My
Collection
of Links (Last Update: 7 December 2012) 
Mathematics
Ask Dr. Math
 mathematics advice from experts and professional
volunteers thinking about your questionsBiographies of Mathematicians  from the Encyclopaedia Britannica CalculusHelp.com  tutorials, links, problems, and more (courtesy of W. Michael Kelley) Centre for Experimental and Constructive Mathematics  to explore and promote the interplay of conventional mathematics with modern computation in
the mathematical sciences
CoolMath.com  an
amusement park of math designed for fun!Cut The Knot: Mathematics Miscellany and Puzzles  for teachers, parents and students who seek engaging mathematics. Many of the topics are
accompanied by Java illustrations. There are more than
900 Java applets.
Duke
Connected Curriculum Project  online materials
for lab activities for undergraduate mathematics courses
from precalculusDevlin's Angle
on MAA Online  a monthly column of
interesting mathematics related articles by Keith
Devlin
through linear
algebra, differential equations, and engineering
mathematics. Lang Moore
and David
Smith edit the site.
English
Names
of Numbers  names of the first 10,000
nonnegative powers of 10, etc.EMR:
Exercises
in Math Readiness
for University Study  a collection of
exercises on high school mathematics topics
that are
essential for university
study in mathematics, engineering, and other
sciences
(courtesy of the University of Saskatchewan Department of Mathematics & Statistics) EqWorld (The World of Mathematical Equations)  exact solutions (algebraic equations, ODE's, PDE's, integral equations, functional equations), methods
(ODE's, PDE's, integral equations, functional
equations), integrals, special functions,
Eric Weisstein’s
Math World  extensive math encyclopedia is the
work of Eric
Weisstein at Wolfram
Researchintegral transforms, forums, software, education, humor, puzzles & games, and more! (courtesy of the Institute for Problems in Mechanics, Russian Academy of Sciences) Famous Curves Index  find your favorite curve! FAQ's in Mathematics  some frequently asked questions in mathematics Fibonacci Numbers and the Golden Section  courtesy of Dr. Ron Knott of the Mathematics Department of the University of Surrey (UK) Free Mathematics Tutorials, Problems, and Worksheets  Free mathematics tutorials to help you explore and gain deep understanding of math topics. The site includes
several Java applets to investigate Graphs
of Functions, Equations, and Algebra.
Functions Site,
The  the world's largest collection of formulas
and graphics about mathematical functions, over 87,000
formulas andmore than 11,000
visualizations (courtesy of Wolfram Research)
Fun
Math
Sites  for games, puzzles, problems, brain
teasers, and more! (courtesy of Mrs.
Heal)Graphing Calculator  online graphing from etutor.com History of Mathematics  lectures on the history of mathematics by G. D. Allen of Texas A&M University Department of Mathematics HMC Tutorials  tutorials for precalculus, singe and multivariable calculus, differential equations and linear algebra (in html and pdf)
courtesy of Harvey Mudd
College Department
of Mathematics (of The Claremont
Colleges)
How
Many?  a dictionary of units of measurement, as
well as other interesting number related info!Hundred Greatest Theorems, The  courtesy of Nathan W. Kahl of Stevens Institute of Technology IMO Compendium, The  dedicated to mathematical olympiads, particularly The International Mathematical Olympiad (IMO) Interactive Real Analysis  interactive textbook for Real Analysis or Advanced Calculus in onevariable...deals with sequences, series, continuity,
differentiability, integrability (Riemann and
Lebesgue), topology, power series, and more!
Interesting
Mathematics
by Rex H. Wu  Proof without Words, Articles,
Books, Solutions (Pi Mu Epsilon Journal,The College
Mathematics Journal, Mathematics Magazine, Math
Horizons)
International
Mathematical Olympiad  official site:
timeline, countries, results, search, problems,
hall of fame, general info
Klein Bottles
For Sale (inquire within!)  Need a
zerovolume bottle? Searching for a onesided
surface?
Want the
ultimate in nonorientability? Get an
ACME KLEIN BOTTLE!!!
public by providing
free online math articles, tutorials, book listings,
and math related products.
