Mathematics Faculty

Susan Crook
2012- Assistant Professor of Mathematics

Susan Crook is currently finishing up her PhD in Numerical Analysis at North Carolina State University while also enjoying her first year of teaching at Loras College.  Her research focuses on curve matching which has real world applications in object recognition and assembly.  In addition to numerical analysis, Prof. Crook has interests in Matrix Theory and Applied Linear Algebra.  While she enjoys research, her real passion is teaching.  She is especially interested in inquiry-based learning and would love to discuss this pedagogy with anyone!  In her small amount of free time, she enjoys baking, exploring Dubuque and the surrounding areas, reading, and trying to catch up on sleep.

Jacob Heidenreich
2006- Associate Professor of Mathematics

Dr. Heidenreich’s professional research interests lie in Mathematical Logic, which is on the border of Math and Philosophy.  His undergraduate research projects have followed the interests of his student advisees, but have included using game theory to model price competition in economics, exploring Fibonacci sequences in modular arithmetic, exploring shape numbers in higher dimensions, and counting the number of distinct 4x4 Sudoku puzzles. He is currently teaching mostly Pre-Calculus and Calculus I classes, and studying the application of the psychology of game-playing to education (often called the ‘gamification of education’). His hobbies include raising two small children (which make having any other hobbies difficult) and playing games (mostly Dungeons & Dragons and Magic: the Gathering).

Robert Keller
1999- Associate Professor of Mathematics
Chair, Division of Mathematics, Engineering and Computer Science

Dr. Keller, while passionate about mathematics in general (and 99.9% of the time life itself), is most enthusiastic about STEM education, especially mathematics education. Over the past decade-plus at Loras College, he’s enjoyed many opportunities to educate and mentor future K-12 teachers. He’s also had the privilege to work with hundreds of practicing teachers in numerous districts throughout eastern Iowa during the years he served as an organizer and workshop presenter in the Loras College Lesson Study Project, and now as co-director of a state-funded project that supports integration of math and science at the middle school level. Before children he had hobbies, which included composing choral music with piano accompaniment, practicing Tae Kwon Do, and restoring antique furniture.  

Angela Kohlhaas
2010- Assistant Professor of Mathematics

Dr. Kohlhaas received her PhD in mathematics in 2010 from the University of Notre Dame, where she studied commutative algebra. She enjoys finding ways of visualizing algebra through geometry and combinatorics.  These interests have led to student research projects in the mathematics of origami, the relationship between projective geometry and perspective art, and symmetries of Sudokus. Outside of mathematics, Professor Kohlhaas can often be found playing Ultimate Frisbee, at the piano, or cooking spicy food.

Jonas Meyer
2011- Assistant Professor of Mathematics

Dr. Meyer’s teaching includes courses in college algebra, precalculus, calculus, guided research, and real analysis.  His research background is mainly in mathematical analysis, more specifically in functional analysis and operator algebras, and he is interested in the interplay between algebra and analysis.  Jonas enjoys rock and roll music.

Matthew Rissler
2008- Assistant Professor of Mathematics

Dr. Rissler’s mathematical interests lie with modeling systems via agent-based methods; this touches on differential equations and stochastic systems.  Of the many applications, he prefers the biological or political ones.  He likes to teach useful math, so he teaches Statistics and Calculus often.  Dr. Rissler also teaches a fun Math of Politics course in J-term.  In his free time, he enjoys Ultimate Frisbee and used to be really good, competing at Club Nationals in 2003 and 2004. 

Daniel Willis
1992- Associate Professor of Mathematics

Dr. Willis is primarily interested in computational physics and mathematics education. He frequently teaches Math for Elementary Teachers, Finite Math, Calculus, Differential Equations, Numerical Analysis, Linear Algebra, Discrete Math, and Math Portfolio. He is currently writing a textbook on the subject of ordinary differential equations. His other interests include bridge, chess, guitar, reading, writing, and his two cats.

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