Quality Assurance of MIT Open Course Ware class sites, The Otter Group, Cambridge, MA, November 2002-present.

Quality Assurance of K-8 online mathematics materials, Classwell Learning Group, Boston, MA, July 2002-present.

Temporary Employment, Harvard University, Cambridge, MA, January 2002-May 2002.

Systems Administrator and Educational Technology instructor, University of Illinois, Chicago, IL July 1997-October 2001.

Post-Doctoral Fellow, The Geometry Center, Minneapolis, MN, September 1995-June 1997.

Teaching Assistant, IAS/Park City Math Institute (formerly Park City RGI), Park City, UT, Summer 1993, 1994, 1995.

Graduate Assistant, University of Washington, Seattle, WA, September 1993 -- June 1995.

Instructor, University of Washington, Seattle, WA, Fall 1994. ``Geometry for Teachers'' computer lab.

Teaching Assistant, University of Washington, Seattle, WA, 1990--1994.

MIT Media Lab, Cambridge, MA, 1989--1990.

Math/Science Projects for High School Students, Summer 2001, Directed computer lab activities.

Methods of Structured Programming, Spring 2001, Designed and taught Logo course for secondary teachers.

Methods of Structured Programming, Spring 1999, Taught Java course for with secondary teachers.

Microcomputers in Elementary School Mathematics, Fall 1998.

Calculus III, Summer 1998--Spring 2000, Wrote and edited lab activity pages, oversaw lab TA's.

Projective Geometry, Spring 2000, Spring 1998, Directed computer lab activities.

University of Minnesota Calculus Initiative *, 1995--1996, Teaching assistant and helped with test and project design.

Technology in the Geometry Classroom *, Summer 1996, Spring 1997, Co-taught, wrote and edited course materials.

H. Burgiel. Review of The interactive Geometry Software Cinderella. The American Mathematical Monthly, volume 107, 2000.

H. Burgiel and D. Stanton. Realizations of Regular Abstract Polyhedra of Types {3,6} and {6,3}. Special issue of Discrete and Computational Geometry, 2000.

H. Burgiel and V. Reiner. Two Signed Associahedra. New York Journal of Mathematics, volume 4, 1998.

H. Burgiel. How to Lose at Tetris. Mathematical Gazette, July 1997.

H. Burgiel and E. Sander. Technology in the Geometry Classroom *. The Geometry Center, August 1996.

H. Burgiel, D. Franzblau, and K. R. Gutschera. The Mystery of the Linked Triangles. Mathematics Magazine, April 1996.

H. Burgiel. Toroidal Skew Polyhedra. Symmetry: Culture and Science, Volume 6, Number 1, 1995.

Formal Power Series and Algebraic Combinatorics, June 1998. ``Realizations of Regular Abstract Polyhedra of Types {3,6} and {6,3}''.

MER Session, San Diego Joint Mathematics Meetings, January 1997. ``Using Technology to Teach Geometry''.

AMS Session on Geometry, San Diego Joint Mathematics Meetings, January 1997. ``Combinatorial Algebraic Methods for Symmetric Embedding of Triangulated Tori''.

Exploring Undergraduate Algebra and Geometry with Technology, June 1996, ``Web Publishing for Teachers''.

Meeting of the Intermountain Section of the MAA, April 1995. Panel Discussion: ``The IAS/Park City Mathematics Institute''.

AMS/MAA Mathfest, MN, August 1994. ``How to Lose at Tetris''.

Five Colleges Regional Geometry Institute, July 1993. ``How to Lose at Tetris''.