Employee Directory

First Name

Last Name

Department

Ricardo Rojas

Associate Professor of Mathematics

605-626-2468

Ricardo Rojas

Associate Professor of Mathematics

Mewaldt-Jensen 213

605-626-2468

ricardo.rojas@northern.edu

Ph.D. Mathematics, University of Illinois, Urbana-Champaign

B.S. Physics, University of Illinois, Urbana-Champaign

Dr. Ricardo E. Rojas is currently an associate professor of mathematics at Northern State University in Aberdeen, South Dakota. He has been serving NSU and the state of South Dakota since 2008.

Courses Taught

MATH 095 Pre-College Algebra

MATH 101 Intermediate Algebra

MATH 114 College Algebra

MATH 361 Modern Geometry

Research Interests

Euclidean geometry

Incidence geometry

(Finite) affine planes

(Finite) projective planes

Samantha St. Clair

Assistant Professor of Biology

605-626-7707

Samantha St. Clair

Assistant Professor of Biology

Jewett Science Center 119

605-626-7707

samantha.stclair@northern.edu

Ph.D., Nutrition Science, University of Wisconsin-Madison

B.S., Nutrition Science, Indiana University-Bloomington

Courses Taught

Genetics
Cell and molecular biology
Nutrition and disease
Human health and biology

Research Interests

Mechanisms of type II diabetes and diet-induces obesity in zebrafish (Danio rerio)
Development of biological reasoning skills in undergraduate biology majors and non-majors

Stacy Trentham

Associate Professor of Mathematics

605-626-3296

Stacy Trentham

Associate Professor of Mathematics

Mewaldt-Jensen 216

605-626-3296

stacy.trentham@northern.edu

Ph.D. North Dakota State University

B.A. University of Minnesota Morris

Dr. Stacy Tretham is from west central Minnesota. She begin working at NSU in the fall of 2016.

Courses Taught

Math 101 Intermediate Algebra

Math 102/114 College Algebra

Math 102/114 Online College Algebra

Math 103 Quantitative Literacy

Math 120 Trigonometry

Math 123 Calculus 1

Math 125 Calculus 2

Math 216 Discrete Structures

Math 316 Discrete Mathematics

Math 351 Foundations of Mathematics

Math 381 Probability and Statistics

Math 412 Linear Algebra

Math 413 Abstract Algebra

Research Interests

Commutative Algebra

Personal Interests

Reading, experimenting with new recipes, and spending time with her family

Travis (William) Trentham

Lecturer of Mathematics

605-626-3298

Travis (William) Trentham

Travis (William) Trentham

Lecturer of Mathematics

Mewaldt-Jensen 217

605-626-3298

william.trentham@northern.edu

Ph.D. North Dakota State University

B.A. University of Tennessee, Knoxville

Dr. William Travis Trentham grew up in the foothills of Great Smoky Mountains National Park in eastern Tennessee. Dr. Trentham received his Ph.D. in mathematics from North Dakota State University. He began working at Northern in the fall of 2016.

Courses Taught

Math 101 Intermediate Algebra

Math 114 College Algebra

Math 120 Trigonometry

Math 123 Calculus 1

Math 125 Calculus 2

Math 216 Discrete Structures

Math 321 Differential Equations

Math 216 Discrete Structures

Math 351 Foundations of Mathematics

Math 412 Linear Algebra

Math 413 Abstract Algebra 1

Research Interests

Commutative algebra

Personal Interests

Playing poker, following the stock market, and traveling with family

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