- Digital Manipulatives: New Toys to Think With - Resnick, Martin, Berg, Borovoy, Colella, Kramer, Silverman; MIT Media Laboratory
Manipulative materials such as Cuisenaire Rods and Pattern Blocks enable children to explore mathematical and scientific concepts such as number and shape through direct manipulation of physical objects. Resnick et al. have developed a new generation
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- Dipping math scores heat up debate over math teaching... - Bridget Murray, American Psychological Association (APA) Monitor
... psychologists differ over the merits of teaching children 'whole math'. An APA newsletter article that outlines the debate over the effectiveness of whole math, a demonstrative approach where manipulatives help children understand math concepts. "Some
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- Disabilities and Math Anxiety - Math Forum, Teacher2Teacher FAQ
Answers to a frequently asked question: How can I help my child who has a physical or learning disability?
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- Discover Magazine - The Walt Disney Company
The monthly magazine of science and technology. Covers space, biology, health, medicine, AIDS, computers, new technology, the environment, astronomy, ancient life, archeology, evolution, physics, mathematics, ecology, and more. Available online: selected
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- Discussing Undergraduate Mathematics Education on the Internet - Steve Weimar for MAA Online; The Math Forum
Descriptions of good math discussion groups: what kinds of conversations you will find, how to access them, etc. Teaching and learning mathematics: MATHEDU, AMTE, MATHEDCC, DEVELOPMENTAL MATH. Topic-specific lists: MATH-HISTORY-LIST, AP-CALC, AP-STAT,
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- Discussions - Math Forum
The Math Forum's discussions include mathematics and math education-related newsgroups, mailing lists, and Web-based discussions. Read recent and older messages, find out how to subscribe to a mailing list that interests you, read an MAA Online article
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- Distance Calculator Between Cities - Dan Gallagher
Enter two cities or countries and this CGI illustrates them on a scaled political map, calculates the distance between the two locations in miles and kilometers, and provides information about latitude, longitude, bearing, and airports. All latitude and
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- Dividing 12-foot Boards - NASA Lewis Learning Technologies Project
Lewis needs 1,500 boards to build a small rocket. Each board must be 3 feet long. If boards are sold in 12 foot lengths, how many boards must Lewis buy and cut into 3 foot pieces to get the 1,500 he needs? A detailed answer is provided. From NASA's 9th
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- Dividing Decimals - Math Forum, Ask Dr. Math Common Question
A selection of answers to questions about dividing decimals, including how to divide decimals with a remainder.
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- Dividing Decimals - NASA Lewis Learning Technologies Project
Dividing decimals: What is 12.8 divided by .04? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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- Dividing: Fractions and Mixed Numbers - NASA Lewis Learning Technologies Project
What is 1 1/2 divided by 1/2? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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- Dividing Fractions - Math Forum, Ask Dr. Math FAQ
How do you divide fractions? Say, 2/3 divided by 3/4.
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- Divisibility Rules - Calculation Tips & Tricks, The Math Forum
Tips for figuring out whether a number can be divided by the numbers 3-13, with a Spanish translation and an explanation of why the rules work by Robert L. Ward.
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- Divisibility Rules - Math Forum, Ask Dr. Math FAQ
How can you tell whether a number is divisible by another number (leaving no remainder) without actually doing the division? Why do 'divisibility rules' work?
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- Divisibility Rules to 50 and Beyond - Stephen D.T. Froggatt; Math Forum, Ask Dr. Math FAQ
A quick way of testing primality of larger numbers: the idea of deleting the last digit and adding or subtracting a multiple of the digit from the remaining number can be generalized to test for divisibility by prime numbers up to 50 and beyond.
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- Divisibility War - Diane Reed
A game designed for secondary level students studying basic mathematics to use the divisibility tests to determine whether a number is divisible by 2, 3, 4, 5, 6, 9, and 10.