MAA Web
Pages for Undergraduates  collection of links of
particular use to undergraduate math majors (courtesy of
the MAA)MacTutor History of Mathematics  biographies, histories, glossary, quotations, chronologies, and more!!! Manipula Math with Java  nearly 300 interactive Java applets to illustrate a variety of mathematical concepts. Math Archives  extensive reference for teaching materials, descriptive annotations, resources on math topics of your choice, links to university,
college, and community college mathematics and math
related departments, institutes, societies, and more!
MathCentre 
quick reference guides, practice and revision materials,
video tutorials, workbooks and online practice exercises(courtesy of the University of Tennessee at Knoxville) on many branches of
mathematics (from the UK)
Math
Department
Web
Pages  a list of home pages for math departments
listed in the 1995
NRC
rankingsMathematical Atlas, The  a collection of short articles designed to provide an introduction to the areas of modern mathematics and pointers to further
information as well as answers to some common (or
not!) questions.
Mathematical
Fiction  a database listing over 600 works of
mathematical fictionMathematical
Applets  for basic math, beginning algebra,
intermediate & college algebra, statistics,
calculus, etc. (courtesy of Larry Green)
Mathematically Sane  promoting the rational reform of mathematics education Mathematical Quotations  Mathematical Quotation Server (courtesy of Furman University Department of Mathematics) Mathematical Sciences Digital Library  an online resource published by the MAA  for both teachers and students of mathematics Mathematics Education and Training at the NSA  for college students and graduates (courtesy of the National Security Agency) Mathematics Pages by Jeff Miller  Earliest Uses of Various Mathematical Symbols, Earliest Known Uses of Some Mathematical Terms, Images of
Mathematicians on Postage Stamps, Ambiguously Defined
Mathematical Terms at the High School Level
Mathematics
Societies
& Institutions  an extensive list of
professional math societies and institutionsMathematics Specialties  Rankings of Mathematics Specialties at US Universities Mathematics Tutorials and Problems  free mathematics tutorials to help you explore and gain deep understanding of math topics Math Forum, The  one of the oldest online resources in mathematics with a particular emphasis on K12 mathematics Math in the Movies Page, The  a guide to major motion pictures with scenes of real mathematics (courtesy of Arnold G. Reinhold) Math League, The  bringing challenging mathematics materials to students from 4th  12th grades: contests, books, software, etc. Math News  from Science News Math Olympiad Resources  math contests from around the world (courtesy of MathLinks) Math on the Web  nice collection of links from the American Mathematical Society (AMS) Math Open Directory  another collection of math related links Mathsoft: Constants  essays devoted to constants from various subdisciplines of mathematics Math Songs and Poems  lyrics and performances (in MP3 format) on a variety of topics (courtesy of Vicki Young of Tennessee) Math Symbols, GIF and PNG Images  a collection of nearly 1200 bitmapped, 12point, transparent images of mathematical letters and symbols,
suitable for display on a webpage.
MathWorld Headline
News  Math News from Wolfram ResearchMiscellaneous Mathematical Utilities  rootfinding, maxima & minima, nequations in nunknowns, eigenvalues & eigenvectors, MIT Open Courseware: Mathematics  free access to MIT's Open Courseware!!! National Curve Bank  has a wide range of online mathematical resources, including an audio file of Tom Lehrer singing New Math (courtesy of Shirley
Gray and Stewart
Venit of the Department
of
Mathematics, and Russ Abbott
of the
Online Encyclopedia of Integer
Sequences  investigate
a sequence!Department of Computer Science, all at Cal State Los Angeles) Periodic Table of Mathematicians  some biographies in Periodic Table format Pi and Fibonacci Numbers  surprisingly (or not!), there are several formulae that use Fibonacci numbers to compute Pi... Pi Pages on the Internet  find out all you want to know (and don't want to know) about Pi (courtesy of The Joy of Pi, by David Blatner) Prizes in Mathematics (granted by the IMU  International Mathematical Union)  Fields Medal, Rolf Nevanlinna Prize, Carl Friedrich Gauss
Prize (with links to the Abel Prize and Ramanujan
Prize)
RecMath  Archive
of Recreational MathematicsRPI Mathematical Sciences Course Materials & Resources  self explanatory... S.O.S. Mathematics  a free resource for math review material from Algebra through Differential Equations (also has a nice links page!) Sound of Mathematics, The  files of algorithmic music determined by mathematics and the musical preferences of a human (which human???) Venny  an interactive tool for comparing lists using Venn Diagrams with support for up to 4 sets! Virginia Tech Regional Mathematics Contest  sponsored each fall by the Mathematics Department at Virginia Tech. More than 130 colleges and universities
throughout VA, DC, GA, IL, MD, NJ, OH, NC, PA, SC, TN,
WV and
other states are invited to participate each year.
