1. These maps show some of the locations where I made various presentations Elliot Tanis Professor Emeritus of Mathematics Hope College August, 2009

2. GVSU 1995 Calvin C 1999 CMU 2001 WMU 1968 Alma C 1980 WMU 1981 MSU 1983 Calvin C 1981, 1991 CMU 1989 ASA 1984 Aquinas C 1984 AIMS 1983 AIMS 1985 MAA 1983 MAA 1980, 2001 MAA 1991 MCTM 1974 MMPC 1993 Hope College Holland Clubs

3. ASA 2002 MAA 1995 MAA 2001 CCUC3 1972 ASA 1995 ISU 1963 GLCA 1972 CCUC4 1973 AMS 1977 CCUC8 1977 ASA 1977 MACUL 1978 NECC 1979 MACUL 1980 ICCH 1983 ASA 1983 ASA 1984 NECC 1984 MAA 1985 ICOTS-2 1986 ASA 1987 MAA 1991 MAA 1993 MAA 1997 JSM 1997 JMM 1998 JSM 1998 JMM 1999 MAA 1983 CUI 1981 DU 1998 U Neb 1963 EPADEL 2000 MAA 1996 GLCA/ACM 1999 SUI 1984 CMCP1983

4. University of Lancaster, 1974 First British Conference on Computers in Higher Education, Lancaster, England, 1974 University of Groningen, 1974

5. Third World Conference on Computers in Education - 1981

6. Discussed Repeating Patterns and Pointed Out Chinese Lattice Designs while on a Tour Bus when we were stalled by all of the traffic - 1985

7. M. C. Escher talk at Kodaikanal International School, 1985 Fifth International Conference on Teaching Statistics, ICOTS-5, 1998

8. “Mathematical Concepts in the Works of M. C. Escher” at Meiji Gakuin University, 1987 “Can a Microcomputer Outperform M. C. Escher” at Meiji Gakuin University, 1992, 1993, 1994

9. Fourth International Conference on Teaching Statistics (ICOTS-4) in Marrakech - 1994

10. Helped teach basic math in compound schools - 2004 Taught repeating patterns and M. C. Escher’s tessellations in Churo - 2006