I am involved in
several projects and areas of professional service that might be of interest
to others. Please follow the given link or contact me if you have any
questions or comments.
Technology in Teaching
and Learning
Flash
 The Flashandmath.com project (founded by me and Barbara Kaskosz of U.R.I.) has been honored with the 2009 ICTCM Award for Excellence and Innovation with the Use of Technology in Collegiate Mathematics.
 B. Kaskosz and I have written a book on Flash Applets for mathematics educators. See http://www.flashandmath.com/appletsbook for more information.
 CoFounder(with B. Kaskosz) of the website http://www.flashandmath.com for dissemination of grant materials and establishment of a community of Flash developers of math and science applications.
 CoPI (with B. Kaskosz) on NSF grant to produce tutorials and training on Flash for math and science educational devel0plers. Ran PREP workshops based on this work in Summer 07 and Summer 08.
 PI on NSF grant to produce interactive material for teaching proof in a Discrete Math context. The material can be found at http://webspace.ship.edu/deensley/DiscreteMath/. Ran a PREP workshop based on this work in Summer 06.
 Textbook for Discrete Mathematics course (http://www.wiley.com/college/ensley) uses the Flash material throughout.
 Current "experiments" are shown at http://webspace.ship.edu/deensley/flash/index.html
Maple material
 "Maple in the Secondary Classroom," workshop in Washington, DC for Fellows of the Knowles Science Teaching Foundation.
 "Maple in Discrete Mathematics," minicourse for the Joint Mathematics Meetings.
 "Maple Programming
for Creative Classroom Capsules," article for SSHE Technology
Conference
 Presentations and Minicourses on Maple programming
basics and using Maple for handson activities in Discrete Math
Mathematical Association
of America
National
 MAA Second Vice President, 20102012
 Member of Board of Governors, 20042007
 Visiting Mathematician, 2000
MathDL
 Editor of the
Digital Classroom Resources
 Member of the
MathDL Advisory Board
 Associate Editor responsible for Loci Resources
Project NExT
 NExT Fellow 199495
(Red Dot)
 Presenter for
sectional breakout sessions, as well as national sessions on Life after Tenure,
Documenting Good Teaching, Motivating Students, and Discrete Mathematics.
 Coordinator for
EPADEL Section Project NExT
Eastern Pennsylvania
and Delaware Section
 President 19992001
 Vice President
19971999
 Coordinator of
Visiting Lecturer and Consultant Program 1994  1997
MAA Committees
 Coordinating
Council on Meetings (CCM)
 Committee on Early Career Mathematicians
 Search Committee for Mathematics Magazine editor
 Search Committee for Monthly editor
 Council on Publications
 Past chair of the James R. Leitzel
Lecture Committee
 Past member of the Committee on
Technology in Mathematics Education (CTIME)
Referee and Correspondent
 Referee for Mathematics
Magazine
 Referee for College
Math Journal's Classroom Capsules
 Correspondent
for College Math Journal's Media Highlights
Web Special Interest
Group
Chair of the MAA Special
Interest Group on the Use of the Web in Mathematics (Web SIGMAA).
Mathematics and Teaching
Flash and Math Applets
(with B. Kaskosz) Flash and Math Applets: Learn by Example, BookSurge Publishing,
2009.
Discrete Math textbook
Papers by D. Ensley
 "A Handson Approach to Proof and Abstraction," to appear in InRoads SIGCSE Bulletin, December 2009 issue (Volume
41, Number 4).
 (with J. Hamblin) "Exploring Recursion with the Josephus Problem
(Or how to play ‘‘One Potato, Two Potato’’ for keeps)" in Resources for Teaching Discrete Mathematics: Classroom Projects, History Modules, and Articles (ed. Brian Hopkins), Mathematical Association of America, 2009.
 "Unshuffling for the imperfect mathemagician," Math Horizons,
January 2004.
 "Fibonacci's triangle and other abominations," Math Horizons,
September 2003.
Reprinted in The Edge of the Universe: Celebrating Ten Years of Math Horizons, published by the Mathematical Association of America, 2006.
 "Maple in Motion," Proceedings of the Fourteenth
International Conference on Technology in College Mathematics,
2002.
 "Math for
the Fun of It," in Proteus: A Journal of Ideas, Spring
2001.
 "Invariants
under group actions to amaze your friends," in Mathematics
Magazine, December 1999.
 (with R. Grossberg) "Ramsey's theorem in stable structures,"at http://www.math.cmu.edu/~rami/finite.ps (1997) and http://citeseerx.ist.psu.edu
 (with R. Grossberg) "Finite models, stability, and Ramsey's theorem" (1996) at http://eprintweb.org
 "Automorphisminvariant measures on ℵ_{0}categorical structures without the independence property." J. Symbolic Logic, 61, 640652, (1996)
Presentations
 Mathematics and Sports. Prepared for Mathematics Awareness Month 2010, and given at Dickinson College, Hood College, Shippensburg University, and the 2010 meeting of the Allegheny Mountain Section of the MAA.
Programs for gifted
children
 Pennsylvania
Governor's School for the Sciences
 Pennsylvania
Association for Gifted Education (PAGE)
 Infinity Gifted
Program
Undergraduate Research
Problems
 Properties of
card shuffling in magic tricks
 Fibonacci bracelets
 Cryptology
 Mathematics and Music
 The Math 24 game
 The Josephus
Problem
 Pascal's triangle mod n