What's
Special
About This Number?  interesting facts about selected
integers from 0 to 9999William Lowell Putnam Mathematics Competition Directory  The William Lowell Putnam Mathematics Competition is a North American math contest for
college students. Each year on the first
Saturday in December, over 2000 students spend 6 hours
(in two sittings)
trying to solve 12 problems. 
Physics
Constants,
Units, and Uncertainty  from the National Institute of
Standards and Technology (NIST)Eric Weisstein’s Physics World  extensive physics encyclopedia is the work of Eric Weisstein at Wolfram Research Fear of Physics  visual physics, physics dictionary, bad science section, homework help, ask a physics expert! Insultingly Stupid Movie Physics  explains how moviemakers violate the laws of physics  movies are rated GP (Good Physics), PGP (Pretty Good
Physics), PGP13 (children under 13 might be fooled),
etc.  they also do
the math!
Links
to
Departments of Physics, Engineering, and Mathematics
 extensive list for US colleges & universities,
some nonUSPhysLink  PhysLink.com: a comprehensive physics and astronomy online education, research and reference website (Great Site!
Check: Education,
Reference, Directories, and Fun tabs!!)
Physics
and
Astronomy Departments Worldwide Directory  from PhysLink.com: a
comprehensive physics and astronomyonline education,
research and reference website
Physics Central
 learn how your world works!Physics Fact Book  an encyclopedia of scientific essays Physics Fundamentals  Fundamentals of Physics, Puzzling Physics, Physics Glossary, How to Solve Problems, Physics
Misconceptions, Humor, Papers
Physics
of Racing  series of articles written by
Brian Beckman, physicist, and amateur racer

Science
EquationSheet.com
 commonly used equations in math & science,
constants, SI units, symbols, & unit conversions
(create your own sheets!)
Eric Weisstein’s Treasure Troves of Science  Astronomy, Biography, Books, Chemistry, Life Cellular Automaton, Mathematics, Music, and Physics is
the work of Eric
Weisstein at Wolfram
Research
FreeScience.info
 provides over 1700 free scientific books in
biology, chemistry, computer science, economy &
finance,
engineering,
mathematics, medicine, physics, etc.
Free
Science Videos and Lectures  Animals,
Astronomy, Biology, Chemistry, Genetics, Physics,
Technology, Water Life, Weather
Internet Encyclopedia of Science  an online AtoZ of science maintained by astronomer/author David Darling Intuitor  How to succeed through creative learning (physics, mathematics, brain building  chess), and The Intuitor Store M. C. Escher  the world of Maurits Cornelis Escher, the place for everything Escher (Gallery, Forum, Newsletter, Reading, Contest) National Science Digital Library (NSDL)  the nation's online library for education and research in science, technology, engineering, and
mathematics (courtesy of the National Science
Foundation  NSF)
Noggintwisters.com
 math and science puzzles to make you think!Optical Illusions  LOTS of cool illusions, check the first one and all the links at the end of the page (courtesy of Akiyoshi Kitaoka of Japan) Optical Illusions & Visual Phenomena  with explanations (courtesy of Michael Bach from Germany) Powers of Ten  travel across the universe, changing scale by just a few powers of ten dramatically alters your perspective! Science Constants  over 600 constants used in the sciences, listed alphabetically, some have links for more information (the site also has Equations,
Conversions, SI Units, and Symbols)
Science
Daily  your source for the latest
research news.Science Gems  great links to great science resources: more than 14,000 resources for students, parents, teachers, scientists, engineers, and mathematicians  sorted
by category, subcategory, and grade level
(courtesy of Frank
Potter)
Science
News Sites  Links for science news (General
Science, Physics, Astronomy and Space Science, Life
Science, Health and Medicine,Biotechnology,
Neuroscience and Psychology, Mathematics, Computer
and Technology, Nanotechnology, Earth and
Environmental Science)
Science Toys 
you can make at home with common household
materials, often in only a few minutes, that
demonstrate fascinating
scientific
principles (including a couple for mathematics
 check the Kaleidocycle!!!)
