 geometryprecollege  Math Forum
A discussion group accessible as a Webbased discussion, a mailing list, or a Usenet newsgroup, for discussions concerning school geometry curricula, teaching geometry, new software and texts, problems for students, and supplementary materials such as
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 Geometry Reference Sheets & Mnemonics (S.M.A.R.T.)  Math Share Shop
Methods of proving two angles congruent; Two angles are congruent, if...; Two triangles are congruent when...; When proving triangles congruent...; Right triangles; Quadrilaterals; Formulas of the Area; Summarizing geometry of the Triangle; Coordinate
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 geometrysoftwaredynamic  Math Forum
A discussion group accessible as a Webbased discussion, a mailing list, or a Usenet newsgroup. This group focuses on discussion of such geometry software programs as The Geometer's Sketchpad and Cabri Geometry II. Read and search archived messages; and
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 Geometry through Art  Norman Shapiro
Lesson ideas, facilitation suggestions, lists of materials needed, and handouts to photocopy. Norman Shapiro focuses on the student as investigator, learning through doing, and using perception to stimulate the motivation for more developed concepts and
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 Geometry Turned On: Dynamic Software in Learning, Teaching, and Research  J. King and D. Schattschneider, Editors
This book contains twentysix papers about aspects of dynamic software for geometry. The book does not contain software itself, but this site includes downloadable files for many of the papers in the book. For a discussion of what the book is about, see
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 George Pólya  Australian Mathematics Trust
A biography of the mathematician that discusses his solution of the random walk problem, influential books on problemsolving, Enumeration Theorem and Necklace Theorem, and efforts in curriculum development, reform, and competitions. The biography mentions
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 George Washington School Copy Book  Library of Congress
Scans of a school copy book handwritten by the future first U.S. President in 1745, when 14 or 15 years old. Together with a second book, these reveal geometrical definitions and problems, surveying, mensuration, multiplication and division, simple interest,
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 George Washington: Surveyor and Mapmaker  Library of Congress
An essay on George Washington's lifelong association with geography and cartography, "Tracing the Maps in George Washington's Life" contains the chapters Washington as Public Land Surveyor  Boyhood and Beginnings; Washington as Public Land Surveyor 
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 George W. Hart: Index  George W. Hart
An index to some of the areas covered by Hart's Web pages: Geometric sculpture; Encyclopedia of Polyhedra  over 1000 virtual polyhedra; Pavilion of Polyhedreality  images and geometry links; Hart's upcoming book about Zome Geometry; research and publications;
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 Gepeto Software  Joe Tompkins
MathMaker:Skills and MathMaker:Fractions  programs to purchase for creating instant worksheets, tests, and math games.
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 Gerard M. Enright
The resume of a mathematics professor at Mary Immaculate College in Ireland. Articles on using BASIC programs in the classroom (to search for numbers that are both square and triangular and to investigate a conjecture about a function of the nonnegative
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 German Language Math Resources  Math Forum
Mathematics and math education resources available online in German, collected by the Math Forum. Sites are organized by: Research Centers, Articles and Publications, Software, and Other Educational Resources.
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 Get Math.com
CDs and DVDs: Solving Algebra Word Problems, Beginning Algebra, Intermediate Algebra, and The Get Math Series (10 textbooks on various math subjects). Each learning system includes embedded video of mathematic professors explaining specific exercise sets.
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 Getsmarter.org  Council on Competitiveness
A free web site designed to help improve math and science education. Interactive quizzes, games, and tutorials allow students to learn more about specific topics and improve their skills. MSTV, a series of interactive modules, shows how math and science
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 Getting Across the River  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions such as "A man has a goat, a wolf and a cabbage. He must cross a river in a boat that will only carry one item at a time...."
