**DEREGE HAILESELASSIE MUSSA**, Ph.D.

Office: Bin 320

## Education

- PhD degree in Mathematics Education,Columbia University, NY
- M. Phil degree in Mathematics EducationColumbia University, NY
- MA degree in Mathematics EducationColumbia University, NY
- B.SC degree in MathematicsAddis Ababa University, Ethiopia

## Professional Experience

- Ad-Interim Assistant professor Department of Mathematics, Texas A&M University-Commerce, Texas, TX 75429
*(August 26, 2013 – current)* *Courses: Fall 2013: College Algebra, Business Calculus Spring 2014: 553-Geometric Structure for Teachers (Graduate class), 460-Math for secondary school Teachers, 321-College Geometry and Calculus 1*- Temporary Graduate faculty member, Department of Mathematics, Texas A&M University-Commerce, Texas.
*(September 24, 2013 – current)* - Reviewer: Journal of Mathematics and system Science, USA (January 23, 2014 – current)
- Adjunct Lecturer: Department of Mathematics and Statistics, HunterCollege, City University of New York, NY
*Courses: Finite Mathematics, Introduction to statistics, College Algebra, Pre-calculus, Calculus*

## Research Interest

- Tetrahedra, Cubes (More generally three dimensional Polyhedra)
- Graph theory.
- Mathematics Education (Mainly focuses on the advanced content knowledge that impacts on class room teaching).
- Computational Geometry.

## Publications

**Tetrahedra and Their Nets**: Mathematical and Pedagogical implications.*Columbia University, May 22, 2013 (Doctoral Dissertation*) Advisor: Professor Bruce Vogeli, Professor Joseph Malkevitch**Tetrahedron and Nets**.*American Mathematical society, 1096-51-703 October 2, 2013***Reconstruction of Tetrahedron from Edge length**.*Mathematical Association of America, 1096-VN-1139, October 18, 2013***The Transitions from Two Dimensions to three Dimensions – Some Geometry of the Tetrahderon**(with J.Malkevitch).*Consortium 105 (2013): 3- 9***,**October 26, 2013.**Refined Tetrahedra***. American Mathematical society, 1100-51-9, February 5,2014***Twenty-Five Partition Types of Tetrahedra**(Derege Mussa Partition Theorem), American Mathematical Society, 1098-51-20, Feburary12, 2014.

Seminar/Colloquia

**Reconstruction of Tetrahedron from Edge length**, February 18, 2014. Department of Mathematics, University of Texas Dallas, Dallas.

## Awards

- CUNY Graduate Center, City University of NY Tuition Award
- D.K. Harrison Award CUNY Graduate Center, City University of NY
- Belgian Technical Corporation (BTC) Scholarship award
- Grant in Aid Award, Columbia University

## Professional Memberships

- American Mathematical Society
- Mathematical Association of America
- National Council of Teachers of Mathematics
- Society for Industrial and Applied Mathematics
- Mathematics and system Science, USA

## Conference Presentations

*Reconstruction of Tetrahedron from Edge length,*2014 National Joint Mathematics meeting, Baltimore, MD, January 16, 2014.*Tetrahedron and nets,*2014 National Joint Mathematics meeting, Baltimore, MD, January 17, 2014.**Refined Tetrahedra**, Paper will be presented at the 2014 AMS Spring Central Section Meeting**,**Texas Tech University, Lubbock, TX, April 11- 13, 2014**Twenty-Five Partition Types of Tetrahedra (Derege Mussa Partition Theorem)**, 2014 AMS Spring Eastern Section Meeting, University of Maryland, Baltimore, MD, March 30, 2014.