 freemathtexts.org  Alain Schremmer
Original texts that emphasize a very few but very powerful ideas; appeal to common sense and make no assumption of any kind about the students; and focus on helping readers convince themselves about mathematics. Written for use in developmental mathematics
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 Function Machines  Maria Droujkova, Dmitri Droujkov; Natural Math
For children and adults who are starting to develop the concept of function. The authors advise approaching the concept early in life using common sense and intuition, returning to it again and again, each time with a new level of understanding. The units
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 Functor  Jordan Touzsouzov  Mordred
Math software for the graphical analysis and display of one and twoargument functions z = f(x, y), using OpenGL. A beta version is available for Win95/98 and WinNT.
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 The FUNKtion  Appreciating Math through Art  ThinkQuest 1996
How to do really hard graphic stuff. Tilings, Fractals, Sierpinski Gaskets, animations, pictures, links. Math "crash courses" on Complex Numbers; Magnitude and the Pythagorean Theorum; Functions; and 3D.
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 A Game of Numbers  Joseph Michels
This puzzle game for Windows, Mac, or Linux requires math and logic skills to solve increasingly difficult challenges  from basic math operations to divisibility, algebra, functions, and more. The builtin editor also lets players create their own levels,
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 Gary Haynes  Gary Haynes
Course syllabi, lesson plans, homework, and objectives. Visit "Tangrams and Other Games" for an interactive tangram story and a Flash presentation on how to develop an understanding of functions through the use of the motion sensor.
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 GEM: Gateway to Educational Materials  National Library of Education (NLE)
A database for education links, intended to be more useful for teachers than a search engine. It records the resources of its consortium members (information on joining the consortium is available onsite). Users are able to: browse through lists organized
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 General Mathematics, AM (Funk & Wagnalls Multimedia Encyclopedia)  Lycos Zone: Mathematics
Short articles on basic mathematics, including biographical information about mathematicians, from the abacus to Gaspard Monge.
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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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 Geometric Functions  Scott Steketee
Activities to develop function concepts with the "compelling kinesthetic experiences and opportunities for explicit discourse" available through geometric transformations (reflections, rotations, translations). Geometric Functions resources fulfill the
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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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 Graphing Applet  Greg Vogl
This graphing Java applet illustrates variable substitution and function composition by encouraging the user to experiment with variables and look at a range of functions  logarithmic, trigonometric, exponential, and more. Parameters include xmin and
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 Growing Exponentially  Heather Kohn
Blog of "reflections on teaching math and striving to do better each day than the last." Posts, which date back to August, 2012, have included "Olympic Fever," "Work in your head, Points in my head," "Graphing Calculator Activities," "Absolute Value Project,"
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 Hamilton's Math to Build On  Johnny & Margaret Hamilton
Simple, straightforward explanations, drawings, questions and answers from the book Math to Build On by Johnny & Margaret Hamilton (copyright 1993). Excerpts offer pages on: Angles, Degrees, Variables & Constants; Squaring Numbers; Square Roots;
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 Harry O'Malley
Blog by a math teacher who believes "... that learning to use mathematics changes people's lives in profound and valuable ways," and describes himself as "obsessed with making that happen for people. I am convinced that recent advancements in technology
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 High School Notebooks  George Beck; MathSource
High school Mathematica notebooks in two different styles, for teachers to use either directly or as examples of what they might want to imitate or avoid. One style has little explanation and is meant to encourage the student to experiment with the functions
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 History of Mathematics  Carl Eberhart; Dept. of Mathematics, Univ. of Kentucky, Lexington, KY
Information and Maple worksheets on Egyptian fractions and geometry, Babylonian numeration, Hippias and his Quadratix, cubic equations, trigonometry until Ptolemy, curves, and more. Also examples of student projects. A spring 1999 course on the history
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 Ideas, Concepts, and Definitions (MegaMath)  Nancy Casey; Los Alamos National Laboratory
A glossary and reference page to help students learn more about mathematics and find out what some of the special words mean. Topics: Doing What Mathematicians Do; Truth and Proof; Mathematical Objects and Their Properties; Modeling and Abstraction; Algorithms;
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 IMSA Math Journal  Michele Micetich; Illinois Mathematics and Science Academy
A journal published annually since 1993; each issue contains articles, problems, and activities spanning a wide variety of topics of interest to high school mathematics teachers and students. Articles are available in both online and downloadable versions.
