TABLE OF CONTENTS
Descriptive Summary
Scope and Contents
Restrictions
Index Terms
Administrative Information
Description of Series
I. Mathematical Olympiads
II. Teaching and Administration
III. Publications and Creative Works
IV. Professional Activities
V. Personal
VI. Photographs
VII. Digital Media

A Guide to the George Lenchner Papers,
19432006





Creator: 
Lenchner (George) 

Title: 
Lenchner (George)
Papers 

Dates: 
19432006 

Abstract: 
George Lenchner
founded the Math Olympiads for Elementary and Middle Schools (MOEMS) in 1978.
Correspondence, lectures, notes, and publications document George Lenchner's
career as a teacher and administrator in the Valley Stream Central School
District (19531983). 

Accession No.: 
2008259 

Extent: 
6 ft. 

Language: 
Materials are written in
English. 

Repository: 
Dolph Briscoe Center for American
History,The University of Texas at
Austin 
George Lenchner (19172006) was born in
Hartford, Connecticut, and grew up in Brooklyn, New York. He was interested in
mathematics early in his life, and was a member of the math team at Boys High
School (Brooklyn, NY) in the early 1930s. In 1939, Lenchner received his
bachelor's degree from the City College of New York.
During WWII he served in the Army as an Airborne Ranger (with the rank
of lieutenant), and in 1944, he was wounded on Omaha Beach during the Dday
landing operations. He was awarded a Purple Heart and a Bronze Star. Following
his service in the Army, he received his master's degree in music from New York
University in 1948.
Lenchner began teaching high school mathematics in
1950 when he joined the faculty at New Utrecht High School in Brooklyn. In
1953, he took a job at Valley Stream North High School (Long Island, NY) as its
math chairman. In 1954, he proposed the creation of the Nassau County (NY)
Interscholastic Mathematics League (NCIML) for high school students. By 1955,
the NCIML was fully operational, with Lenchner serving as its leader. Also
around this time, he formed the Nassau County Association of Math Supervisors,
and he proposed the formation of the Nassau County Junior High School
Mathematics League, which held its first meet in 1960. In addition, Lenchner
helped Alfred Kalfus form the Suffolk County Interscholastic Mathematics
League.
In 1965, he earned a master's degree in mathematics from Adelphi
University. He became Director of Mathematics for the Valley Stream Central
School District in 1970. In 1972, Lenchner received his Ed.D. in Mathematics
Education from Teachers College, Columbia University. He created the
Mathematical Olympiads for Elementary and Middle Schools (MOEMS) for the Valley
Stream elementary schools in 1978. Lenchner retired from the Valley Stream
school system in 1983 in order to focus fully on MOEMS. He retired from MOEMS
in 1995.
Lenchner authored numerous publications, including (with Judy
Broadwin) a solutions manual for the Advanced Placement examinations in
calculus, and two volumes of Math Olympiad problems. His inservice course, The
Art of Problem Solving in School Mathematics , was published by Houghton Mifflin
in 1983, with the title Creative Problem Solving in School Mathematics.
Examples of his honors and awards include being named a National Science
Foundation Fellow, the Mathematics Teacher of the Year Award from the New York
State Society of Professional Engineers, and the Distinguished Secondary School
Teaching Award from Harvard University.
Return to the Table of Contents
Correspondence, lectures, notes, and publications document George
Lenchner’s career as a teacher and administrator in the Valley Stream Central
School District (19531983). The publication process for several of Lenchner’s
published works is particularly well documented in drafts and correspondence
with his son, David. Correspondence, notes, drafts, and printed materials
illuminate Lenchner’s work as founder and later executive officer of Math
Olympiads for Elementary and Middle Schools.
Forms part of the Archives of American Mathematics.
Return to the Table of Contents
Access Restrictions
The collection is open for research.
Use Restrictions
These papers are stored remotely. Advance
notice required for retrieval. Contact repository for retrieval.
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Subjects (Persons) 


Lenchner, George 

Subjects (Organizations) 


Association of Mathematics Teachers of
New York State 


Math Olympiads for
Elementary and Middle Schools 


National Council of
Teachers of Mathematics 

Subjects 


Advanced placement programs
(Education) 


Calculus 


Education 


Mathematics 


Mathematics—Competitions—United States 


Mathematics—Problems,
exercises, etc. 


