 Free Math Tutoring  Doug Simms
Online instructional videos, many accompanied by example and exercise sheets. Use of the site is free.
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 Free Math Worksheets
Free math worksheets to download, print, and practice addition and subtraction; multiplying; divisibility and factors; greatest common factor (GCF); least common multiple (LCM); simplifying numerical fractions; converting percents, decimals, and fractions;
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 Free Math Worksheets  Jill Brett
Free printable math worksheets, some featuring trademarked characters such as Angry Birds and Dora the Explorer.
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 Free Math Worksheets, Word Problems, Math Quiz, Math Puzzles and Free Math Games  MathOcean.com
This blog is dedicated to provide free worksheets, word problems, simple problems, story problems, math quizzes, math puzzles, math games and much more.
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 Free Multiplication Practice  Fran Hilgendorf, Home Education Resources
Colorful multiplication worksheets and activities in easy to print PDF format.
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 Free Puzzles  Jimmie Dean
A collection of puzzles and brainteasers, divided into geometry, logic, math, weight, moves, and miscellaneous. Each puzzle includes a hint, and solutions are available through email. Online games and puzzles include a chess knight game and Hangman.
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 Free Teaching Resources  BossBrains
Free resources for educators, including: customizable worksheets, quizzes and timed tests; flash cards; telling time clocks; and AwardMaker (customize and print awards and certificates).
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 Free Test Online
Math and science practice exercises and quizzes for SAT, ACT, Advanced Placement Calculus, GMAT, GRE and CLEP tests.
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 From Galaxies to Electrons (Math Chat)  Frank Morgan, MAA Online
What are the largest and smallest objects anyone has ever seen with the naked eye? heard? felt? (For the first part, the whole object must be seen, though not necessarily in full detail or from every side.)
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 From Lewis Carroll to Archimedes  Cut the Knot!, Alexander Bogomolny
On March 29, 1879, Vanity Fair began offering its subscribers a new weekly puzzle invented by Lewis Carroll... on March 17, 1953 Frank Gray, a research scientist at Bell Labs, filed patent no. 2632058, for the Gray code encoding
the vacuum tube. An ndigit
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 The Fruit Game
An interactive game in which players take turns removing fruit from the table according to the rules. The player who removes the last fruit from the table loses. Based on the mathematical puzzler known as the game of Nim.
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 f(t)  Kate Nowak
A blog by a selfdescribed "fulltime math teacher, curriculum inventor and refiner, adolescent listener, correspondencetoparents writer, practice problem feedback giver, and examplesetter" who has taught high school math since 2005. Posts, which date
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 funmaths  Fundamental Software
Download mathrelated games for Windows (the Rocky's Bouncer algebra game is free; others are shareware.) Teachers can trade worksheets online: everyone may see the measurement worksheets, but the other categories require that you submit your own worksheet
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 Funny Arithmetic  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
A Java game: using arithmetic, logical, and bitwise shift operators and parenthesis, build an arithmetic expression with as many Base digits as specified in the Number of occurrences. Your expression should evaluate to the specified Goal. For example,
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 Fun, Puzzles, Travel  Paul Bourke
Brain twisters, arranged by approximate level, and designed for the most part to require no particularly advanced mathematical skills. Illusions include impossible triangle, MullerLyer, bad box, and Colours.
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 Fun with maths!  Stuff Media, U.K.