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- DLK MathsWork Software
Self-differentiating, topic-specific math software for Windows 3.1 and above, on number, shape and space, and data handling. All of the practice modules have on screen monitoring at three levels. Six problem modules designed to improve users' application
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- The Doctor X Amazing Griddable Multiplication Contraption - Gordon Anderson
Click a color from the left of this 10×10 JavaScript array, then paint the grey boxes with it to illustrate how rectangular area, multiplication, and the distributive property interrelate. As products color the grid, the column on the left dynamically
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- DO MATH...and you can do anything! - National Council of Teachers of Mathematics (NCTM)
Features grade level-specific mathematical activities that children can do with their families and on their own, as well as links to other sites where children can explore the connections between math and some possible career paths. Also includes a family
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- Dominoes Activity - Suzanne Alejandre
A classroom activity (similar to Pentomino + 1 = Hexomino; a variation on polyominoes) aligned to the NCTM and California Standards, to be explored through manipulatives (paper dominoes). Students explore whether it is possible to cover a 6x5 grid with
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- Double Division - Jeff Wilson
Double Division is a method for doing manual division that reinforces the principles of division and gives students success with a less frustrating alternative. The online calculator shows and explains each step. Feedback from teachers who've used the
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- Doubling Pennies - Math Forum, a Classic Problem from the Ask Dr. Math FAQ
Which is more, a million dollars or a penny doubled every day?
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- Downloads - Mac - Mathematics - CNET Download.com
Search this site to find a particular piece of software for the Mac, or browse their mathematics listings.
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- Downloads - PC - Mathematics - CNET Download.com
Search this site to find a particular piece of software for the PC, or browse their mathematics listings.
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- A Dozen Reasons Why Schools Should Avoid Filtering - From Now On (FNO)
Why schools should not block access to particular sites: filters may not work very well;. they may work too well; they may increase attention to SMUT and spur motivation; their ongoing cost may block better programs from your students; they may create
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- Dragonfly Web Pages - Miami Univ. of Ohio with the NSTA
Dragonfly is an inquiry-driven magazine published bimonthly during the school year, inspiring children to join with their peers and with scientists in national and international investigations. Dragonfly also publishes poetry, autobiographies, natural
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- Dramatic Results
This non-profit educational arts agency improves students' academic confidence and performance "by stimulating curiosity and fostering creativity through a hands-on, arts-based approach to learning." Dramatic Results specializes in curriculum that integrates
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- DreamCalc for Windows - Andy Thomas
A freeware scientific calculator for Windows, intended to replace standard hand-held calculators. Fully featured range of math, scientific, statistical & financial functions. Supports natural fractions, complex numbers, base-n logic, unit conversions
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- Dr. Freemath - Bob Pawloski, Office of Internet Studies, University of Nebraska - Omaha
Archives of a project where elementary classes asked mathematics questions of the Omaha Free-Net, Project TEAM Internet (UNO), and the Technology Task Force of the Eastern Region Math and Science Coalition. Questions and answers range from "At the speed
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- Dyscalculator - Pind, Pernille; and Bjerre, Erik
A calculator app to help dyscalculics by showing quantities in multiple representations: as digits, as words, and (for comparisons) graphically. Dyscalculator also speaks figures aloud and rounds numbers. Developed for iPhone, iPad, and Android with the
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- Dyscalculia.org - R. M. Newman
Learn about dyscalculia: definitions, cognitive research, symptoms, diagnosis and best practices, classroom techniques, home learning aids, legal questions, papers such as "Developmental Perspectives on Dyscalculia: Implications for Teaching in the Middle
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- Dyslexia - George Row
A compensium of links to other WWW pages and discussion groups on Dyslexia: basics, organizations, bibliographies, archives, software, research; also special needs education in general; and pointers to general disability information.
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- Dyslexia Online
An online magazine offering information on and resources for dyslexia.
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- Dyslexia Symptoms & Dyslexia Signs - Benetta Strydom
A resource on the symptoms of dyslexia, including the possible effects of
this disorder on math and handwriting.
