Res. Inst., Tokai Univ., No.18, 33-48(2010), (with T. Kuwata et. al.)* in Japanese
Case Study for Experimental Mathematics in Tokai Math Olympiad: A Report on Project Study about the Decomposition of Platonic Solids, Bull. Higher Educ. Res. Inst., Tokai Univ, No.17, 1-32 (2009), (with T. Kuwata et. al.)* in Japanese.
On the Perimeter of the Developments of Semi-regular Polyhedra, Educational Development, Tokai University Vol.4, 3-30 (2008), (with G. Nakamura).* in Japanese
Fostering Creativity with Polyhedral Cutters: A Project Study Report from the Tokai Math Olympiad, Bulletin of the Higher Education Research Institute, Tokai University, No.16, 1030(2008), (with T. Sakai et. al.). *in Japanese.
Mathematics for Mass Media. Proc. of ICME 10. (2008) , DVD
Project Study to Improve an Ability to Solve Problems. Bulletin of the Higher Education Research Institute, Tokai University, No.15, 39-54 (2007), (with T. Shiotani et. al.)*in Japanese
Popularizing Math through Mass Media. To appear in Proc. of the 10th MATH TED, Ateneo de Manila University, (2006).
A Proposal for Introducing Discrete Mathematics into High School Curriculum. Education Development №1, 75-89(2005) (with T. Sakai)*in Japanese
Mathematical Circus http://www.eurocg.org/www.us.es/ewcg04/cosmoakiyama.pdf
A Transition from Elementary to High School Mathematics.
Bulletin of the Higher Education Research Institute, Tokai University, No.2, 1-19(2004) (with T. Sakai)*in Japanese
ME (Mathematical Enlightenment) ProjectーIdea and Activities-, Bulletin of the Higher Education Research Institute, Tokai University,. №11, 21-32(2003) (with K. Kakei)*in Japanese
A New Field which can be Mine for a New Result. Proc. of Japan Society for Fuzzy Theory and Intelligent Infomatics 15 (1), 1 Preface (2003)*in Japanese
What Does it Take to Get Students Excited About Mathematics?
The Bulletin of the Higher Education Research Institute,Tokai University, 15-27(2003) (with C. Nara and T. Sakai)
Teaching Classroom Mathematics to Develop Creativity-Techniques and Evaluation Instrument.
Bulletin of the Higher Education Research Institute, Tokai University,. №10, 29-40(2002), (with C. Nara, T. Sakai, M. Sato, K. Ueda)*in Japanese
Using "Study Projects" for Deeper and More Satisfying Learning Experiences-More Programs from Tokai Academic Mathematical Olympiads. The Bulletin of the Higher Education Research Institute, Tokai University, 9-52(2001),(with T. Ooya, T. Sakai, and C. Nara)*in Japanese
Experimental Classroom Teaching of Mathematics in Practice with Emphasis on the Development of Innovative Mathematical Abilities and Related Challenging Problems. Bulletin of the Higher Education Research Institute, Tokai University, No.9, 9-27(2001) *in Japanese
Nonstandard Ways of Teaching Standard Mathematics II-Miscellaneous Properties of Circles-.The Bulletin of the Higher Education Research Institute, Tokai University, 1-14 (2000) (with T. Sakai,N.Torigoe and Y. Watanabe)
Review of the Report of Physics Education Committee. Proc. of Applied Physics Soc. 68 (3), 258-259(1999) *in Japanese
Teaching Probability Distributions with a Cradle Pinball Device. Proc.of the 8th Southeast Asian Conf. on Math. Educ.,Ateneo de Manila University Press, 69-75(1999) (with N.Torigoe)
Nonstandard Ways of Teaching Standard Mathematics.Proc.of the 8th Southeast Asian Conf. on Math. Educ., Ateneo de Manila University Press, 7-33(1999) (with T. Sakai and Y. Hirano)
Theorems and Problems in Basic Geometry Arisen from Everyday Life. The Bulletin of the Higher Education Research Institute, Tokai University , 113-134(1998) (with T. Sakai)
An Analysis of the Mathematical Art Exibition from the Viewpoint of Mathematics Education. Bulletin of the Higher Education Research Institute, Tokai University,. No.6, 85-97(1998) (with J. Ooya et al.) *in Japanese
Teaching Mathematics on Television. Proc. of the Second Asian Math. Conf.1995, 575-584(1998)
On the use of the History of Mathematics in Mathematics Education. The Bulletin of the Higher Education Research Institute, Tokai University, 67-79(1997) (with Y. Hirano)
A Generalization of a Problem Posed in Mathematics Olympiad. Proc. of Fac. of Sci., Tokai University, 59-61(1992) (with M. Nakajima)