USMA
 The U.S. Metric Association, a national
nonprofit organization founded in 1916,
advocates U.S. conversion to the
International
System of Units (SI), a.k.a. the Modern Metric
System.

Engineering
Buckminster Fuller
Virtual Institute  explore his inventions and
visions of the future!Engineering Calculators  Calculators, Applets, Spreadsheets, Courses, Manuals, Handbooks, Simulations, Animations, Videos/Movies, etc.
(courtesy of Jim
Martindale's Reference Center)
Engineering
Fundamentals  an online destination for the
engineering community, where working professionals can
quicklyfind concise and
reliable information to meet the majority of their
daily reference needs
Engineering
Tool Box  Resources, Tools and Basic Information
for Engineering and Design of Technical ApplicationsHow Stuff Works  for the curious... 
Reference
212 Degrees (the
movie)  Go the extra degree!!!Academic Ranking of World Universities  published by the Institute of Higher Education, Shanghai Jiao Tong University, China Acronym Finder  find out what any acronym, abbreviation, or initials stands for CIA's World Factbook  updated periodically throughout the year (courtesy of the Central Intelligence Agency) Clock 1  HighTech/LowTech Clock 2  Interesting Clock Colleges and Universities  links to more than 3000 colleges and universities worldwide Colleges That Change Lives  discover colleges and universities that do not take the "beaten path" DOAJ: Directory of Open Access Journals  this service covers free, full text, quality controlled scientific and scholarly journals (includes over 3000
journals, about 1000 of which are searchable at the
article level, and over 165000 articles)
ERIC (Education Resources
Information Center)  an online digital
library of education research and information. ERIC is
sponsored by theInstitute
of Education Sciences (IES) of the U.S.
Department
of Education. ERIC provides ready access to
education literature to
Eric
Weisstein's World of Science  Biography, Physics,
Astronomy, Chemistry, and Mathematics Encyclopediassupport the use of educational research and information to improve practice in learning, teaching, educational decisionmaking, and research. Fact Monster  from Information Please Famous Quotes  very extensive list of quotations (searchable) FOLDOC (Free OnLine Dictionary Of Computing)  supported by the Imperial College of Computing I did not know that yesterday!  answers interesting questions Internet Anagram Server  finds anagrams for you (courtesy of wordsmith.org) IQ Comparison Site  various information: entrance criteria for high IQ societies, lists, data, etc. Mind Tools  essential skills for an excellent career! Oracle's ThinkQuest Library  provides innovative learning resources for students of all ages on a wide range of educational topics. Featuring over 6500
websites, the library is created by students from
around the world as part of the competition.
Portals
to
the World  links to electronic resources from
around the world!!! (courtesy of The Library of Congress)Refdesk.com  the single best source for facts! Top Research Universities Faculty Scholarly Productivity Index  compiles overall institutional rankings of 375 universities that offer the Ph.D.
degree (courtesy of The
Chronicle of Higher Education)
WikiHow  The
HowtoManual that you
can edit.Wikipedia  the free encyclopedia with over 9 million articles in 253 languages (over 2 million articles in English) WorldCat.org  the world's largest network of library content and services, over 1 billion items in more than 10,000 libraries worldwide! 
Humor
Cartoons of Clay
Bennett  cartoons of the Pulitzer Prize winning
Clay Bennett
Cockeyed.com  tough to describe, take a look...I discovered it via the How Much is Inside? section. Good Clean Humor, Stories, and Illustrations  on a variety of topics Happy Face Math  Cute! (thanks to Charlie Smith) Jokes and Science  thanks to Jilian Rubin Ph.D. Comics  Piled Higher and Deeper: life (or the lack thereof) in academia Physics and Astronomy Fun  from PhysLink.com: a comprehensive physics and astronomy online education, research and reference website Science Jokes I  mathematics, physics, chemistry, biology, etc. Science Jokes II  a chance to learn a little science with a smile on your face Science Jokes III  very extensive list!!! Science Jokes IV  jokes and humor related to astronomy, biology, chemistry, geology, science in general, and much more!! (actual test
answers, scientific dictionary, songs, word play, ...)
This
is True  reports on weirdbuttrue news
items from legitimate newspapers from around the
world (never tabloids)
"Truth is
stranger than fiction, because fiction has to
make sense."