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 Intelligent Tutor Math Educational Software, Inc.
The programs in the Intelligent Tutor software series contain tutorials designed to help students learn and master Grades 712 math subjects. The programs are designed with school versions for use in schools, and home versions for individuals in selfstudy
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 Interactive Mathematics Online  ThinkQuest 1996
Algebra (Postulates  Things you can do with equations and inequalities, Function Basics and Simple Graphing, Kinds of functions (periodic, odd, even, etc.), Function Squashing); Geometry (an introduction, applications, glossary, sample problems); Trigonometry,
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 Introducing Mathematics
This website looks at some areas of mathematics that are not familiar to most people, such as Ramsey theory and set theory, but introduces them in an uncomplicated manner.
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 Inverse of a Function  Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about the inverse of a function, how it is used in real life, whether or not the inverse of a function is itself a function,
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 Investigating Linear Relationships: The Regression Line and Correlation (iMath Investigations)  Illuminations; National Council of Teachers of Mathematics (NCTM)
An online, interactive, multimedia math investigation. Interactive computerbased tools allow students the opportunity to manipulate numbers easily and investigate the relationships between data points and sets. This iMath Investigation uses an interactive
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 IXL Learning
IXL provides free online practice, organized by grade levels K8 and aligned to state standards. Choose one math skill from among the hundreds offered, and submit your answer. Respond incorrectly, and click on the "explanation" button to learn more; get
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 Java tFunction  Raymond Berthou
A simple functiondrawing applet. The page contains a description, HTML source, parameters, functions and warnings, history, and examples and samples, as well as the downloadable applet itself. Explanations in English and French.
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 JRPN: a PopUp Scientific Calculator  Bill Giel
A 35function virtual scientific calculator that uses Reverse Polish Notation for data entry, making it easy to perform chained calculations. It also features continuous (filebased) "memory" and 10 persistent storage registers. Styled to look like a
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 kanakku  Kumaresh Rajan
A JavaScriptpowered spreadsheet that performs arithmetic, trigonometric, statistical, and conversion functions. This free web application lets users cut, copy, and paste cell data; and save files to their desktops as .csv documents. Help video and tutorial
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 Keeping the Functions Straight: Memory Aid (Math to Build on)  Hamilton
Remembering the trigonometric functions sine, cosine, and tangent: Oscar had a heap of apples.
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 Key Aspects of Knowing and Learning the Concept of Function  Annie and John Selden; Mathematical Association of America
Marilyn Carlson and Michael Oehrtman discuss "what is involved in knowing and learning the function concept," including "the reasoning abilities involved in understanding and using functions and the dynamic conceptualizations needed for understanding
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 Learn.co.uk  Guardian Education Interactive Ltd.
Interactive resources for learners to support Great Britian's national curriculum. Selfguided lessons, with glossaries and selfassessments, for key stage 2, key stage 3, or key stage 4 cover numbers; shape, space, and measurement; handling data; algebra,
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 Learning F. C.  Department for Education and Skills (UK)
Learning F.C. is a Key Stage 2 and 3 curriculum resource pack of literacy, numeracy, and Information and Communication Technology (ICT) exercises on the theme of football. It provides a range of soccerrelated curriculum materials for use in study support
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 Learning Math  Annenberg Media
The Annenberg Foundation and the Corporation for Public Broadcasting (CPB) use media and telecommunications to advance excellent teaching in American schools. Video programs with coordinated Web and print materials are offered for the professional development
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 Lessons on Regression at Hessian  Web Feats Workshop II
Use the applet and the geese at Hessian Lake, located in Bear Mountain, New York, to find the line of regression. This workshop was supported by the National Science Foundation through a grant to Duke University for the PostCALC Project and by the The
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 LSL Math Traits  Gary T. Leavens
A guide to an archive of mathematical traits written in the Larch Shared Language (LSL), constituting a small LSL handbook. The traits do not duplicate the traits in Guttag and Horning's book, but add to them. Real numbers; Polynomial Functions and Polynomials;
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 MadCalc  Richard Anton, MadLogic, Inc.