Mathematics—Study and
teaching 


Overhead
projection 
Return to the Table of Contents
George Lenchner Papers, 19432006,
Dolph Briscoe Center for American History, University of Texas at
Austin.
Return to the Table of Contents















I. Mathematical Olympiads 
Box 
2008259/1 (10612976) 


Nassau County Interscholastic Mathematics League (NCIML)





NCIML contests,
19571972, undated 




Mathlete clippings and articles,
1962, undated 




Problems and Solutions Guide,
July 6, 1969 




Publicity,
19722005 




Problems and Solutions Guide order form,
1977, 1989 




Correspondence,
19971998 




New York City Interscholastic Mathematics League
Contests,
19771980 




Mathlete practice contests,
undated 




North High Mathletes practice handouts,
undated 




Theorems of geometry for Mathletes,
undated 




“My Favorite Mathlete Problems,”
undated 
Box 
2008259/1 (10612976) 


Long Island Mathematical Olympiads for Elementary
Students (LIMOES) 




Olympiad overheads,
[1978]1980 




Drafts, lecture notes, forms,
1981, undated 




Lecture handouts and overheads,
[198?] 




Correspondence,
October, 5, 1981 




LIMOES Pilot Year problems and solutions,
1998 
Box 
2008259/1 (10612976) 


Mathematical Olympiads for Elementary and Middle Schools
(MOEMS) 




Contests and solutions,
19811982, 19931996,
20042005 




Correspondence,
19812000 




Newsletters,
1981, 19942006 




Presentations,
19821994, undated 




Notes,
1982, undated 




Clippings,
1982, 19941998, undated 




Promotional materials,
1983 




Other mathematics contests,
19851989, undated 




Math Olympiad appeals,
1989 




“My Twelve Favorite Math Olympiad Problems” originals,
1992? 




Kalman application for MOES Executive Director,
1993 




Person in Charge of Olympiads presentation,
1998 




Twentieth Anniversary Luncheon,
1999 




George Lenchner Award biography,
[200?] 




Presentation notes,
undated 
Box 
2008259/1 (10612976) 


Publications 




“Olympiads for Elementary Schools,”
The Arithmetic Teacher,
January 1985 




Mathematical Olympiads for
Children,
1988 




Mathematical Olympiad Contest
Problems for Children,
1990 




Drafts (Folders 14 of 7),
19891996, undated 





Mathematical Olympiad Problems
for Elementary and Middle Schools,
1996 
Box 
2008259/2 (10612954) 



Drafts (Folders 57 of 7),
19891996, undated 





Mathematical Olympiad Problems
for Elementary and Middle Schools,
1996 





Drafts on diskettes,
[19941996] 




Annotations,
undated 




Flyers for publications,
undated 




Reviews,
1992, 19961997 




Reproduction permission requests,
19962003, undated 




Correspondence with Random House,
1996 




Glenwood Publications notes,
2003 



Printed Materials 




Rothenberg, Richard. Problem
Solving for Math Competitions,
1996 
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II. Teaching and Administration 
Box 
2008259/2 (10612976) 


Phi Mu Epsilon Interscholastic Mathematics Contest,
1960 



Colgate Institute for A.P. Teachers correspondence,
1966 



Elementary school math instruction observation log,
1967 



Valley Stream School District newsletters,
19701972 



Basic Computation Test report,
1971 



Enrichment vs. Acceleration Howto Clinic,
19731974? 



Report on Cooperative Area Programs, Nassau County,
1976 



Mathematics Education for Gifted Secondary Students,
1981 



Art of Problem Solving lecture notes and visuals,
1982, [198?] 



Valley Stream Schools Math Curriculum Supplements,
1982 



“Student Achievement” report,
1983 



Retirement announcements,
19831984 



New York State mathematics curriculum for K6,
1985 



Problem Solving Inservice notes, handouts, exams,
19861987 



Problem Solving Inservice term papers and evaluation,
1986 



Problem Solving Inservice student grades,
RESTRICTED,
19861987 



Problem Solving Inservice instructor evaluations,
1986?1987 



“Ubiquitous Unit Fraction” notes, overheads,
1989, 1992, undated 



NSF Project grant proposal for Inservice Institute,
[198?] 



“Greatest Common Factor” and “Least Common Multiple”
overheads and masters,
[199?] 



“Art of Problem Solving” notes and overheads,
undated 



“Directed Numbers” overheads and handouts,
undated 



“Divisibility” overheads,
undated 



Drafts of mathematical overhead visuals,
undated 
Box 
2008259/3 (10612943) 


Euler and other famous mathematicians notes and
overheads,
undated 



“FiveYear Olds” overhead,
undated 



Geometry overheads, masters, and notes,
undated 



Grids overhead visuals,
undated 



Lesson on one, lessons on primes and composites,
undated 



Math Skills workshop notes and handouts,
undated 



Polygons handout,
undated 



Problem handouts,
undated 



Problem solving overheads,
undated 



“Solving ‘Algebra’ Problems in Elementary Schools”
handouts,
undated 



Transformations and reflections overheads,
undated 



Kindergarten lesson on “Tal” with overheads,
undated 



“Ugboo's Big Problem” overheads,
undated 



Visuals of “Creative Problem Solving” problems,
undated 
Box 
2008259/3 (10612943) 


Printed Materials 




TrigEasy manuals,
1943, 1945 




Mathematical theme visuals from Scripta Mathematica,
19481955, undated 




Famous mathematicians,
19641965, 19881989, undated 




Math and secondary schools 





“The Calculus of Finite Differences: Enrichment for
Student and Teacher,” Professional Growth for Teachers,
Mathematics, April 1965 





Elements of Mathematics, Book
O: Intuitive Background,
1973 




Overhead projectors and education 





Krulik, Stephen and Irwin Kaufman.
How to Use the Overhead Projector in Mathematics
Education,
1966 





“Summary of a Research Study Conducted by the New
York City Board of Education on the Effectiveness of Overhead Projection in Two
High School Classes,”
1966? 




