Hosted by Professor Kyeong Hah Roh Abstract Much of what we say and write in our mathematics classes assumes that our students understand linguistic and logical conventions that have never been made explicit to them. What problems result from this assumption, and how can we address them? Biography Susanna S. Epp (Ph.D., University of Chicago, 1968) is Vincent de Paul Professor of Mathematical Sciences at DePaul University. After initial research in commutative algebra, she became interested in cognitive issues associated with teaching analytical thinking and proof and has published a number of articles and given many talks related to this topic. She is the author of Discrete Mathematics with Applications, now in its fourth edition, and of the newly published Discrete Mathematics: An Introduction to Mathematical Reasoning. She also co-authored the first edition of Precalculus and Discrete Mathematics, which was developed as part of the University of Chicago School Mathematics Project. Long active in the Mathematical Association of America, she is a co-author of CUPM Curriculum Guide 2004. In January 2005 she received the Louise Hay Award for contributions to mathematics education, and in April 2010 she received the Award for Distinguished Teaching of Mathematics from the Illinois Section of the Mathematical Association of America.