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 Getting Slammed in Tennis  Ivars Peterson (MathTrek)
One arena where it's possible to test the apparent relationship between psychological momentum and sequences of successes or failures is bestoffive tennis matches. The question is whether the result of the first set changes the probability of success
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 Getting To Know You (SMILE)  Kathy Koval, Randolph School
A lesson for any grade designed to teach students to use a ruler and measure accurately to the nearest inch; draw and label properly different graphs (line, pie, bar, pictograph); estimate/record measurement on a number line using intervals; and collect
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 GFBrandenburg's Blog  Guy Brandenburg
In his opening post, Brandenburg wrote, "I have been doing some research on educational progress (or lack thereof) in the Washington, DC school system before and after the reign of our mediadarling school Chancellor, Michelle Rhee...." The retired high
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 GIFsmos  Lusto, Chris; Luberoff, Eli; and Merrill, Jason
Takes any animated Desmos plot and converts it into a dynamic graphic. GIFsmos lets you determine the size of the resulting gif animation, and toggle its frame interval from 0.1 to 1.0 seconds.
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 Gifted and ADD/ADHD  Carolyn K., Hoagies' Gifted Education Page
Articles and reports on attention deficit disorder and attention deficit hyperactivity disorder, primarily as related to the education of gifted children.
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 Gifted Children with Special Needs: Articles and Research  Carolyn K., Hoagies' Gifted Education Page
Articles and reports on children who are learning disabled, in particular in the context of those who are also gifted children.
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 Gifted LearningLinks  Center for Talent Development, Northwestern University
Gifted LearningLinks offers academically talented students in Kindergarten through Grade 12 the opportunity to take enrichment, high school honors, AP and university credit courses onlinefrom wherever they are, whenever they want, at a pace appropriate
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 Gifted Programs: Articles and Research  Carolyn K., Hoagies' Gifted Education Page
Articles and reports on education programs for gifted children: schools for the gifted, early college, Saturday and summer programs, and talent searches.
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 Girls' Angle
Girls' Angle is a math club for girls and a supportive community for all girls and women engaged in the study, use and creation of mathematics. By mentoring, publishing the bimonthly Bulletin, and solving math problems on commission, networking professional
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 Girls' Attitudes, SelfExpectations, and Performance in Math  Michelle Maraffi; Math Forum
For those concerned about girls' negative attitudes and expectations in the study of mathematics who want to improve and increase girls' performance and learning in math: an annotated bibliography of articles and studies designed to give teachers and
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 Girlstart
An inschool educational outreach program encouraging girls in math, science, and engineering in Texas. SmartGrrls collaborates with parents, schools, higher education, industry, and community groups to provide programs, strategies, and resources to increase
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 GirlTECH  Cynthia Lanius; Center for Research on Parallel Computation (CRPC)
GirlTECH was a teacher training and student council program that encouraged young women to pursue careers in mathematics and science, offering intensive technology training to explore innovative teaching strategies for gender equity in the classroom through
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 Glad2Teach  Glad2Teach.com
Webbased live math tutoring for students in grades 412. Its objective is to make math learnerfriendly for the students, based on the Constructive Theory of Learning. It uses real life examples and anecdotes to put the math topic in context for the
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 GlassLab Games  GlassLab, Inc.
This game studio develops learning games that "make learning visible" and studies their impact on improving student outcomes. Titles include SimCityEDU; Wuzzit Trouble, developed by BrainQuake Inc.; Slice Fractions, developed by Ululab; and Game Over
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 A Glitch in Time  Ivars Peterson (MathLand)
On June 30, time stood still for one second. Clocks stopped and an additional second was added to the day. This adjustment was needed to bring the official time into agreement with Earth's eversoslowly decreasing rotation rate. It was the 21st leap
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 Glitter Trap (MatheMUSEments!)  Ivars Peterson (Math Muse for Kids)
You've probably looked at your distorted reflection in a shiny holiday ornament, but you may be surprised to learn what the reflections in a pyramid of silvery balls are like. The behavior of light in a stack of mirrored balls can help mathematicians
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 Global Climate Change: Research Explorer  the Exploratorium
Explore scientific data relating to the atmosphere, the oceans, the areas covered by ice and snow, and the living organisms in all these domains. Get a sense of how scientists study natural phenomena, how researchers gather evidence, test theories, and
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 Global Connections Online  National Semiconductor Corporation
A Webbased workshop that provides teachers with knowledge, skills, and support to incorporate the Internet in their classrooms and curricula. Learning objectives include explaining basic concepts relating to the Internet; using the features of a web
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 Global Math Department  Megan HayesGolding, community organizer
Professional development among math teachers sharing what they've learned "... 'cause we don't want our classes to suck the energy from students." Files have included "ZERO_Hit_Me_Game," "TINSpire_Quick_Tip," and "Zero_Game_Instructions." BigMarker community
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 The Global Schoolhouse  Global SchoolNet Foundation (GSN)
A site for teachers, parents, teens, and kids, with articles on telecommunication in the classroom, contests, events, projects, an alphabetical site index, and an annotated list of all articles. Formerly called FrEdMail (Free Educational Mail), GSN is
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 The Global Schoolhouse  Global SchoolNet Foundation (GSN)
The Global Schoolhouse focuses on projects for lifelong learning and uses the most powerful Internet tools, including live video, to link K12 classrooms to their communities and to other children around the world. Projects that discover and document
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 Global Student Network  Global Student Network, LLC
Provider of online homeschool curriculum, delivered entirely over the Internet. Over eighty courses for grades 212. Free online demo.