Puzzles for which you need shockwave installed on your computer. (You can download it from this site.) Number Square (add numbers and see them grow, smash them with a fist, make patterns); Think of a number between one and nine, multiply it by 5... will
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 Fun With Num3ers
A blog of mathematical puzzles, mostly in number theory. Posts, which date back to January, 2012, have included "Using digits 1, 2, 3, 4, 5, 6, 7, 8 and 9 only once (Part Two)," "Pythagorean triple – Digits Reversed," "Concatenation puzzle: when (A 
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 The Fun Works  Education Development Center, Inc. (EDC)
A career exploration digital library for middle school youth (ages 1114 yrs), designed to capture imaginations and direct youth toward careers in science, technology, engineering and mathematics (STEM). It places particular emphasis on engaging youth
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 Furman University Wylie Mathematics Tournament  Furman University, Greenville, South Carolina
A page with links to annual Furman University mathematics tournament exams for 19961999, and to postscript or PDF files of Senior and Junior Written Problems, with answer sheets. The date of the 2000 Furman University Wylie Mathematics Tournament is
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 Further Mathematics Support  Mathematics in Education and Industry
The Further Mathematics Support Programme (FMSP) promotes advanced math across the United Kingdom (UK) through professional development for teachers and tuition to students in Britain. Further Maths is an AS/A level qualification which both broadens and
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 Futility Closet  Greg Ross
"An idler's miscellany of compendious amusements." Math posts, which date back to January, 2005, have included puzzles, curios, and trivia from the lives of famous mathematicians  all "selfcontained and written as concisely as possible"  such as
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 Gadgets  Jan Gombert
Gombert's five "gadgets" provide simple challenges that combine addition, multiplication, and two or threedimensional geometry. Balancing Act shows three values on a beam to balance by addition. Make a given perimeter or area by resizing the figure
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 Gamco Education Materials: Educational Software for K12
Programs for Macintosh and Windows, with downloadable demo versions. Math programs include: Skillbuilders (perimeter, area, volume, whole numbers, fractions); Paws and Pyramids (perimeter/area/volume game); Word Problem Square Off Series; Touchdown Math
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 Gamelan  The Official Java Directory  EarthWeb, Inc.
Gamelan's primary mission is to serve as a central registry and directory of Java resources. Much like Yahoo!, Gamelan collects links to resources stored on other sites across the Web. However, unlike Yahoo!, Gamelan's mission is specific  Gamelan collects
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 The Game of Go  JeanClaude Chetrit
A page for Go players interested in mathematics or abstract reasoning. How many static positions exist and how many are legal? This is purely an exercise in counting (combinatorics). See also Chetrit's conjectures about playing Go on a 2 by 2 board and
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 Games and Puzzles  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Almost 40 games or puzzles, with extensive discussions and solutions. Examples include the Monty Hall Dilemma, Lewis Carroll's problem; the game of Nim, the 3 glass puzzle, Northcott's game, the Tower of Hanoi, and many more. Most require a browser capable
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 Games Conceived  Leroy Quet
Quet's blog, begun in September, 2008, describes his "simple games," which include Triangle Grid Of Coprimality; LineSegments In Circle; Turn It Around  Multiply/Add Grid; Up And Up, Grid Solitaire; Vertex/Intersection Polygon Game; Diagonal/Straight:
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 Games for the Brain  Philipp Lenssen
Race the "IQ Score" clock while playing JavaScript brain teasers such as NumberCruncher (perform arithmetic calculations following order of operations) and Marsmoney (calculate the values of different currencies). The site also features several memory,
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 Games on Graphs (MegaMath)  Nancy Casey; Los Alamos National Laboratory
Students use algebraic methods to explore, model, and describe patterns and functions involving numbers, shapes, data, and graphs in problemsolving situations and communicate the reasoning used in solving these problems. Graphs, stories and games provide
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 Game Theory .net  Mike Shor
Lecture notes, text book reviews, and interactive applets and games, print and online tests and quizzes, a section on game theory in pop culture, and links to other resources on the web.
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 Gardner Index  Lee, Kluepfel
An index to fifteen books containing collections of Martin Gardner's articles from Scientific American.
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 Gardner's Web  David Cox
A newsletter containing articles written by students, interesting Web links, and taxing puzzles.
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 Gary Ramseyer  Dept. of Psychology, Illinois State University
A professor of psychology, specializing in statistics and measurement. His site features the First Internet Gallery of Statistics Jokes and a column on statistical topics of interest, with an archive. Columns include: the birthday problem (given a room
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 Gasoline Sales  Reading a Chart  NASA Lewis Learning Technologies Project
This chart shows the actual and predicted gasoline sales for one year. During which month was there the greatest difference between the predicted and actual gasoline sales? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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 Gateways to Advanced Mathematical Thinking (GAMT)  Michelle Manes; Education Development Center, Inc. (EDC)
The goal of this project is to research the ways in which high school and college mathematics students come to acquire flexible understandings of essential concepts needed for analytic and algebraic thinking. Integral to this research effort is the development
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 Gathering for Gardner  Tom Rodgers
A collection of sites related to math puzzles on the Web. Sections on puzzles, recreational math, geometry; societies and organizations, math journals; mazes, illustions, general math, matic/gambling; software; old links; online lock puzzles; bookstore.