MadCalc is a full featured graphing calculator application for PCs running Windows. MadCalc graphs rectangular, parametric, and polar equations; it also plots multiple equations at once. Change the colors of graphs and the background. Download demos or
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 Magnet/Mathematics Connections: Morse High School  Suzanne Alejandre, for the Math Forum
Morse High School is the Center for Technology and Pacific Rim Studies. The school magnet focuses on five career paths designed to provide a multifaceted, enriched magnet program: Aeronautics, Engineering, Science, Tourism and Languages. These pages provide
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 Manipula Math with Java  International Education Software (IES)
Hundreds of interactive Java applets for middle school through early college years on subjects such as geometry, calculus, trigonometry, linear transformations, vectors, complex numbers, and conics. Applets and animations often include introductions to
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 Maple Application Center  Waterloo Maple, Inc.
Software you can order to explore, share, and publish math on the Internet. Interactive media for exploring and exchanging mathematical ideas, with content on a variety of subjects at the high school, university, and graduate level. (There are high school
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 A Map to Calculus  Donald Cohen
This clickable flowchart uses student works and sample problems to reveal the connections between graphs, functions, iteration, cookiesharing, solving equations, compound interest, snowflake curves, and geometry as it builds up to infinite sequences,
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 MasterGrapher  Pierre Vermaak
Plot functions of one variable online. Up to ten functions may be displayed at the same time and features include zooming, editing etc. (Use Internet Explorer to see the MasterGrapher button needed to start the program.)
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 Matematicaula  Óscar J. Falcón
Juegos, acertijos de olimpíadas, los Elementos de Euclides con GeoGebra, y otros recursos para números, álgebra, geometría, funciones y gráficas, estadística y probabilidad.
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 Materials for Math Teaching  Antonija Horvatek
Antonija Horvatek, a math teacher in Croatia, offers her Geometer's Sketchpad (.gsp) files and Power Point (.ppt) files that explain: fractions, decimal numbers, integers, rational numbers, equations, functions, perimeter and area, plane transformations,
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 Math Central/Math Centrale  University of Regina, Regina, Saskatchewan, Canada
For K12 math education: a teacher resource room, a bulletin board, a questionandanswer service, and Teacher Talk, an email discussion forum. Teachers are encouraged to send resources and suggestions. Math Central is maintained by faculty and students
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 The Math Dude  Mike DeGraba
Mike DeGraba is the Math Dude, bringing engaging explanations to Algebra I students in this series of videos. The 5 to 7minute episodes are available via Flash on the web, podcast, RSS feed, and if you live in Montgomery County, MD, cable TV. Episodes
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 MathEclipse  Axel Kramer
Evaluate math expressions symbolically or numerically. MathEclipse plots two and threedimensional functions; checks primality; recognizes constants; accepts integers, rational numbers, complex numbers, real numbers, complex real numbers, vectors, matrices,
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 A Mathematical Canvas  Kirby Urner
Urner's statements on his approach to curriculum writing and philosophy of education, as well as articles: "On Programming the Calculator," "Alien Curriculum," and "Python for Homeschoolers @ FreeGeek." Download 4D "Moodles" of courseware such as Geonumeracy
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 Mathematical Constants  Steven Finch, Clay Mathematics Institute Book Fellow
"All numbers are not created equal; that certain constants appear at all and then echo throughout mathematics, in seemingly independent ways, is a source of fascination." Indulge your fascination, or discover a new one in Finch's book. This site provides
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 Mathematics Archives  University of Tennessee, Knoxville (UTK)
A comprehensive site for finding mathematics on the Internet; particularly strong in its collection of educational software and links to other sites of interest to mathematicians that provide access to electronic journals, preprint services, grant information,
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 Mathematics  Centre for Educational Technology (CET), Israel
A research and development center for math education. Includes a list of research papers, many with abstracts; various discussions of the research; and curricula and software. Based in Israel, with Hebrew site available.
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