Spring 2002


The Face of Teaching


Creating community in the world of numbers and theories

Roger Lautzenheiser had never heard of calculus before being asked to help a classmate with a homework assignment during his freshman year at Indiana University.

Intrigued, the pre-medicine major spent the next summer taking his first course in the mathematics subject.  He was quickly attracted to the relationships between numbers and theories to solve problems.

That adoration still resounds nearly 40 years later with Lautzenheiser being a popular mathematics professor at Rose-Hulman Institute of Technology.  A member of the college's faculty since 1975, Lautzenheiser earned the Dean's Outstanding Teacher Award in 2001 and has been named the Outstanding Faculty Member by Rose-Hulman students in an annual poll conducted by The Thorn student newspaper.

"In class, it was clear that he really loved the subject he was teaching and loved teaching it," concedes former student Ozgur Ozkaya, a 1996 electrical engineering graduate.  "It was impossible not to get caught up in the excitement."

This winter, during a differential equations class, Lautzenheiser took several minutes out of his class to make sure each of his students understood the mathematical concepts needed to solve a problem.

"Sometimes, it's hard to show the 'why' in a problem.  You need to step back and take five or 10 minutes out of a classroom session to make sure the students understand the concepts that solve a problem," he states, revealing that his daily classroom notes can consist of four handwritten statements on an index card.  "Each student has spent $80 on a textbook that explains things in a much more organized way.  They're in my classroom to understand how those mathematical concepts are applicable in problems they're going to encounter as future engineers, scientists or mathematicians."

It's that ability that stands Lautzenheiser above his peers, according to John Williams, a 1977 mathematics alumnus who now is a mathematics professor at the University of Hartford.

"Roger has the uncanny ability of understanding where the student is having trouble and then illuminating the path to understanding the concept with the perfect example," Williams says.  "Mathematics can be understood as just a logical connection of theorems and ideas, but it can also come about naturally.  I remember, in the point-set topology course that Roger taught, he was able to get us to see what theorems should be right and how the proofs should proceed.  It is easy to teach theorem/proof, but it is harder to convey paradigms and structure."

In his own words, Lautzenheiser states "The mechanics of teaching aren't difficult or challenging.  To be good you have to develop a relationship with students.  You need to know when you're getting the message across.  They have to feel comfortable with you."

And, many times, those relationships extend outside the classrooms in Crapo Hall.  Roger and his wife, Gretchen, have welcomed many Rose-Hulman students into their home to celebrate Christmas, Thanksgiving or Easter.

"This ties into Dr. Lautzenheiser's teaching style: He creates a feeling of camaraderie and community between his students.  This is what makes Rose-Hulman such a special place," said Ozkaya, now an engineer with Texas Instruments (San Jose, Calif.)  "I have not met another professor with more office hours than Dr. Lautzenheiser.  He made students welcome, and took as long as was needed for them to understand the concepts.  He did all of this with a smile on his face because he really cared for you."

Lautzenheiser specializes in the area of numerical linear algebra, a course he will teach this spring.  He also instructs classes regularly in calculus, statistics and differential equations, and edits a new online journal (www.rose-hulman.edu/mathjournal) that draws attention to research papers and other educational projects by the nation's top undergraduate mathematics students.  In two years, the journal has published reviewed papers by 17 undergraduate authors and one high-school author from institutions such as the University of Michigan, Duke University, North Carolina State University and Denison University.

"Roger's contributions to undergraduate engineering go beyond teaching," admits Mathematics Department Chair Allen Broughton.  "He's an excellent scholar, faculty colleague and, of course, mathematician."

Lautzenheiser, who twice has served as Rose-Hulman's Mathematics Department chair, admits his classroom techniques have been influenced by a year (1998-99) teaching advanced calculus with a Japanese colleague at Kanazawa Institute of Technology, and two technical sabbaticals in industry.

Obviously, that calculus class is still paying off big dividends - to him and his students.

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