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 Gaussian Curvature (Geometry and the Imagination)  Conway, Doyle, Gilman, Thurston; The Geometry Center
What is the curvature inside the region on a sphere exterior to a tiny circle? On a polyhedron, what is the curvature inside a region containing a single vertex? two vertices? all but one vertex? all the vertices?
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 Gavin's Calculus Projects  Gavin LaRose, University of Michigan Math Department
Calculus I, II, and III projects and archives. Recent or current projects include: Calc I: Caustic rain, Profitable production. Calc II: Wonder drugs, Floating, Spagopolis. Calc III: Manufacturing, Production costs. Project archives from 1995 on. Also
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 GCSE Maths  Edexcel
Specimen papers and mark schemes, teachers' guides, linear and modular specifications, resources and publications, support tools, news, training events, and more from the test prep company used by over two thirds of schools and colleges in the UK.
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 GCSE Maths Quizzes  Education Quizzes
Dozens of online maths quizzes to practice concepts tested on the UK's General Certificate of Secondary Education. Choose from receiving the correct answer after each question or seeing incorrectly answered questions again later. Freely sample some of
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 GCSE Maths Tutor
A free maths revision resource for GCSE/Secondary/High School math. The site offers worksheets, interactive programs, videos, a blog, a discussion forum, and more.
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 Gene Abrams
Beamer files for seminars and colloquia on Leavitt path algebras, and activities related to mad veterinarian puzzles": "The Graph Menagerie: Abstract Algebra meets the Mad Veterinarian"; "The Graph Menagerie: Abstract algebra and the Mad Veterinarian"
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 GeniusCorner  Dheeraj Khatter
Adaptive online learning platform for practicing math at your own pace. Freely access multiple choice and fillintheblank math quizzes, organized by grades from preK through eighth; GeniusCorner keeps time, scores responses, and offers explanations.
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 Geogirls  Jenine Newman
Choose links, answer geometry questions, and gather clues to solve the mystery of the missing rhombus diamond. Read about the perfect world of geometry, learn about "GeoGuys n Gals of History," or consult the GeoDictionary of geometry terms.
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 The Geomaths MathHelp material  University College London (UCL)
Part of the Interactive Mathematics and Geoscience Education (IMAGE) project, Geomaths MathHelp provides mathematics selfstudy material embedded within the geological sciences. MathHelp "notebooks" cover specific mathematical topics accessed through
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 The Geometer's Sketchpad: Classroom Resources on the Web  Math Forum
A page of links to dynamic interactive geometry resources for Sketchpad. GSP at Key Curriculum Press; classroom introductions and tutorials; courses, classroom materials, and student work; and general information. See also Sketchpad Resources at the Math
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 The Geometer's Sketchpad: Classroom Resources  The Math Forum
Sketchpad and JavaSketchpad dynamic interactive geometry resources on the Math Forum Site: sketches, activities, and tours; MAA meetings and groups with presentations and sample sketches; Forum Sketchpad Web Units (Algebra & Calculus; Vectors; Morphing
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 Geometric Construction with the Compass Alone  Interactive Mathematics Miscellany and Puzzles, Alexander Bogomolny
Information and exercises about geometric constructions: almost everything you can do with a ruler and a compass you can do with the compass alone.
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 Geometric Shapes (SMILE)  Violet M. Nash, Spencer Math and Science Academy
A 2nd grade lesson on identifying geometric shapes using colors and math problems. Also see a followup lesson on geometric shapes and making a vest. From the Geometry and Measurement section of a collection of almost 200 single concept lessons by the
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 Geometry Constructions  Barry Sanders
Constructions made using the Geometer's Sketchpad: Malfatti Circles (construct 3 circles internal to any triangle, each circle being externally tangent to the other two, and each touching adjacent sides of the triangle); Hart Circle (construct the circle
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