Clippings,
19811984, undated 




Problem solving for elementary students 





Cohen, Sandra. Problem Solving
for Primary Grades K3,
1984 





Semadeni, Zbigniew. “Verbal Problems in Arithmetic
Teaching,”
1986 





Puchalska, Ewa and Zbigniew Semadeni. “Children's
Reactions to Verbal Arithmetical Problems with Missing, Surplus or
Contradictory Data,”
1987 




Jane and Johnny Love
Math,
1992 



Audio Material 




Interview with Dr. Bruce Vogeli re: Algebra textbooks
(audio cassette tape),
1971 
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III. Publications and Creative Works 
Box 
2008259/3 (10612943) 


Calculus projectuals advertisements,
1964? 



Calculus A Teacher's Guide for 42
Projectuals,
1965 



Calculus overheads,
1965 



First generation masters for Calculus overheads,
1965 



“Algebra 1” and “Algebra 2” correspondence,
1969 



Errata for A Visual Approach to
Modern Algebra I,
1969 



Dissertation overhead projection study kit,
1969? 



M2X=Mathematics Materials Exposition manuscript,
1970? 
Box 
2008259/4 (10612965) 


Dissertation “A Study of the Effect of the Use of
Overhead Projection on Achievement in Presenting Selected Topics of Circular
Functions,”
1972 



Dissertation abstract,
1972? 



Correspondence,
1973, 1975 



Articles 




“Problem Number 10,” Mathematics
Teacher,
November 1974 




“Notes on Inequalities in Secondary School
Mathematics,”
undated 



The Overhead Projector in the
Mathematics Classroom,
1974 



Calculus projectuals correspondence,
1977 



“Number Models in Primary Grades Unifix Cubes,”
1977 



Creative Problem Solving in
Elementary and Middle School Mathematics,
1981 




Problem sets,
1981? 




Manuscript for Ch. 10,
1981? 




Overheads,
[198?] 



Creative Problem Solving in School
Mathematics, 1st Ed.,
1983 



Creative Problem Solving
order forms and reviews,
undated 



Creative Problem Solving in School Mathematics, 2nd
Ed. 




Drafts (Folders 12 of 8),
19992004, undated 
Box 
2008259/5 (10612932) 



Drafts (Folders 38 of 8),
19992004 



Printed Materials 




Figure It Out: Thinking Like a
Math Problem Solver, Books 56, with Lenchner’s notes and critiques,
[199?] 
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IV. Professional Activities 
Box 
2008259/5 (10612932) 


Curriculum Vitae,
19581981 



Conference correspondence and programs,
19581993 



Presentation materials NCTM, AMTNYS,
19621966, undated 



Advanced Placement conference, notes, lecture,
correspondence,
1964, undated 



Sitomer book reviews,
1970, 19761977 



Journal referee materials,
19741975, undated 



Papers, newsletters and memos from professional
organizations,
19761988 



Nassau County Student Symposium in Mathematics,
1985, undated 
Box 
2008259/6 (10612921) 


International Congress on Mathematical Education,
19801988 



Problem solving lecture notes,
19831986 



“HowTo Clinic” program,
1984 



Sixth ICME abstract of poster presentations,
1988 



“Math Matters” PTA kit,
1989 



Syllabus for Framingham State College course,
1990 



Long Island Mathematics Conference (LIMACON) notes,
1992 



“New Technology in Math” project,
1996, undated 



“My Twelve Favorite Problems” overheads and lecture
notes,
[199?] 



Loose notes,
undated 



AMTNYS “World's Greatest Math Teacher” bumper stickers,
undated 
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V. Personal 
Box 
2008259/6 (10612921) 


Student work, graduate course materials,
1958 



Experienced Teacher Fellowship correspondence,
1967 



PTA scholarship,
19681970 



Correspondence with former students,
19681984, undated 



Photo key overhead of 29th Dn. officers,
undated 
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VI. Photographs 
Box 
2008259/6 (10612921) 


Math class at Valley Stream North High School,
undated 
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VII. Digital Media 
Box 
2008259/6 (10612921) 


Unidentified 5 ¼ “ diskettes,
undated 



Unidentified 3.5” diskettes,
19942002, undated 



“My Docs/Windows” Backup,
January 23, 2002 



“My Documents” CDR,
February 2, 2002 
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