Mathematics teachers at all levels have a lot to savor online, from lessons and resources to simulations and projects. Applications and access to real life extensions have never been easier. 

AIMS - http://www.aimsedu.org/ archives, puzzles, downloads, curriculum and ideas for Math and Science

 ALGEBRA ONE - http://www.algebra-online.com/ free private tutoring, live chat, and a message board; questions and discussions relating to all levels of mathematics (not just Algebra) are welcome.

ASK DOCTOR MATH - http://www.forum.swarthmore.edu/dr.math/dr-math.html comprehensive archives for common queries plus a link to contact Dr. Math yourself if you can't find your answer on his site.

 CHANGEMAKER - http://www.funbrain.com/cashreg/index.html a Funbrain simulation in which students can practice making change for a dollar or for one-hundred dollars.

 CORNELL THEORY CENTER - http://www.tc.cornell.edu/Edu/MathSciGateway/about.html Math and Science Topics, newsletters, articles, funding, cross-curricular connections.

 ELEMENTARY PROBLEM OF THE WEEK - http://forum.swarthmore.edu/sum95/ruth/elem.pow.html challenges elementary students with non-routine problems and encourages them to verbalize their solutions. In conjunction with a companion project, registered students will have their submissions answered by "Visiting Math Mentors" and will also have the opportunity to assume the role of mentor

 E-MATH - http://www.ed.gov/pubs/emath/ a guide to e-mail based volunteer programs designed to help students master challenging Mathematics, Science and Technology.

ENCHANTED MIND - http://enchantedmind.com/whatsnew.htm the purpose of this site is to create a daily experience of humor, inspiration and creative problem solving . 

ESCHER ART GALLERY - http://www.auburn.edu/~churcwb/escher.html Take tesselations to its limits with these Escher prints; fast loading thumbnails lead to larger images

 EUCLID'S ELEMENTS - http://aleph0.clarku.edu/~djoyce/java/elements/elements.html JAVA applets illustrate all 13 Books - even those in the last three books on solid geometry that are three-dimensional; superb stuff for HS Geometry

 THE EXPLORER - http://explorer.scrtec.org/explorer/ a collection of educational resources (instructional software, lab activities, lesson plans, student created materials) for K-12 mathematics and science education; browse through mathematics and science education curricula (we plan to expand to other curricula) or conduct searches that focus on specific interests.

GEOMETRY CENTER- http://www.geom.umn.edu/ projects, Java applications, archives, downloads, materials  

GRAPHING LINEAR EQUATIONS - http://www.bremenbraves.com/algebra/index.html awesome application of JAVA utilizing a calculator, a Plotter which can plot functions, differentials and integrals (including trigonometric functions), quizzes, tests, projects and puzzles - a gem!

 GUIDE TO MATH & SCIENCE REFORM - http://www.learner.org/theguide/ comprehensive searchable database with concise information on initiatives and organizations responding to America^Òs call for better science and mathematics education for all K-12 students - top notch. 

HISTORY OF MATHEMATICS ARCHIVE - http://www-groups.dcs.st-and.ac.uk/~history/index.html nice overview of the history behind the Math: Biographies Index, History Topics Index, Birthplace Maps, Mathematicians of the day, Anniversaries for the Year, a Famous curves JAVA index and Chronologies

 INTERACTIVE MATH - http://www.cut-the-knot.com/ games and puzzles, arithmetic and algebra, geometry, probability, fast reckoning, mathematics as a language, proofs in mathematics, the many ways to construct a triangle - and many teacher ideas and activities.

MATH ARCHIVES - http://archives.math.utk.edu/ archives, searchable database, software, teaching materials and links  

MATH CENTRAL - http://mathcentral.uregina.ca/ in English and French: teacher talk, problem solving, bulletin board and resources.

MATH FORUM: PRE-K LESSONS - http://forum.swarthmore.edu/teachers/pre-k/lessons-individual.html a dozen approaches to developmental Math concepts for the earliest learners; can be adapted for Kindergarten and primary grades

 MATH MAGIC - http://forum.swarthmore.edu/mathmagic/ MathMagic posts challenges in each of four categories (k-3, 4-6, 7-9 and 10-12) to trigger each registered team to pair up with another team and engage in a problem-solving dialog. Superbly done

 MATH NEVER DIES - http://despina.advanced.org/17932/ "You have infiltrated the secure site of the Hex Agency. Your mission, if you choose to accept it, is to track down international criminals using your Math skills"; covers algebra, geometry and trigonometry.

MATH-SCIENCE NUCLEUS - http://msnucleus.org/ curriculum, technology, research, implementation strategies, and technology applications. 

MATHEMATICS LESSONS DATABASE - http://www.mste.uiuc.edu:591/mathed/completelist.html Searchable database of Math lessons from the University of Illinois at Urbana Champaign.

PBS MATHLINE - http://www.pbs.org/teachersource/math/ concepts, challenges, resources, assessment, teaching tips, jobs, cross-curricular connections.

PLANE MATH - http://www.planemath.com/activities/pmactivitiesall.html three different levels of problem solving activities on topics like elapsed time, capacity, measurement, budgeting money and design engineering - great for middle grades

 PROBLEM SOLVING TASK CENTERS - http://www.srl.rmit.edu.au/mav/PSTC/ endless problems to solve from elementary through secondary, with attention given to Task Centers in Australia and Sweden

 SCHOOL PAGE MATH - http://www.eyesoftime.com/teacher/math.htm links to algebra, geometry, probability, statistics, puzzles and general interest Math sites.

SYMMETRY AND PATTERN: THE ART OF ORIENTAL CARPETS - http://forum.swarthmore.edu/geometry/rugs/index.html the study of symmetry offers one approach to analyzing patterns in Oriental carpets. Through symmetry analysis we may identify areas of pattern that exhibit expected repetitions, and areas that vary from that expectation

 THINK QUEST STOCK GAME - http://tqd.advanced.org/3096/61game.htm use real Wall Street quotes to invest and develop a hypothetical portfolio

 THINKS.COM - http://thinks.com/ puzzles, games and lots of materials to promote problem solving strategies

 TOTALLY TESSELATED - http://library.advanced.org/16661/ history, essential, mosaics, tilings, Escher, and "Beyond" - another nice site on these visual pattern puzzles

 TREASURY EDUCATIONAL LINKS - http://www.ustreas.gov/education.html over a dozen places to visit concerning money presented by the United States Treasury - nicely done

 21st CENTURY PROBLEM SOLVING - http://www2.hawaii.edu/suremath/home.html an evolving encyclopedia of solved problems in mathematics, physics and chemistry. The main focus is on pre-college algebra

 A WALK THROUGH TIME - http://physics.nist.gov/GenInt/Time/time.html based on the August 1992 Department of Commerce Publication "A Walk Through Time," this site covers Ancient Calendars, Early Clocks, Revolution in Timekeeping, The "Atomic Age" and World Time Scales.

WHAT GOOD IS MATH? - http://www.richmond.edu/~ed344/96/math/ geared for upper elementary, this site uses hypercard stacks, links and simulations to help students understand the value of Math