" Divided Cells: The continued fractions for inhomogeneous problems ". November 20, 2007, University of Linz, Austria.
" Balancing Gray codes". August 3, 2007, Corvallis OR. 2007 REU Program at OSU.
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Balancing cyclic R-ary Gray codes". July 2007, Melbourne, Australia. 8-th International Conference on Finite Fields and Applications.
" Guided discovery in a discrete-mathematics
course for math majors". April 14, 2007, Linfield College.
PNW Section meeting of the Mathematical Association of America.
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Inhomogeneous Diophantine approximation of some Hurwitzian numbers".
March 7, 2007, Keio University, Japan. Diophantine Analysis and Related Fields 2007.
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Inhomogeneous Diophantine approximation of irrationals with quasi-periodic continued fractions ".
January 14, 2006, San Antonio, TX. American Mathematical Society, Special Session on Continued Fractions.
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Adapting Guided Discovery Notes for Larger Classes ".
January 2006, San Antonio, TX. MAA Poster Session for NSF awards.