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- Eagle Geocoding - ETAK, The Digital Map Company
Input an address and the Eagle Geocoder will return the following data: full Zip Code, latitude and longitude, County, Urbanized Area Code, Population Density, Minor Civil Division, Place, Tract, and BlockGroup. You may also request a map with the address
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- Earliest Known Uses of Some of the Words of Mathematics - Jeff Miller, Gulf High School, New Port Richey, FL
An extensive list, with examples, sources, and contributors. These pages attempt to show the first uses of various words used in mathematics. Research is ongoing, and the uses cited should not be assumed to be the first uses that occurred unless it is
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- Earliest Uses of Various Mathematical Symbols - Jeff Miller, Gulf High School, New Port Richey, FL
An attempt to identify the individuals who introduced various common mathematical symbols, along with the dates and name of the document in which the symbol first appeared: symbols of operation; grouping symbols; symbols of relation; fractions and decimals;
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- Early Algebra, Early Arithmetic - TERC and Tufts University
The Early Algebra Project examines young learners as they express general relationships among numbers and quantities through written notation, tables, and diagrams. Download PDFs of class materials such as lesson plans and student worksheets; discuss
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- Earning 5.5 Percent Interest - NASA Lewis Learning Technologies Project
Mareta put $4,000.00 in a savings account at an annual interest rate of 5.5%. How much interest will the principal earn in 1 year? A detailed answer is provided. From NASA's 9th Grade Math Proficiency Test.
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- EASI Street to Science, Engineering, and Math (SEM)
Equal access to software and information: an NSF-sponsored project to collect and disseminate information on tools that make these fields more accessible to professionals with disabilities. Online workshops, Webcasts, links to programs for the visually
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- EcEdWeb: Economic Education - Kim Sosin, Univ. of Nebraska at Omaha (UNO)
Teaching resources for economics teachers from K-12 to college/university level, plus links to particularly useful sites for economics information and data for teachers and students. Two economics organizations, the National Association of Economic Educators
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- EconEdLink - National Council on Economic Education
Classroom-tested, Internet-based economic lesson materials for K-12 teachers and their students. Browse the complete library of online lessons, aligned to Standards of the National Council on Economic Education (NCEE) and organized into macroeconomics
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- EdAlive Educational Software
Educational games and teaching utilities, for Windows or Mac operating systems. Australia-based company.
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- EDC WEST.com Every Day Counts Workshops - Janet Gillespie
Every Day Counts is a form of Calendar Math that provides 10-15 minutes of
daily supplemental math instruction at each grade. EDC West consultants provide math staff development for Every Day Counts calendar math and partner game materials for K-6 schools,
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- edin.us - Edin
Makers of the arithmetic apps Digitron, which challenges players to form true equations out of numbers and operators as they tumble down the screen, in the style of Tetris; and Math Samurai, which challenges players to identify the missing operation in
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- EdNext
A utility that allows searches defined by grade level, subject, and specific topic. Select subject: mathematics to search for more than 8,000 math sites.
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- EdPlace Maths - EdPlace
EdPlace Maths is a is a registered Curriculum Online subscription website that offers over 2000 interactive and printable maths worksheets for KS1 through KS4. Free samples available; paid subscriptions allow users to generate new problems for each worksheet
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- eDscape - Computer Curriculum Corporation (CCCnet)
eDscape is CCC's professional development website for educators, with free online courses on using the Web and technology in the classroom, discussions and conferences, partner sites, and online stores (Simon & Schuster). You must register to participate
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- Ed's Oasis - AT&:T Learning Network
A resource-collecting, teaching-strategy-sharing, community-building site, including discussions via e-mail and the Web, spotlights on various teachers for technology-integrating ideas and projects, a "treasure zone" for students with resources in language
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- Ed Tech Tools - University of Hawaii
Free, web-based tools for educators, featuring QuizMaker 2.0, which allows users to create and correct on-line quizzes easily and quickly, without any knowledge of HTML. It provides instant feedback to students, and/or package answers in an email that
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