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 Global Sun Temperature Project  Stevens Institute of Technology, CIESE
An Internetbased multidisciplinary project (10 March  13 June 2003) that allows students to collaborate with other students and with experts online in determining how their locations affect their average daily temperature and hours of sunlight. Students
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 Globewide Network Academy (GNA)
A worldwide nonprofit consortium of educational and research organizations for support of online courses and distance education. Its mission is to improve education by creating a marketplace for courses as well as to offer administrative and technical
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 Glossary for Math Standards  OASIS
From Absolute Value to Volume  simple, short definitions/descriptions of math terms. From Online Activities for Standards in School (OASIS), a system for locating standardsbased Internet science and math curriculum materials and resources. A Colorado
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 Glossary  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A glossary of terms that also serves as an alphabetical index to Bogomolny's site. Each term is linked to an illustrated essay.
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 Glossary of Internet Terms  Matisse Enzer
An ongoing project, currently comprised of over 100 terms from ADM to digerati to Router to WWW.
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 GoConqr  Examtime
Animated mind maps, quizzes, notes, slides, flowcharts, and other crowdsourced interactive study resources that flip, shuffle, and track your progress — such as a set of 22 flashcards for New GCSE Maths required formulae — or create your
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 goENC.com  ENC Learning, Inc.
Resources and support for math and science educators needed to help raise student achievement in these vital subjects. Search over 27,000 print and multimedia curriculum resources and professional development materials. Webbased resources are only available
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 GoKnow!  GoKnow, Inc.
GoKnow, Inc. intends to be the leader in technology pervasive, standardsbased, scientifically validated curriculum and educational tools. GoKnow offers tools for handheld devices' use in the classroom, professional development and consulting services.
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 The Golden Mean  Rashomon (K. Wiedman)
The Golden Mean or Golden Section was derived by the ancient Greeks. Like pi, the number 1.618... is an irrational number. Both the ancient Greeks and the ancient Egyptians used the Golden Mean when designing their buildings and monuments. Links to pages
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 The Golden Ratio  Andi, Mel, and Shuj
An introduction to the golden ratio, also known as phi: its connection to the Fibonacci sequence, related constructions (star, line segment, rectangle, and spiral), and connections to biology, history, and aesthetics. Site also includes a glossary and
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 The Golden Ratio  Blacker, Polanski, Schwach; The Geometry Center
Introduction to the Golden Ratio and Fibonacci Sequence. Instead of simply supplying definitions and asking the student to engage in mindless practice, students work through several activities to discover the applications of the Golden Ratio and Fibonacci
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 Golden Ratio, Fibonacci Sequence  Math Forum, Ask Dr. Math FAQ
About the Golden Ratio (or Golden Section or Golden Mean), the Golden Rectangle, and the Fibonacci Sequence.
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 The Golden Ratio  John Kyrk
Animations for building the golden rectangle from the Fibonacci series; clockwise and counterclockwise spirals; how the proportions of the human body display the golden ratio.
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